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Yamabiko Corporation patents

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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "Y" | Yamabiko Corporation-related inventors

Engine knocking detection apparatus

Provided is an engine knocking detection apparatus capable of reasonably implementing necessary measures for water and dust proofing and against breaking of a cable, and the like at low cost as well as precisely detecting and effectively suppressing or avoiding knocking while suppressing cost and weight increases as much as possible. The engine knocking detection apparatus is adapted to detect knocking in an engine that adopts a flywheel magneto ignition system with an ignition coil unit securely attached to a cylinder, the ignition coil unit including an iron core, a coil wound around the iron core, and a control circuit board attached to the coil, and has an accelerometer for knocking detection attached to the iron core of the ignition coil unit.. ... Yamabiko Corporation

Handheld engine-driven working machine

A handheld engine-driven working machine comprises an internal combustion engine and an ignition control device; wherein the ignition control device can switch its control between a normal mode and a operation mode, wherein during the operation mode, the ignition timing within the high speed range is maintained at a second btdc angle, and the ignition timing within the medium speed range is advanced more than a third btdc angle between a first btdc angle and the second btdc angle, and wherein at any rotational speed within the medium speed range, the ignition timing during the operation mode is advanced more than the ignition timing during the normal mode.. . ... Yamabiko Corporation

Portable engine working machine and rotary carburetor incorporated therein

To improve responsiveness of fuel supply control, a rotary carburetor 100 has a nozzle 8 including a fuel discharge port 8a and a needle 10 disposed coaxially with the nozzle 8 and disposed with a portion inserted into the nozzle 8. The needle 10 can be displaced relative to the nozzle 8 to change an effective area of the fuel discharge port 8a. ... Yamabiko Corporation

Portable brush cutter

Provided is a portable brush cutter with reduced weight and size due to its simple structure with a small number of components that is capable of improving durability and the like as well as effectively suppressing torsional vibration of a transmission shaft. In the portable brush cutter, a one-way clutch to prevent generation of torsional vibration in a rotation transmission path is interposed between an output shaft and a transmission shaft, and bearings are adjacently mounted on the opposite sides of the one-way clutch.. ... Yamabiko Corporation

Suction tube of stratified scavenging engine

A suction tube of a stratified scavenging engine that can improve the flexibility in designing the shapes and layouts of an air-fuel mixture passage and an air passage; allow for continuous and smooth changes in the shapes of the cross sections of the air-fuel mixture passage and the air passage from the inlet side toward the outlet side; reduce the number of components; and facilitate attachment and assembly; and that is also advantageous in terms of cost is provided. The suction tube includes an air-fuel mixture passage and an air passage, inlet and outlet sides of the passages being connected to a carburetor and a cylinder, respectively; a cylindrical exterior member that mainly forms an outer perimeter portion of each of the air-fuel mixture passage and the air passage; and an interior member for dividing the inside of the cylindrical exterior member into the air-fuel mixture passage and the air passage. ... Yamabiko Corporation

Handle for electric tools and electric tool provided with same

A handle includes: a switch lever having an operational portion in an inverted u-shape, and configured to press an on/off switch when the operational portion is gripped and pressed; a handle body provided with the on/off switch mounted thereto and having an inner peripheral slit from which the operational portion of the switch lever housed in the handle body projects; a spring having a supported portion and a pair of arms extending from the supported portion, housed in the handle body, and biasing and pushing the switch lever back; and a plurality of limiters provided at locations in either the handle body or the switch lever at a distance from the spring, and configured to limit movement of the switch lever.. . ... Yamabiko Corporation

Handheld engine-driven working machine

A handheld engine-driven working machine comprises an internal combustion engine with a throttle valve, a throttle adjusting device for adjusting an opening degree of the throttle valve of the internal combustion engine, and a control device provided in the internal combustion engine. The control device is configured to detect a rotational speed and an amount of change in the rotational speed at every at least one rotation of the internal combustion engine. ... Yamabiko Corporation

Blow operation device

To reduce fatigue in the arm of an operator of a blow operation device driven by an electric motor and to realize a blow operation of blowing and gathering generated compressed air from both the right and left with a small operational burden. A blow operation device includes a backpack type frame, a battery attached to the frame, a blower body having an electric motor to which power is fed from the battery and having an axial fan driven by the electric motor, and a blower tube connected to a blow side of the blower body, the frame including a back contact surface, and the blower body being attached to the frame such that axial directions of the electric motor and the axial fan are along the back contact surface.. ... Yamabiko Corporation

Blow operation device

In an operation using a blow operation device driven by an electric motor, fatigue in the arm of an operator is reduced. A blow operation device includes a backpack type frame, a battery attached to the frame, a blower body having an electric motor to which power is fed from the battery and having an axial fan driven by the electric motor, and a blower tube connected to a blow side of the blower body, the blower body being supported pivotally on the frame to be rockable vertically and horizontally.. ... Yamabiko Corporation

Portable power working machine

Provided is a portable power working machine in which suction of clothing to a safety guard can be reliably prevented and the amount of a portion protruding laterally from one side surface portion of a fan case can be reduced so as to enable a required air blowing performance to be obtained without causing an increase in size or weight or deterioration of the operability thereof. A suction port for inhaling air is provided on one side surface portion of a fan case of an air blower, and a safety guard is provided in the suction port. ... Yamabiko Corporation

Battery-powered working machine

Provided is a battery-powered working machine including a protective bracket which is able to be secured to a casing while being in engagement with a battery pack, which is capable of preventing theft of the battery pack, and which separates a casing-side connection terminal from a battery-side connection terminal at a distance to keep the casing-side and battery-side connection terminals and out of contact with each other.. . ... Yamabiko Corporation

Air cleaner of engine for portable working machine

An air cleaner includes: a frame member equipped at an intake port of a carburetor and provided with an air inlet port; a filter held by a holding part included in the frame member; a lid member configured to cover a front face of the filter; and a screw with a knob, the screw being configured to connect the frame member and the lid member together. The frame member is provided with an insertion hole, where the screw with the knob is inserted, on the outer side of the holding part. ... Yamabiko Corporation

Engine exterior body

To provide an exterior body to attach to an engine body, where the exterior body is not limited to where it may be installed, is safe and has excellent dust proofing capability. An engine exterior body (2) is provided with a frame body (20) configured to attach to an engine body (1); a shaft part (21) projecting from the surface of the frame body (20); and a rotator body (22) including a hole part (22a) loosely fitted and retained on the shaft part (21). ... Yamabiko Corporation

Structure for preventing falling of fastening nut of portable power working machine, and method for attaching fastening nut to cover

A structure for preventing the falling of a fastening nut of a portable power working machine that can reliably prevent loss of the nut while suppressing the production and component costs, allows for easy operation of attaching a nut anchor member to a cover, and can increase the maintenance property, suppress damage and failures, increase the durability, and reduce the size and weight; and a method for attaching the fastening nut to a cover are provided. The structure includes a nut locking member, which is inserted through a bolt insertion hole from a back surface side of a cover so that movement of the nut locking member to a front surface side is prevented, and has a split cylindrical shape with elastically deformable leg-like piece portions; an anchoring cylindrical portion with a predetermined length functioning as a nut anchor member, the anchoring cylindrical portion being provided in a protruding manner and coaxially with the nut on a seating surface side, being adapted to be inserted through the bolt insertion hole, and being relatively difficult to elastically deform with respect to the nut locking member. ... Yamabiko Corporation

06/22/17 / #20170175615

Leading-air type two-stroke air-cooled engine

To balance a “low-temperature scavenging effect” and a “high-temperature scavenging effect.” a scavenging system applicable to a leading-air type two-stroke air-cooled engine has a low-temperature scavenging passage and a high-temperature scavenging passage. The low-temperature scavenging passage has first and second passages and includes scavenging ports at upper end parts thereof. ... Yamabiko Corporation

05/11/17 / #20170130642

Rotary carburetor for two-stroke internal combustion engine

To allow an intake negative pressure to directly act on a fuel outlet formed on a nozzle tube, and to guide a fuel discharged from the fuel outlet in the nozzle tube to the fuel-air mixture passage. A rotary carburetor (200) has a guide plate member (42) downstream of a fuel outlet (30) located in a through-hole (14). ... Yamabiko Corporation

05/04/17 / #20170120471


A chainsaw includes a chainsaw body, a guide bar and a saw chain. The chainsaw body includes an oil tank, an oil pump to supply oil stored in the oil tank to a sliding portion between the guide bar and the saw chain, a first extension chamber arranged above the oil tank and a second extension chamber arranged above the first extension chamber. ... Yamabiko Corporation

02/02/17 / #20170030232

Engine-driven working machine

. . An engine-driven working machine has an engine unit, a housing, and a vaned rotor. An air passage is defined between a crankcase of the engine unit and a bottom wall of the housing. ... Yamabiko Corporation

01/12/17 / #20170007087

Vacuum cleaner

To provide a vacuum cleaner capable of effectively preventing damage to a fan and a fan case without significantly decreasing the suction force. The vacuum cleaner includes a suction portion, a centrifugal separation portion, and a first collection portion that are provided on an upstream side of a fan stored in a fan case; and a second collection portion provided on a downstream side of the fan. ... Yamabiko Corporation

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with Yamabiko Corporation in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Yamabiko Corporation with additional patents listed. Browse our Agent directory for other possible listings. Page by