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Hitachi Koki Co Ltd
Hitachi Koki Co Ltd_20100107
Hitachi Koki Co Ltd_20131212

Hitachi Koki Co Ltd patents

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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Hitachi Koki Co Ltd-related inventors

 new patent  Power tool

A power tool includes: a brushless motor; a rectifier circuit; a smoothing circuit; an inverter; a controller; an operating part; and a switch. The switch is rendered ON in accordance with an operation performed in the operating part by a user to allow power to be supplied to the inverter... Hitachi Koki Co Ltd

Power tool

To provide a power tool configured to stably rotate an end tool. The provided power tool includes a brushless motor including a rotor configured to rotate; a rectifier circuit configured to rectify an AC voltage; a smoothing capacitor configured to smooth the AC voltage rectified by the rectifier circuit to... Hitachi Koki Co Ltd

Power tool

A power tool capable of appropriately performing discharge control with respect to respective battery packs whose battery types are different from each other. The power tool includes: a battery connecting part to which one of a first battery pack and a second battery pack having capacity smaller than that of... Hitachi Koki Co Ltd

Driving machine

A driving machine capable of performing replenishment of air in a pneumatic chamber includes: a housing; a cylinder provided within the housing; a pneumatic chamber spatially connected to the cylinder; a piston reciprocally movably provided in the cylinder; a blade attached to the piston and striking a stopper; and a... Hitachi Koki Co Ltd

Portable electric cutter

A portable electric cutter includes a housing in which a motor is accommodated, a saw blade driven to rotate by the motor, a base coupled to the housing and having a bottom surface slidable on a surface of a material to be cut, a fan driven to rotate by the... Hitachi Koki Co Ltd

Impact tool

An impact tool that realizes an ON-lock function with a simple mechanism and makes it possible to switch between activation and deactivation of the ON-lock function with few operation processes is provided. A hammer drill having at least two operating modes including a hammer mode in which an impact force... Hitachi Koki Co Ltd

Impact tool

An impact tool in which stop control of a motor as power source of a tool bit is changed in accordance with a predetermined condition is provided. A hammer drill having two or more operating modes including a hammer mode in which an impact force is transmitted to a tool... Hitachi Koki Co Ltd

Engine and engine-driven working machine

The temperature of exhaust gas discharged from a compact air-cooled engine used as a power source for an engine-driven working machine is reduced. An engine has a muffler mounted directly to the exhaust opening of the cylinder, and a resin muffler cover covering the muffler. An exhaust gas restriction member... Hitachi Koki Co Ltd

Engine and engine-driven working machine

An engine is configured so that a muffler is affixed to the exhaust opening of the cylinder, and the air-cooled cylinder is cooled by a cooling fan. The engine is provided with a muffler cover for covering the muffler, and exhaust gas is discharged inside the muffler cover along the... Hitachi Koki Co Ltd

Work machine

In order to provide an impact work machine capable of preventing oil leakage and cooling a power transmission apparatus, an impact work machine transmitting power of an electric motor 16 including an output shaft extending in an axis A1 direction to an anvil includes: a housing including a motor case... Hitachi Koki Co Ltd

Electric tool

In order to provide an electric tool with good operability that can extend the life of and suppress breakage of a switching element for controlling energization of a brushless motor, a control unit (50), after an operation switch (5) is turned off, does not immediately turn off an inverter circuit... Hitachi Koki Co Ltd

Electric device

To provide an electric device that includes a compact cover that is easy to open and close. A portable radio 1 includes: a housing 2 including a device body 2A and a cover 2B, the device body 2A including an adapter compartment 9 configured to accommodate an adapter 8 connectable... Hitachi Koki Co Ltd

Charging device

To reduce standby time during charging, a charging device includes a housing on which a battery pack is detachably mountable, a control board, and a cooling fan. The battery pack is formed with a vent hole. The housing is formed with a ventilation opening configured to face the vent hole.... Hitachi Koki Co Ltd

Powered working machine

A powered working machine (10) with which the transmission of vibrations from a housing to a control substrate can be suppressed, operates a distal tool using power from a brushless motor (30), is configured to have: a control substrate (71) that controls the brushless motor (30); a substrate case (82)... Hitachi Koki Co Ltd


In order to provide a driver for reducing reaction generated to a driver main body, the driver 1 includes a nose portion 3 provided in a housing 2 and extending in a longitudinal direction, the nose portion being configured to allow a fastener to pass therethrough, a plunger 7 configured... Hitachi Koki Co Ltd

Fastener driving tool

A fastener driving tool is provided which performs driving only when a trigger lever is turned ON following a push lever. The fastener driving tool includes a sleeve valve driving a driver blade, and in the sleeve valve, supply and exhaust of compressed air are controlled by a trigger valve.... Hitachi Koki Co Ltd

Impact tool

In order to suppress a galling phenomenon between an impact member and a rotating member even when a gouging force acts on an impact tool, an inclined portion is provided between a wall portion which is provided between a pair of hammer cams and in a circumferential direction of a... Hitachi Koki Co Ltd

Electric tool

Provided is an easy-to-use electric tool with which braking force can be changed according to work conditions. When an operation switch 5 is turned off, a control unit 50 detects a rotation rate R1 of an electric motor 6. The control unit 50 stands by for a prescribed period, detects... Hitachi Koki Co Ltd

Two-cycle engine and engine work machine

The disclosure provides a two-cycle engine and an engine work machine. When a piston is located on the side of a bottom dead center, at a part corresponding to a notch part in the piston, an inner surface of the crank case protrudes toward an interior side to form a... Hitachi Koki Co Ltd

Electric working machine

The present invention provides an electric working machine in which a control board can be disposed without limitations based on a length of a brushless motor in a direction along an axial line. The electric working machine comprises: a brushless motor provided with a rotor and a stator; a motor... Hitachi Koki Co Ltd

Impact tool

Provided is an impact tool which can perform control in accordance with working situations. The impact tool converts a torque of a brushless motor into a striking force and applies it to a tip tool. The impact tool includes: a motor control unit which makes detection about whether the tip... Hitachi Koki Co Ltd

Electric work machine

Provided is an electric work machine that can suppress a temperature increase of a component controlling an electric motor. The electric work machine including a brushless motor that operates a tip tool includes a rectification circuit that converts a voltage to be applied to the brushless motor from an alternating... Hitachi Koki Co Ltd

Reciprocating tool

A reciprocating tool with a reduced number of parts is provided. A jigsaw reciprocates a saw blade in a direction along an axis with the power of an electric motor. The jigsaw includes a housing accommodating the electric motor, a guide member fixed to the housing and provided along the... Hitachi Koki Co Ltd

Driving machine

The disclosure discloses a driving machine includes a trigger, a first switch turned on or off by an operation of the trigger, a push lever that moves in response to an operation of pressing an ejection port of a fastener against a driven material, and a second switch turned on... Hitachi Koki Co Ltd

Electric tool

In order to provide an electric tool such that the capacitances of noise-suppressing film capacitors can be increased without increasing the diameter of a handle section, the housing of the electric tool comprises: a body section that stores a brushless motor, a striking mechanism part, and a portion of an... Hitachi Koki Co Ltd

Driving machine

In order to provide a driving machine which achieves reciprocating movements of a rack using a simple mechanism and is able to smoothly engage and disengage the rack by reducing the friction during engagement and disengagement of the rack, the driving machine is equipped with: a nose that extends in... Hitachi Koki Co Ltd

Power tool and battery pack

A power tool includes a motor and control means for controlling the motor. The motor is capable of being driven by power supplied from a battery pack including a battery cell. The control means is configured to continue to rotate the motor even when a motor-halt signal is inputted from... Hitachi Koki Co Ltd

Electric tool

An electric tool is provided with a rotary striking mechanism unit converting the rotational force of a brushless motor to a striking force and applying the striking force to a tip tool. The required rated input of the motor is 1000-1300 W, the motor speed under fixed speed control is... Hitachi Koki Co Ltd

Electric tool

An electric tool is provided. This electric tool includes a controller which controls power supply to the motor in response to operation of a switch lever which turns rotation of the motor ON and OFF. The electric tool includes a magnetic body provided on a movable arm which is moved... Hitachi Koki Co Ltd

Electric operating machine

When a main switch (12) is turned ON, an electric operating machine (1)is put in the standby mode. With a trigger (13) being pulled in the standby mode, a power supply circuit (16) applies a voltage to a drive part (30). The power supply circuit (16) adjusts the voltage applied... Hitachi Koki Co Ltd

Impact tool

In order to increase the screw tightening speed and improve the work efficiency, three first pawls 30e of a hammer 30 and three second pawls 18d of an anvil 18 are provided, so that a striking interval can be set to “interval of 120 degrees”, which is shorter than that... Hitachi Koki Co Ltd

Electric tool

An electric tool is provided. The electric tool prevents anomalies in motor rotation due to dust and moisture sucked in together with a cooling wind, and is configured such that rotational position detection operations and switch operations are not affected. In the electric tool which drives a brushless DC motor... Hitachi Koki Co Ltd

Liquid discharge apparatus

A high-pressure washing machine is provided, which can stop a brushless motor even if the function of a microcomputer declines. The high-pressure washing machine is provided as a high-pressure washing machine 10 having a pump 12 which sucks and discharges a washing solution and a brushless motor 14 supplied with... Hitachi Koki Co Ltd

Electric tool

An electric tool including a motor configured to be driven by a PWM control of a semiconductor switching element by using a power supply, a power transmission mechanism configured to transmit a rotation of the motor to an end tool, and a controller configured to control a rotation of the... Hitachi Koki Co Ltd

Electric tool

A grinder includes a spindle on which a grindstone wheel is mounted, and a wheel guard covering the grindstone wheel, the grinder including: an attachment portion having a housing portion and provided to a main body rotatably holding the spindle to surround the spindle; a fitting portion being provided to... Hitachi Koki Co Ltd

02/23/17 / #20170050196

Centrifuge and swing rotor for centrifuge

The present invention provides a centrifuge comprising a lid section of a sample container, the lid section having a rotating shaft for swinging, and a swing-type rotor, and the centrifuge conducts centrifugation operation in a state where the sample container is seated in a bucket housing section by making the... Hitachi Koki Co Ltd

02/16/17 / #20170043466

Work tool

The disclosure provides a work tool having an electric motor, a power transmission means that receives motive power from the electric motor and transmits the motive power to a tip tool, a gear housing for accommodating at least a portion of the power transmission means, weights swingably supported on the... Hitachi Koki Co Ltd

02/16/17 / #20170047618

Cell pack, charging device and electric tool

The present invention provides a charging device, an electric tool and a cell pack which is provided with an IC tag to make it possible to identify the type of cell group. A cell pack includes: a cell group, having one or more secondary cells; a case for accommodating the... Hitachi Koki Co Ltd

02/09/17 / #20170036327

Electric tool

Provided is an impact type electric tool. A striking mechanism is used, which uses a hammer having striking claws that are equally arranged in the rotational direction and an anvil having struck claws. A relationship between a striking energy E, which the hammer has right before striking the anvil, and... Hitachi Koki Co Ltd

01/12/17 / #20170012572

Work tool

To provide a work tool capable of suppress temperature rise in a motor or a switching element. The work tool includes: a motor; a switching element switchable between an ON-state and an OFF-state, the switching element allowing a current to flow through the motor during the ON-state, the switching element... Hitachi Koki Co Ltd

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009


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 Hitachi Koki Co Ltd 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 Hitachi Koki Co Ltd with additional patents listed. Browse our Agent directory for other possible listings. Page by