公开(公告)号：US09713880B2

公开(公告)日：2017-07-25

申请号：US14765141

申请日：2014-01-31

Applicant: MAKITA CORPORATION

Inventor： Koji Haneda ,  Jiro Oda ,  Hideaki Sugiura ,  Daisuke Suzuki

IPC: H02J7/00 ,  B27B17/02 ,  B27B17/00 ,  B25F5/02

CPC classification number: B27B17/02 ,  B25F5/02 ,  B27B17/00 ,  B27B17/0008

Abstract: 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.