公开(公告)号：US20190381687A1

公开(公告)日：2019-12-19

申请号：US16522722

申请日：2019-07-26

Applicant: MAKITA CORPORATION

Inventor： Koji HANEDA ,  Hideki KACHI ,  Yasuyuki KAWABATA

IPC: B27B17/08 ,  B27B17/02 ,  B27B17/00

Abstract: 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.

公开(公告)号：US20170297216A1

公开(公告)日：2017-10-19

申请号：US15513656

申请日：2015-10-01

Applicant: MAKITA CORPORATION

Inventor： Hideki KACHI ,  Yasuyuki KAWABATA ,  Koji HANEDA

IPC: B27B17/08 ,  B25F5/02 ,  B27B17/00 ,  B27B17/02

CPC classification number: B27B17/08 ,  B23D59/001 ,  B25F5/02 ,  B27B17/00 ,  B27B17/0008 ,  B27B17/02

Abstract: An electric chainsaw comprises: a first handle having a forwardly and rearwardly extending grip portion provided on a rear or upper portion of a housing housing an electric motor and configured to be gripped by one hand of a worker, the grip portion being provided with a trigger switch for activating the electric motor; a second handle having a laterally extending grip portion provided forward of the grip portion of the first handle and configured to be gripped by the other hand of the worker; 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, wherein the indicator switch is provided at a position where the worker can operate the indicator switch by a finger of the other hand being gripping the grip portion of the second handle.

公开(公告)号：US20170203462A1

公开(公告)日：2017-07-20

申请号：US15328364

申请日：2015-07-08

Applicant: MAKITA CORPORATION

Inventor： Koji HANEDA ,  Hideki KACHI ,  Yasuyuki KAWABATA

IPC: B27B17/08 ,  B27B17/00 ,  B27B17/02

CPC classification number: B27B17/08 ,  B27B17/00 ,  B27B17/0008 ,  B27B17/02

Abstract: 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.