Makita Corporation

Makita Electric Works, Ltd.

Koji Haneda

Hideki Kachi

Yasuyuki Kawabata

Fusao Fushiya

Yoshio Yokoyama

Tsunahisa Nakamura

Naohiro Hayakawa

Daisuke Suzuki

Jiro Oda

Ryosuke Ito

Hideaki Sugiura

Masaki Sakuragi

Hidenori Ito

Mamoru Kawasaki

Yuriko Nagaya

A chainsaw includes a handle with a handgrip; an electric motor for endlessly moving a saw chain; a control unit for controlling rotation of the motor; and a main power switch switchable between an ON state and an OFF state. The handgrip is provided with a gripping detection device for detecting whether the handgrip is gripped by the worker, and the chainsaw is configured to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is gripped, maintain the main power switch in the ON state, and to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is not gripped, switch the main power switch to the OFF state.

Chainsaw

Disclosed is a chainsaw capable of making it less likely that vibrations due to driving of an electric motor and a endless movement of a saw chain are transmitted to a worker, thereby enabling the worker to become less likely to be fatigued even in work using the chainsaw. The chainsaw includes an electric motor provided inside a body casing; a guide bar provided in a front portion of the body casing in such a manner as to protrude forwardly; a saw chain provided around an outer periphery of the guide bar in an endlessly movable manner, and configured to be endlessly moved along the outer periphery of the guide bar under driving of the electric motor; a handle section provided with respect to the body casing, and configured to be gripped by a worker; and an anti-vibration member interposed between the body casing and the handle section.

To provide an easy-to-use electric chainsaw that uses, in place of a large battery pack with a high voltage rating that would have been used in conventional electric chainsaws, a battery power source composed of a set of small commonly used battery packs of the same rating. An electric chainsaw having a built-in electric motor that is powered by a rechargeable battery, wherein a set of commonly used battery packs of the same rating is used as the rechargeable battery. The set of battery packs is mounted at the back of the main housing so that the center of gravity (G) of the chainsaw is positioned within a range (R) of 1.5 time the width (W) of the grip section of a rear handle between the left and right sides of a center line that is centered in the horizontal direction.

Electric chainsaw

An electric chainsaw includes a first handle having a grip portion that is provided with a trigger switch for activating an electric motor. The electric chainsaw includes a second handle having a laterally extending grip portion provided forward of the grip portion of the first handle. The electric chainsaw includes an indicator lamp for indicating a remaining charge amount of a battery pack, and a push-button type indicator switch for causing the indicator lamp to indicate the remaining charge amount. The indicator switch is provided at a position where the worker can operate the indicator switch by a finger of the other hand gripping the grip portion of the second handle.

Disclosed is a chainsaw capable of introducing outside air into a body casing by rotation of a cooling fan to adequately cool a control unit provided inside the body casing. The chainsaw is configured to cool a control unit provided inside a body casing by a cooling fan being rotated under driving of an electric motor, wherein a handle comprises a base portion through which the handle () is attached to the body casing, and a grip formed to extend from the base portion in such a manner as to be grippable by a worker; and an air inlet is formed in a counter wall of the body casing opposed to the base portion of the handle, and wherein the base portion is attached to the counter wall of the body casing to cover the air inlet in an air introduceable state.

A chainsaw includes a body housing, an elongated guide bar projecting forward from the body housing, a saw-chain mounted on the periphery of the guide bar for rotation, an electric motor mounted within the body housing for rotating, and a top handle provided on an upper portion of the body housing above the guide bar and extending in a fore-and-aft direction. A plurality of rechargeable battery packs is mounted on the body housing as a source of power supply for the electric motor. The battery packs are mounted to the body housing in such a manner that a center of gravity of the chainsaw observed from the back side is positioned in a two times extent of lateral width of a gripe portion of the top handle at both sides of a vertical centerline of the gripe portion.

A bush cutter is provided with a main pole, a cutting blade disposed at an anterior end of the main pole, a prime mover disposed at a posterior end of the main pole and configured to drive the cutting blade, and a handle disposed at an intermediate portion of the main pole and provided with a grip that is configured to be grasped by a user. The grip is provided with a driving switch for driving the cutting blade and an adjusting switch for adjusting at least one of a rotation speed and a rotation direction of the cutting blade. The driving switch and the adjusting switch are arranged so as to enable the user who grasps the grip to operate the driving switch and the adjusting switch with a hand grasping the grip without releasing the hand from the grip.

Bush cutter

Portable florescent lamp

A hedge trimmer includes a motor and a cutting mechanism driven by the motor. A clutch mechanism is interposed between the motor and the cutting mechanism. A first and a second handle are provided to be grasped with both hands of an operator. A clutch control mechanism is provided for connecting and disconnecting the clutch mechanism. The clutch control mechanism includes a first and a second switch lever which are associated with the first and second handles, respectively, and which are operable by the operator between a first and a second position, respectively. A pin is operably connected to the first and second switch levers and is movable between a connecting position for connecting the clutch mechanism and a disconnecting position for disconnecting the clutch mechanism. Biasing members serve to hold the pin at the disconnecting position when at least one of the first and second switch levers are at the first position. The biasing members permit movement of the pin from the disconnecting position to the connecting position when both the first and second switch levers are moved from the first position to the second position.

Growing community of inventors

Aichi, Japan

Koji Haneda