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Husqvarna Ab patents


Recent patent applications related to Husqvarna Ab. Husqvarna Ab is listed as an Agent/Assignee. Note: Husqvarna Ab may have other listings under different names/spellings. We're not affiliated with Husqvarna Ab, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Husqvarna Ab-related inventors


Blower with improved sound reduction

A blower (100) may include a housing (110), a motor (120), a fan assembly (170) and an inlet assembly (160). The housing (110) may include a handle (140) operably coupled thereto. ... Husqvarna Ab

Walk behind lawn mower with a collector dump assembly

A lawn mower may include a blade housing configured to house at least one blade, an engine operably coupled to the blade housing and configured to selectively rotate the at least one blade, a handle bracket assembly operably coupled to the blade housing, a handle assembly operably coupled to the handle bracket assembly, a door operably pivot about a first pivot axis and a collector operably coupled to the handle bracket assembly and configured to coupled to the handle bracket assembly and configured to pivot about a second pivot axis between a first position and a second position. In the first position, the collector is configured to receive clippings generated responsive to operation of the at least one blade. ... Husqvarna Ab

Outdoor power equipment tool

A mower may be specifically recommended for a user based on received data associated with a yard of the user. The method may include providing a computing device for a user, and receiving, using the computing device communicating with a computer over a network, particular parameters about the user's yard. ... Husqvarna Ab

Robotic vehicle with adjustable operating area

A robotic vehicle may include one or more functional components configured to execute a lawn care function, a sensor network comprising one or more sensors configured to detect conditions proximate to the robotic vehicle, a positioning module configured to determine robotic vehicle position while the robotic vehicle traverses a parcel, and a boundary management module configured to enable the robotic vehicle to be operated within a bounded area. The bounded area may include a variable boundary, and the boundary management module may be configured to receive instructions from an operator to adjust the variable boundary.. ... Husqvarna Ab

Error detection and resetting of a robotic work tool

A method of controlling a mobile communication device comprising a wireless communication interface and a display is disclosed. The method comprising: executing a mobile application for controlling a robotic work tool; receiving an error signal through said wireless communication interface from said robotic work tool; displaying an error status on the display; disabling functions relating to an operating state; receiving a reset signal through said wireless communication interface from said robotic work tool; and in response thereto enabling the functions relating to an operating state.. ... Husqvarna Ab

Quick loading trimmer head and trimmer thereto

A hand-held cutting device (10) including an elongated member (45), a trimmer head (25), and a power unit operably coupled to the trimmer head (25) to selectively cause rotation of the trimmer head (25). The trimmer head (25) includes a line holding assembly (110, 310) to hold and selectively release trimmer line (70), and a housing to house the line holding assembly (110, 310), wherein the line holding assembly (110, 310) includes a core (140, 340), a line-release knob (160, 350), and a spool (130) configured to hold the trimmer line (70). ... Husqvarna Ab

Dual direction trimmer with self detection capability

A method of controlling operation of a hand held power tool may include receiving information indicative of a type of cutting equipment attached to the hand held power tool (100) based on operation of a working assembly (130) in a selected direction of rotation. The working assembly (130) may be configured to be bi-directionally rotatable to perform a cutting function using cutting equipment attachable to the hand held power tool (100). ... Husqvarna Ab

Improved lift/collison detection

A robotic work tool system (200) comprising a robotic work tool (100) comprising a lift/collision detection sensor (190), said lift/collision detection sensor (190) comprising a polarity element (191) and at least a first sensing element (192′) and a second sensing element (192″), wherein the polarity element (191) has a first and a second polarity and wherein the first and second sensing elements are configured to each sense a polarity of the first polarity element (191). The robotic work tool (100) is configured to detect a polarity change in the first sensing element (192′) and in the second sensing element (192″) and in response thereto determine that a lift has been detected, or detect a polarity change in the first sensing element (192′) but not in the second sensing element (192″) and in response thereto determine that a collision has been detected.. ... Husqvarna Ab

Improved impact resistance for a robotic working tool

A tool (802) adapted to be carried by a tool holder (160) provided in a robotic work tool (100), the tool (802) comprising a slit (801; 901) arranged to receive a pin (804) for attaching said tool (802) to said tool holder (160), wherein said tool (802) is movable such that the pin (804) may be displaced within the slit (801; 901) and wherein the slit is symmetrically located within the tool (802) with respect to at least one of the length and the width of the tool.. . ... Husqvarna Ab

Multi-sensor, autonomous robotic vehicle with lawn care function

A robotic vehicle may include one or more functional components configured to execute a lawn care function, a sensor network comprising one or more sensors configured to detect conditions proximate to the robotic vehicle, an object detection module configured to 5 detect objects proximate to the robotic vehicle using contact-less detection, a positioning module configured to determine robotic vehicle position, and a mapping module configured to generate map data regarding a parcel on which the robotic vehicle operates.. . ... Husqvarna Ab

Visible motor saw head layout

A housing assembly (26) for a working assembly (10) of an outdoor power device (20) may include a first, second, and third housing portion. The second and third housing portions may be operably coupled to the first housing portion to at least partially enclose a motor housing (60), which may comprise a body portion (62), a top endplate (64), and a bottom endplate (66) to house an electric motor for driving the working assembly (10). ... Husqvarna Ab

Simplified interface and operation in a watering system

A user terminal may be configured to communicate with a gateway. The gateway may be configured to communicate with sensor equipment including one or more sensors and watering equipment via a first network. ... Husqvarna Ab

Two-stroke internal combustion engine

An internal combustion engine (10), including a cylinder (15) with a cylinder wall (12) defining a combustion chamber (32), a piston (13) reciprocally disposed within the combustion chamber (32) a crankcase (16) including a crankshaft (11) rotatably disposed therein, the piston (13) being connected to the crankshaft (11) by a connecting rod (17), a first scavenger duct (3) extending between the combustion chamber (32) and the crankcase (16), the first scavenger duct (3) including a top port (31a) and a bottom port (31b), a fuel and air inlet channel (22) in fluid communication with the crankcase (16) by way of a piston ported fuel and air inlet port (23) so that the fuel and air inlet channel (22) delivers a fuel and air mixture to the crankcase (16), and an airhead channel (6) in fluid communication with the first scavenger duct (3) by way of a first piston ported air inlet port (7), characterized in that the fuel and air inlet channel (22) is in fluid communication with the airhead channel (6) so that the fuel and air mixture is combinable with the air flow from the airhead channel (6).. . ... Husqvarna Ab

Spray head and spraying apparatus

The invention relates to a spray head comprising a spray head base body (2) and a nozzle plate (3), the spray head base body (2) comprising at least one liquid channel (4) for providing a liquid flow towards the nozzle plate (3), wherein a drip-stop element (10) is located between the spray head base body (2) and the nozzle plate (3), said drip-stop element (10) comprising at least one opening (11) being fluidly coupled with said liquid channel (4) for providing a fluid flow into a space (6) between the drip-stop element (10) and the nozzle plate (3), wherein at least a top portion (12) of said drip-stop element (10) is movably mounted within a spray head chamber (5) in order to perform a stroke movement, wherein said top portion (12) is preloaded such that the top portion (12) rests against the nozzle plate (3) without applying any external forces to the top portion (12) and said top portion (12) is lifted off the nozzle plate (3) in case that a liquid flow is provided through the liquid channel (4) into the space (6) between said top portion (12) and the nozzle plate (3).. . ... Husqvarna Ab

03/22/18 / #20180077882

Watering system with adaptive components

A system may include sensor equipment including one or more sensors disposed on a parcel of land, watering equipment disposed on the parcel and configured to selectively apply water to the parcel, and a gateway configured to provide for communication with the sensor equipment and the watering equipment. The gateway may interface between a first network and a second network. ... Husqvarna Ab

03/15/18 / #20180071956

Concrete/masonry cutting device with fast-start design and interlocking reinforcement

A diamond cutting tool (200; 200′) for enabling a fast cutting start may include a rotatable main body (210) and a cutting portion (220). The rotatable main body may include a substantially circular periphery. ... Husqvarna Ab

03/15/18 / #20180071943

Cutting chain for a chainsaw

A cutting chain (300) for a chainsaw (100) may include a plurality of drive links (310) and a plurality of side links (320). The drive links (310) are arranged to lie in a plane parallel to a plane in which a guide bar (120) about which the chain (300) is rotatable lies. ... Husqvarna Ab

03/08/18 / #20180066411

Trench cutting machine

The invention relates to a trench cutting machine (10) for making a cut in a surface (13). The trench cutting machine comprises a frame (12) comprising at least one rear axle (15) and at least one front axle (17); a rotatable circular blade (20) mounted to the frame (12). ... Husqvarna Ab

03/08/18 / #20180065271

Chainsaw chain and/or bar with coatings having specific properties

A cutting chain 200 for a chainsaw 100 may include a plurality of drive links 210, and a plurality of cutter links 240. Each of the drive links 210 includes a top portion and a bottom portion that interfaces with a guide bar 120 of the chainsaw 100. ... Husqvarna Ab

03/08/18 / #20180065270

Chainsaw chain with a defined surface hardness layer on cutter links

A method of modifying a cutter link (240) of cutting chain for a chainsaw may include forming the cutter link (240) to include a base portion (280) and a cutting portion (270) extending away from the base portion (280). The cutting portion (270) may include a side plate (300) and a top plate (310). ... Husqvarna Ab

03/08/18 / #20180065269

Chainsaw chain with diffused carbides in cutter links

A method of modifying a cutter link (240) of cutting chain (200) for a chainsaw (100) may include forming the cutter link (240) to include a base portion (280) and a cutting portion (270) extending away from the base portion (280). The cutting portion (240) may include a side plate (300) and a top plate (310). ... Husqvarna Ab

02/22/18 / #20180050463

Chainsaw guide bar roller bearing seal

A chainsaw (100) includes a power unit and a working assembly powered responsive to operation of the power unit. The working assembly includes a guide bar (120) around which a chain is rotatable. ... Husqvarna Ab

02/15/18 / #20180043567

Chain and bar cassette and chainsaw guide bar with tension indicator

A chainsaw (100) includes a power unit and a working assembly powered responsive to operation of the power unit. The working assembly includes a guide bar (120) around 5 which a chain (210) is rotatable. ... Husqvarna Ab

02/15/18 / #20180043566

Guide bar with internal cavity

A chainsaw (100) includes a power unit and a working assembly powered responsive to operation of the power unit. The working assembly includes a guide bar (120) around which a chain is rotatable. ... Husqvarna Ab

02/15/18 / #20180042184

Arrangement for automatic adjustment of a spacing between cutting blades

The invention relates to an adjustment device for automatic adjustment of a spacing between a first and a second cutting blade (21, 22; 51, 52), the first and second cutting blades being mounted so that the first and second contact surfaces (31, 32) are in contact with and parallel to each other; wherein at least one of the first and second cutting blades (21, 22; 51, 52) is displaceable to produce a cutting action between first and second cutting edges (23, 24). The first and second cutting blades are connected by at least one adjustment device (28; 50; 90) arranged to maintain the spacing between the first and second planar contact surfaces. ... Husqvarna Ab

02/08/18 / #20180038993

Weather collection and aggregation via robotic vehicle

A robotic vehicle may be configured to incorporate multiple sensors to make the robotic vehicle capable of collecting, feeding, and uploading weather data into an aggregation agent to form a geospatial map or weather service. In this regard, in some cases, the robotic vehicle may include an onboard vehicle positioning module and sensor network to give the robotic vehicle a collective understanding of its environment, and enable it to autonomously collect and upload weather data to an aggregation agent for corresponding locations.. ... Husqvarna Ab

02/08/18 / #20180036903

Chainsaw chain with modified cutter links

A method of modifying a cutter link (240) of cutting chain (200) for a chainsaw (100) may include forming the cutter link (240) to include a base portion (280) and a cutting portion (270) extending away from the base portion (280). The cutting portion (270) may include a side plate (300/500) and a top plate (310/510). ... Husqvarna Ab

01/25/18 / #20180020616

Cutting deck flow control assembly

A cutting deck for housing first and second cutting blades rotatable inside a cutting chamber is provided. The cutting deck includes a weldment including a top plate and side plates. ... Husqvarna Ab

01/18/18 / #20180015632

Chain saw

The invention relates to a chain saw comprising a guide bar (1) for guiding a saw chain, wherein the guide bar (1) comprises two side plates (2, 3) between which a sprocket wheel (4) is rotatable arranged, wherein the sprocket wheel (4) is supported in the guide bar (1) by means of a bearing (5) and wherein the bearing (5) is supplied by a lubricant by means of a lubrication system (6). To improve the lubrication of the bearing the invention proposes that the lubrication system (6) comprises a lubrication reservoir (7) which is in fluidic connection (8) with the bearing (5), wherein the lubrication reservoir (7) is sealed against the environment by at least one valve element (9).. ... Husqvarna Ab

01/11/18 / #20180010531

Assembly and method for safe starting of an internal combustion engine

An internal combustion engine for driving a working assembly with a clutch, including a combustion chamber into which a mixture of fuel and air is supplied, a spark plug to ignite the mixture, ignition of the mixture driving a piston operably coupled to a crank portion of the engine, a fuel supply system including a fuel valve and a throttle valve, a throttle position sensor configured to determine a position of the throttle valve, a speed sensor configured to determine engine speed, and an electronic control unit configured to control operation of the fuel valve and the spark plug, the electronic control unit being configured to initiate a speed limitation operation in response to a first position of the throttle valve at engine start-up, wherein the speed limitation operation continues until the throttle valve is moved from its first position.. . ... Husqvarna Ab

12/28/17 / #20170372514

Garden street view

A robotic vehicle may be configured to incorporate multiple sensors to make the robotic vehicle capable of collecting and uploading image data over time into the cloud to generate interactive garden models. In this regard, in some cases, the robotic vehicle may include an onboard vehicle positioning module and sensor network that may work together to give the robotic vehicle a collective understanding of its environment, and enable it to autonomously collect and upload image data for corresponding locations.. ... Husqvarna Ab

12/21/17 / #20170364090

Multi-sensor, autonomous robotic vehicle with mapping capability

A method for recording data from at least one sensor of a robotic vehicle responsive to the robotic vehicle transiting a portion of a parcel and determining a confidence score associated with the recorded data for each of a plurality of potential detection events. The confidence score may correspond to a probability that the recorded data corresponds to an object or feature. ... Husqvarna Ab

12/21/17 / #20170364088

Robotic vehicle learning site boundary

A method for employing learnable boundary positions for bounding operation of a robotic vehicle may include detecting temporary indicia of a boundary on a parcel via at least one sensor of a robotic vehicle, generating coordinate or location based boundary information 5 based on the temporary indicia, and operating the robotic vehicle within the boundary based on the generated coordinate or location based boundary information.. . ... Husqvarna Ab

12/14/17 / #20170357006

Improved navigation for a robotic work tool

A robotic work tool system, comprising a robotic work tool, said robotic work tool comprising a position determining device for determining a current position and at least one deduced reckoning (also known as dead reckoning) navigation sensor, the robotic work tool being configured to determine that a reliable and accurate current position is possible to determine and in response thereto determine an expected navigation parameter, compare the expected navigation parameter to a current navigation parameter to determine a navigation error, determine if the navigation error is negligible, and if the navigation error is not negligible, cause the robotic work tool to change its trajectory to accommodate for the navigation error. Wherein the robotic work tool (100) is further configured to change the trajectory by aligning the trajectory with an expected trajectory, wherein the expected trajectory is determined as an expected direction originating from an expected position and wherein the robotic work tool (100) is configured to change the trajectory by returning to a position that should have been visited and aligning the trajectory with the expected direction originating from the expected position, said position that should have been visited being aligned with the expected direction originating from the expected position.. ... Husqvarna Ab

12/14/17 / #20170354089

Quick loading trimmer head

A hand-held cutting device (10) including an elongated member (45) graspable along a portion thereof by an operator, a trimmer head (25) disposed at one end of the elongated member, and a power unit operably coupled to the trimmer head to selectively cause rotation of the trimmer head, wherein the trimmer head comprises a line holding assembly (110) to hold and selectively release the trimmer line (70) and a housing to house the line holding assembly, wherein the line holding assembly includes a core (340) having a first portion (342) and a second portion (350), and a spool (130) configured to hold trimmer line that is operably coupled to the core, and wherein the second portion of the core is non-rotatably fixed to the first portion of the core when the trimmer head is in an at-rest state, and is rotatable with respect to the first position of the core when the trimmer head is in an in-use state and rotating.. . ... Husqvarna Ab

12/07/17 / #20170350090

Implement coupling device and a machine provided with such a device

The invention relates to an implement coupling device (1) on a working machine (2), which device comprises a coupling means (11) provided with a first shaft (21); an engagement means (12) provided with a second shaft (22) arranged parallel to the first shaft (21); at least one linkage (13, 14) comprising a first portion (23, 24) connected to the first shaft (21) and second portion (25, 26) connected to the second shaft (22), which first and second portions are connected by a pivot joint (27); and a wedge (28) means arranged to be removably mounted between the first and second portions (23, 24; 25, 26), wherein the coupling means (11) and the engagement means (12) are displaceable relative to each other in a direction at right angles to the first and second shafts (21, 22) to attach or release the implement. At least one portion (23, 24; 25, 26) making up a linkage (13, 14) is detachably fixed to its respective shaft (21, 22) by a locking means (31, 32, 33, 34) in a longitudinal recess (41, 42, 43, 44) at right angles to the shaft (21, 22) and engaging with a tangential recess (51, 51′, 51″) in the outer surface of the shaft (21, 22).. ... Husqvarna Ab

12/07/17 / #20170347521

Improved navigation for a robotic lawnmower

A robotic lawnmower (100) for movable operation within a work area (205) has a satellite navigation device (190), a deduced reckoning navigation sensor (195) and a controller (110). The controller causes the robotic lawnmower (100) to movably operate within the work area (205) in a first operating mode, the first operating mode being based on positions determined from satellite signals received by the satellite navigation device (190). ... Husqvarna Ab

11/30/17 / #20170345210

Garden mapping and planning via robotic vehicle

A method for mapping and planning a parcel or garden may include receiving information indicative of position data of a robotic vehicle transiting a parcel and corresponding image data captured by the robotic vehicle at one or more locations on the parcel. The method may further include generating a base-map of the parcel based on the information received and providing a graphical representation of the parcel based on the base-map. ... Husqvarna Ab

11/30/17 / #20170344024

3d map generation by a robotic work tool

A robotic work tool (100) comprising an altitude sensor (185) for providing a current altitude reading (hrl) and a controller (110) configured to receive the current altitude reading (hrl) from the altitude sensor (185); determine an altitude (h) based on the current altitude reading (hrl); determine a current position; and generating a map indicating elevations by including the determined altitude (h) for the current position in the map. A robotic work tool system (200) comprising a robotic work tool (100) and a reference altitude sensor (285) for providing a reference altitude reading (hcs), wherein the robotic work tool (100) is further configured to receive the reference altitude reading (hcs) from the reference altitude sensor (285); and determine the altitude (h) based on the current altitude reading (hrl) and the reference altitude reading (hcs).. ... Husqvarna Ab

11/30/17 / #20170344020

Robotic vehicle grass structure detection

A robotic vehicle may be configured to incorporate multiple sensors to make the robotic vehicle capable of detecting grass by measuring edge data and/or frequency data. In this regard, in some cases, the robotic vehicle may include an onboard positioning module, a detection module, and a mapping module that may work together to give the robotic vehicle a comprehensive understanding of its current location and of the features or objects located in its environment. ... Husqvarna Ab

11/30/17 / #20170344012

Navigation for a robotic working tool

A robotic work tool system (200) comprising a charging station (210) and a robotic work tool (100) configured to work within a work area (205) being divided into at least one section (405), the robotic work tool comprising a controller (110) for controlling the operation of the robotic work tool (100) to cause the robotic work tool to move along a trajectory, the robotic work tool (100) being configured to determine that a section boundary is encountered, and if so change the trajectory of the robotic work tool (100) to cause the robotic work tool to remain in the section.. . ... Husqvarna Ab

11/30/17 / #20170342944

Method for controlling the fuel supply to an internal combustion engine at start-up and a carburettor

The invention concerns a method for controlling the fuel supply to an internal combustion engine at start-up. The fuel supply system can be set in at least two start modes, a lean mode and a rich mode, and the selection of mode is based on an evaluation of a previous start attempt or successful run. ... Husqvarna Ab

11/23/17 / #20170335818

Ignition system with single action start fault correction

A method of enabling operation of an ignition system for outdoor power equipment may include monitoring status of a plurality of switches associated with respective components of the equipment where at least one of the respective components corresponds to one or more binary start fault operators, and setting a start enabling status for the one or more 5 binary start fault operators responsive to actuation of a start fault clearance operator.. . ... Husqvarna Ab

11/23/17 / #20170335763

Adjusting of air-fuel ratio of a two-stroke internal combustion engine

To meet stringent emission standards and improve performance of two-stroke crankcase-scavenged engines, the muffler (13) of the engine is provided with mixing means (130, 31) for mixing the exhaust gases (42) resulting from the mixture participating in combustion and gases resulting from scavenging, so that a substantially homogenous gaseous mixture is formed within the muffler (13), and means (81) for sensing oxygen concentration is located in the homogeneous gaseous mixture and are configured to provide an output value to a control unit (80) for controlling supply of fuel to the engine and thereby the air-fuel ratio in the combustion chamber (41). The muffler (13) suitably is provided with a catalytic element (140), preferably a three-way catalyst. ... Husqvarna Ab

11/23/17 / #20170334005

Transmission belt adjustment for a power cutter

The present invention relates to a portable power tool (1) arranged for driving a rotatable cutting tool (2). The power tool (1) comprises a motor (5) and a transmission part (4) that is arranged to transfer power from the motor (5) to a tool holder (10), and comprises a first arm part (11; 11′) and a second arm part (12; 12′). ... Husqvarna Ab

11/09/17 / #20170320215

Remote interaction with a robotic vehicle

A method of providing remote control of a robotic vehicle may include receiving an instruction directing setup of a connection for communication between a robotic vehicle and an electronic device configurable to interface with the robotic vehicle remotely, providing a pairing code to one of the robotic vehicle or the electronic device for display of the pairing code at the one of the robotic vehicle or the electronic device, receiving an indication of entry of the pairing code at the other of the robotic vehicle or the initiate pairing electronic device, establishing a communication link for operably coupling the robotic vehicle and the electronic device responsive to receipt of the indication, and enabling an operator to remotely interact with the robotic vehicle at the electronic device via the communication link.. . ... Husqvarna Ab

10/26/17 / #20170304914

High power flat saw with blade shaft drive

High power flat saw (10) having a large diameter saw blade (12), said flat saw (10) comprising a motor (11) and a blade shaft drive (1), wherein said blade shaft drive (1) comprises a first pulley (2) and a second pulley (3) and a belt (6), said second pulley (3) being directly connected to a blade shaft (9), said first pulley (2) having a smaller diameter than the diameter of said second pulley (3), and wherein said blade shaft drive (1) further comprises a variable belt tensioner (4) arranged to apply a variable force to the belt (6).. . ... Husqvarna Ab

10/26/17 / #20170303466

Robotic vehicle with automatic camera calibration capability

A method for employing sensors of a robotic vehicle may include capturing a current image of a reference marker via a camera disposed on a robotic vehicle and comparing at least one property of the reference marker in the current image to a corresponding known 5 property. The method may further include determining a current lighting condition classification based on a result of the comparing, and making at least one adjustment to a sensor of a sensor network of the robotic vehicle based on the current lighting condition classification.. ... Husqvarna Ab

09/21/17 / #20170265393

Fruit collector, retaining bracket and collecting container

The present application in particular is directed to fruit collector (1) comprising a retaining bracket (3) and a collecting container (4) that is pivotably associated with the retaining bracket, wherein the retaining bracket comprises a hub (9) arranged to pivotably retain a stub axle section (12) of the collecting container projecting from an axial end of the collecting container.. . ... Husqvarna Ab

09/14/17 / #20170263151

Teaching mode for construction devices

A construction site status monitoring device is provided including processing circuitry configured to receive teaching data from a construction device in a teaching mode based on an operator performing an operation with the construction device and generate an operation profile based on the teaching data for execution by one or more construction devices. The operation profile defines parameters associated with the operation to enable one or more construction devices to repeat the operation in an operate mode.. ... Husqvarna Ab

09/14/17 / #20170262947

Device for determining a nearby construction device availability

A construction site status monitoring device comprising processing circuitry configured to generate a construction device availability request including an indicator of a device type, in response to an initiating event including an indicator of a device type, and receive a construction device availability response including location data and status information of at least one available construction device of the device type based on the construction device availability request.. . ... Husqvarna Ab

09/07/17 / #20170256006

Construction site battery network

A construction site status monitoring device is provided including processing circuitry configured to receive a battery identifier data associated with respective construction device batteries of a plurality of construction device batteries, receive location data associated with the respective construction device batteries of the plurality of construction device batteries, and determine a substitute battery from the plurality of construction device batteries for a construction device battery of the plurality of construction device batteries based on the battery identifier data or the location data.. . ... Husqvarna Ab

09/07/17 / #20170256005

Device for scouting a construction site for construction device deployment

A construction site status monitoring device is provided including processing circuitry configured to receive sensor data associated with a construction site from a scout device and generate a site map based on the sensor data for deployment of the construction device.. . ... Husqvarna Ab

09/07/17 / #20170255193

Device for determining construction device and worker position

A construction site status monitoring device is provided including processing circuitry configured to receive construction device location data associated with a construction device, receive worker location data associated with a worker, and determine a safety condition based on the construction device location data and the worker location data.. . ... Husqvarna Ab

08/31/17 / #20170251060

Distributed intelligent grounds management system

A system may include sensor equipment, a local yard maintenance manager and a remote yard maintenance manager. The sensor equipment includes one or more sensors disposed on a parcel of land. ... Husqvarna Ab

08/31/17 / #20170247052

Walk behind power equipment with zero turn capability

A drive assembly (140) for a walk-behind, powered device operably couples an engine (110) of the powered device to a mobility assembly (120) to provide mobility of the powered device responsive at least in part to operation of the engine (110). The drive assembly (140) includes a transmission shaft and a mechanical power reversing assembly (150). ... Husqvarna Ab

08/24/17 / #20170238779

Floor surfacing machine

The present invention relates to a floor surfacing machine (1) comprising a frame (2) that is carried by a first wheel (3) and a second wheel (4). The floor surfacing machine (1) further comprises a first motor (6), a handle arrangement (7), at least one planetary head (15) that is rotatably mounted to the frame (2) and at least one satellite surfacing head (19, 20, 21) that is rotatably mounted to the planetary head (15), where the first motor (6) is arranged to propel the planetary head (15). ... Husqvarna Ab

08/10/17 / #20170225569

Indicator system for outdoor power equipment

An indicator system for outdoor power equipment, such as a riding lawn mower, may include an illuminating element around the perimeter of a display screen. The illuminating element may be configured to illuminate in a predetermined manner based on a predefined condition occurring in order to alert the operator to the display screen. ... Husqvarna Ab

08/10/17 / #20170225358

Cutting and dust or slurry collecting assembly and working machine

A cutting and dust or slurry collecting assembly that comprises: a) a circular saw blade (4) b) a blade guard (5) c) a cover device (6), and the cover device (6) has a front end (31), a rear end (32), a top surface (34), a bottom surface (36), elongated sidewalls (35), and a longitudinal passage (45,46) for the saw blade, d) the blade guard (5) and the cover device (6) being pivotally connected or connectable to one another via a hinge (40) in or adjacent to a lower rear corner of the blade guard (5), such that the cover device and the blade guard can be turned in relation to each other, e) a discharge member (52) is provided at the rear of said hinge and has an outlet (58) which can be connected to a vacuum source, f) a connection member (12) connects the discharge member (52) with at least one of the longitudinal passage (45, 46) and the cut created rear of the longitudinal passage, g) that the direction of rotation of the saw blade (4) is such that a circumferential part of the blade which has passed beyond the bottom surface of the cover device will move in a direction upwards-rearward towards the bottom surface in particular a rear arm distance (lr) between the hinge (40) and the rear end (32) is bigger than 0.2r and preferably bigger than 0.25r, thereby enabling a turning of the cover device (6) by pressing the rear end (32) towards the structure to be cut.. . ... Husqvarna Ab

08/03/17 / #20170216941

Electric cutting system

An electric power saw/cutter includes a rotatable saw structure, a rear handle with a switch/speed control, a front handle, and a drive unit for rotating the saw structure. The drive unit includes a saw structure drive arrangement to which the saw structure is attachable, a transmission for driving the saw drive arrangement, an electric motor for driving an input shaft of the transmission, and a support structure for holding/carrying the saw structure drive arrangement. ... Husqvarna Ab

07/06/17 / #20170188511

All wheel drive, walk behind mower

A drive system includes a first transmission, a second transmission and at least one flexible driving member. The first transmission is operably coupled to a first set of wheels to provide drive power to the first set of wheels responsive to engagement of the first transmission. ... Husqvarna Ab

06/29/17 / #20170182677

Tile or masonry saw assembly with improved blade wetting capability

A tile or masonry saw assembly may include a saw and a frame. The saw includes a motor operable to turn a blade of a blade assembly to cut a workpiece. ... Husqvarna Ab

06/22/17 / #20170179742

Power adapter for cordless power tools

The present application is directed in particular to a power adapter, adapted to be connected on the one hand to a power interface of a cordless power tool and adapted to be connected on the other hand to an energy source, in particular mobile energy source, for electrically power the power tool via the power adapter.. . ... Husqvarna Ab

06/22/17 / #20170173823

Tile or masonry saw assembly with double movement

A tile or masonry saw assembly may include a saw, a frame, and a workpiece support. The saw includes a motor operable to turn a blade assembly to cut a workpiece. ... Husqvarna Ab

06/15/17 / #20170168499

Obstacle detection for a robotic working tool

A robotic work tool system (200) comprising a robotic work tool (100) comprising a collision detection sensor (190), said collision detection sensor (190) comprising a first sensor element (191) and a plurality of second sensor elements (192), wherein said first sensor element (191) is movably arranged with respect to said plurality of second sensor elements (192), wherein said robotic work tool (100) is configured to detect that said first sensor element (191) is proximate a peripheral second sensor element (192) and in response thereto determine that a collision has been detected, and detect that said first sensor element (191) is not proximate any peripheral second sensor element (192) and in response thereto determine that a lift has been detected.. . ... Husqvarna Ab

06/01/17 / #20170153648

Robotic working tool system with a boundary wire

A robotic work tool system (200) comprising a signal generator (240), a boundary wire (250) and a robotic work tool (100), said boundary wire being adapted to demark a work area (205), said signal generator (240) being arranged to transmit a control signal (255) through said boundary wire (250), and said robotic work tool (100) comprising at least one sensor (170) for detecting said control signal (255) being transmitted through the boundary wire (250). The robotic work tool system (200) is characterized in that said pulse signal (255) comprises at least one first pulse train (256) being transmitted at a first amplitude (c1) and at least one second pulse train (257) being transmitted at a second amplitude (c2), wherein said first amplitude (c1) and second amplitude (c2) being arranged so that said first amplitude (c1) is greater than said amplitude level (c2) and a sum of the amplitudes (c1, c2) for all pulse trains (256, 257) over time falls below a threshold value.. ... Husqvarna Ab

05/18/17 / #20170139419

Improved robotic working tool

A robotic work tool system (200) comprising a charging station (210) and a robotic work tool (100), said robotic work tool (100) comprising a position determining device (190) and a controller (210), wherein said controller (210) is configured to determine a current position for the robotic work tool (100) based on the position determining device (190), determine a first distance from the current position to said charging station (210), cause said robotic work tool (100) to travel a predetermined distance or for a predetermined time, determine a new current position for the robotic work tool (100) based on the position determining device (190), determine a second distance from the new current position to said charging station (210), determine if the second distance is larger than the first distance; and if so, cause the robotic work tool (100) to turn towards the charging station (210).. . ... Husqvarna Ab

05/11/17 / #20170129297

Improved robotic working tool

A robotic work tool system (200) comprising a robotic work tool (100), said robotic work tool (100) comprising two front wheels (130) and a chassis (140), wherein said robotic work tool is characterized in that the two front wheels (130) are arranged on a beam axle (145) being pivotably arranged to the chassis (140).. . ... Husqvarna Ab

05/11/17 / #20170127607

Garden visualization and mapping via robotic vehicle

A method for creating a visualization of a parcel or garden may include receiving information indicative of position data of a robotic vehicle transiting a parcel and corresponding image data captured by the robotic vehicle at one or more locations on the parcel. The method may further include generating a model of the parcel based on the information received, providing a graphical representation of the parcel based on the model, and enabling an operator to interact with the graphical representation to view one or more content items associated with respective ones of the one or more locations.. ... Husqvarna Ab

05/04/17 / #20170126152

Failsafe hardware brake mechanism for outdoor power equipment

An apparatus (100) may include a working assembly (220) configured to perform a work function responsive to operation of the working assembly, an electric motor (230) that powers the working assembly, a power source (210) configured to selectively power the electric motor, a control circuitry (240) for controlling operation of the electric motor, and a brake function (270) configured to selectively apply braking to the electric motor responsive to a brake initiation event. The brake function may be configured to apply the braking by short-circuiting motor phase windings of the electric motor without requiring an external power supply during application of the braking.. ... Husqvarna Ab

05/04/17 / #20170120445

Navigation for a robotic working tool

A robotic work tool system, comprising a robotic work tool, said robotic work tool comprising a controller being configured to cause said robotic work tool to operate in a first operating mode, which first operating mode is based on a current position, said current position being determined based on signals received from a position determining device, such as global navigation satellite system device; determine that said received signals are not reliable, and in response thereto cause said robotic work tool to operate according to second operating mode, which second operating mode is not based on a current position being determined based on said received signals.. . ... Husqvarna Ab

05/04/17 / #20170120354

An improved wall or floor saw

The present invention relates to a wall or floor chain sawing device (1), comprising a chain bar assembly (37) which in turn comprises a chain bar (2) having a longitudinal extension (17) and guiding a chain (3) at least partly around its perimeter. The chain bar assembly (37) further comprises a chain bar housing (6) that is attached to, and partially covers, the chain bar (2) and the chain (3). ... Husqvarna Ab

04/13/17 / #20170099767

Electrical system for riding lawn care vehicle

A riding lawn mower is provided with an electrical system. The electrical system includes a control module, transceiver modules, and a wiring system. ... Husqvarna Ab

03/30/17 / #20170089349

Blower with cruise control and boost function

A blower may (100) include a power unit and fan assembly powered by the power unit, a stepless trigger (146), control circuitry configured to at least partially control application of power to drive the fan assembly based on a position of the stepless trigger (146), and one or more buttons. The fan assembly may rotate at a speed proportional to the position of the stepless trigger (146) in a first mode of operation. ... Husqvarna Ab

03/30/17 / #20170086376

Lawn care vehicle brake system

A riding lawn care vehicle (10) may include a frame (60), a steering assembly (30), a brake assembly (110), and a mechanical brake linkage assembly (120). At least a first drive wheel and a second drive wheel (32) of the riding lawn care vehicle may be attachable to the frame. ... Husqvarna Ab

03/30/17 / #20170086369

Balanced trim shield with a single, dual direction line cutting member

A hand-held cutting device (10) may include an elongated member (45) graspable along a portion thereof by an operator, a trimmer head (25) disposed at one end of the elongated member (45) and configured to be rotatable to perform a cutting function using trimmer line (70) held at a portion of the trimmer head (25), a power unit operably coupled to the trimmer head (25) to selectively cause rotation of the trimmer head, and a trim shield (65) disposed to extend away from the elongate member (45) to a position radially outward relative to the trimmer head (25) proximate to at least a portion of a path traced by a distal end of the trimmer line (70) eilligill when the trimmer head is rotated. The trim shield (65) may include a first housing portion (100) disposed on one side of a t longitudinal centerline (120) of the device, a second housing portion (110) disposed on an opposite side of the longitudinal centerline (120) and substantially symmetrical relative to the first housing portion, a cutter mount (130) and a cutter member (140). ... Husqvarna Ab

03/23/17 / #20170080506

Improved power tool

A power tool (100), such as a chainsaw, comprising means (230) for driving said power tool (100) and a controller (210). The power tool comprises a movement sensor (220) and the controller (210) is configured to receive a signal from said movement sensor (220), determine if said signal is a signal indicating a movement, determine a time wherein no signal indicating a movement is received, determine if said time exceeds a time period, and if so, disable said driving means (230).. ... Husqvarna Ab

03/23/17 / #20170079201

Modular robotic vehicle

A robotic vehicle may include a power module and a working module. The power module may include control circuitry configured to execute stored instructions to direct operation of the robotic vehicle on a defmed area, and a drive motor for propelling the robotic vehicle responsive to control by the control circuitry. ... Husqvarna Ab

03/02/17 / #20170057042

Floor grinding machine

A grinding or polishing machine (10) may include a working assembly (20) and a foldable cart (30). The working assembly (20) may include a grinding head (26) rotatable to engage a surface for grinding or polishing. ... Husqvarna Ab

02/23/17 / #20170051873

Throttle lockout with dissimilar action

A hand-held power tool (100) may include an electric power source (110), an electric motor (120) selectively coupled to the electric power source (110), a working assembly (130) operably coupled to the electric motor (120) to perform a working function responsive to actuation of the electric motor (120), and a control assembly (140) operably coupled to the electric motor (120) to provide selective control over actuation of the electric motor (120). The control assembly (140) may be configured to provide the selective control based on performance of at least two dissimilar operator actions. ... Husqvarna Ab

02/16/17 / #20170045058

Noise reduction system for a blower

A blower may include a housing, a motor, a fan assembly and an aperture array. The housing may include a handle portion, a top wall and a bottom wall. ... Husqvarna Ab

02/16/17 / #20170042096

Blower comprising an eyelet

A blower (100) may include a housing (110), a blower tube (150), a fan assembly (160) and an eyelet (190). The housing (110) may include a handle portion (144) defining a handle aperture (145). ... Husqvarna Ab

02/16/17 / #20170042087

Robotic work tool

A robotic work tool system (200) is provided. The system comprises a robotic work tool (100), and said robotic work tool (100) comprises a stationary hub (310) and a rotatable shaft (162) being supported by the hub (310). ... Husqvarna Ab

02/02/17 / #20170031368

Navigation for a robotic working tool

A robotic work tool system (200) comprising a charging station (210) and a robotic work tool (100), said robotic work tool (100) comprising a position determining device (190) for determining a current position, the robotic work tool (100) being configured to determine that reliable navigation through said position determining device (190) is no longer possible, such as when satellite signal reception is not possible, at a time point (t1) and position and in response thereto generate an obstacle map which gives information on the position of at least one obstacle (260), determine when an area will be shadowed with regards to satellite reception based on said obstacle map, and to schedule operation of the robotic work tool (100) accordingly.. . ... Husqvarna Ab

02/02/17 / #20170031360

Obstacle detection for a robotic working tool

A robotic work tool system (200) comprising a robotic work tool (100) and a beacon marker (280), said robotic work tool (100) comprising a beacon sensor (175) configured to sense a signal being transmitted by the beacon marker (280), said beacon marker (280) marking an area (270) around an obstacle (260) in a work area (205) in which said robotic work tool (100) is arranged to operate, wherein said robotic work tool is configured to determine a proximity to a beacon marker (280) and to adapt its operation accordingly.. . ... Husqvarna Ab

01/26/17 / #20170025717

Battery pack with cell fixing apparatus

A battery pack may include a plurality of cells arranged substantially adjacent to each other such that longitudinal centerlines of each of the cells are aligned substantially in parallel with each other in a first direction, a physical cell connection assembly that includes a cell-retaining portion disposed to contact each of the cells to hold the cells in a housing, an electrical cell connection assembly that includes a plurality of cell connectors disposed to contact at least selected ones of the cells in groups to facilitate electrical connection of the cells associated with each of the groups, a contact portion of each of the cell connectors being disposed to electrically connect electrodes of at least two of the cells, and a printed circuit board (pcb) configured to monitor electrical parameters associated with the cells based on electrical communication between the pcb and the electrical cell connection assembly. At least one cell connector of the cell connection assembly may include a holding portion that engages the physical cell connection assembly and a fixing portion that extends substantially perpendicular to the plane of the pcb to engage the pcb to facilitate holding of the pcb relative to the physical cell connection assembly.. ... Husqvarna Ab

01/26/17 / #20170021766

Steering assembly indicator system for a lawn care or zero-turn vehicle

A riding lawn care vehicle may include a steering assembly and an indicator system may be incorporated into a portion of the steering assembly. The steering assembly, which may be, for example, a steering lever on a zero-turn vehicle, is coupled to a mechanism to move at least one wheel, and the indicator system may includes at least one illuminating element and/or display device that is configured to visually communicate information to an operator in response to detection of a predetermined trigger or condition occurring.. ... Husqvarna Ab

01/26/17 / #20170021489

Power equipment cooling system

A method of cooling blower components may include rotating a fan assembly (160) responsive to operation of a motor (120). The rotation of the fan assembly may create an underpressure region in an inlet portion (154) and an overpressure region at a main channel (340) of the fan assembly (160). ... Husqvarna Ab

01/19/17 / #20170016408

Method for optimizing a/f ratio during acceleration and a hand held machine

Method for optimizing the current a/f settings when accelerating the engine over at least one defined speed interval, the method comprising comparing at least two acceleration times of different a/f ratio that each encompasses at least one defined speed interval. Adjusting the a/f ratio based on the comparison.. ... Husqvarna Ab

01/12/17 / #20170006776

Plate spring adapted to hold a tool, a tool, a tool holder, a robotic work tool and a robotic working tool system

A robotic work tool system 200 comprising a robotic work tool 100, said robotic work tool 100 comprising a tool holder 160, e.g. In form of a disc, polygon, or comprising a plurality of arms, adapted to hold at least one tool 162 and adapted to be arranged in the robotic work tool 100, the tool holder 160 comprising at least one tool attachment means 164 and at least one spring attachment means 160a, 160b, 160c, wherein each tool attachment means 164 is positioned outside a respective spring attachment means 160a, 160b, 160c on a radius of the tool holder 160. ... Husqvarna Ab








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