Electric chainsaw

Patent metadata

Field	Value
Publication number	US-10328600-B2
Application number	US-201515513656-A
Country	US
Kind code	B2
Filing date	Oct 1, 2015
Priority date	Oct 8, 2014
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

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.

First claim

What is claimed is:

1. A chainsaw comprising:
a housing;
an electric motor housed in the housing;
a rechargeable battery pack detachably attached onto the housing and used as a power source of the electric motor;
a guide bar having a base end fixed to a front portion of the housing, the guide bar protruding forwardly from the housing;
a saw chain provided around an outer periphery of the guide bar in a tensioned state and in an endlessly movable manner, the electric motor driving the saw chain;
a first handle having a first grip portion provided on a rear portion or an upper portion of the housing, the first grip portion extending in a forward-rearward direction and being configured to be gripped by one hand of a worker, the first grip portion including a trigger switch for activating the electric motor;
a second handle having a second grip portion located forward of the first grip portion, the second grip portion extending in a lateral direction and being configured to be gripped by the other hand of the worker;
an indicator lamp for indicating a remaining charge amount of the battery pack, the indicator lamp being provided at a position on the housing at which the worker is able to view the indicator lamp while gripping the first grip portion and the second grip portion; and
an indicator switch for turning on the indicator lamp, the indicator switch being provided at a position where the worker can operate the indicator switch using a finger of the other hand while the worker is gripping the second grip portion,
wherein the housing has an upper surface and side surfaces, and each of the indicator lamp and the indicator switch is positioned on an upper surface of the housing, and
wherein the indicator switch is disposed in a vertical direction with respect to the forward-rearward direction and that is orthogonal to the lateral direction and is configured to be depressed in the vertical direction to permit the worker to operate the indicator switch by depressing the indicator switch in the vertical direction.

2. The chainsaw as recited in claim 1 , wherein the indicator switch is provided at a position where the worker can operate the indicator switch using a thumb or a forefinger of the other hand being gripping the second grip portion.

3. The chainsaw as recited in claim 1 , wherein the indicator switch is provided within 10 cm from the second grip portion.

4. The chainsaw as recited in claim 1 , wherein the indicator switch is provided on the second grip portion.

5. The chainsaw as recited in claim 1 , wherein the indicator switch is provided on an upper surface of the battery pack, and wherein the battery pack is disposed on the housing at a position close to the second grip portion so as to enable the indicator switch to be operated by a finger of the other hand of a worker that is gripping the second grip portion.

6. The chainsaw as recited in claim 1 , wherein the indicator lamp and the indicator switch are arranged at positions close to each other.

7. The chainsaw as recited in claim 1 , wherein the indicator lamp and the indicator switch are arranged at positions spaced apart from each other.

Assignees

• Makita Corp

Inventors

• Kachi Hideki
• Kawabata Yasuyuki
• Haneda Koji

Classifications

• B27B17/02

  Chain saws equipped with guide bar (B27B17/06 takes precedence) · CPC title

• B27B17/08 Primary

  Drives or gearings; Devices for swivelling or tilting the chain saw · CPC title

• B27B17/0008

  Means for carrying the chain saw, e.g. handles (B27B17/0033 takes precedence) · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• B23D59/001

  Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade (measuring in general G01; controlling in general G05) · CPC title