公开(公告)号：US10131450B2

公开(公告)日：2018-11-20

申请号：US15141143

申请日：2016-04-28

Applicant: MAKITA CORPORATION

Inventor： Toru Hiroshima ,  Yuta Kawai ,  Sho Kume ,  Kenji Nose ,  Yuki Wada ,  Naoki Ozawa

IPC: B23Q11/00 ,  B64F5/60 ,  B23Q11/06 ,  B23D47/00 ,  B27B9/00

Abstract: A machining device may include an electric motor, a blade rotatably driven by the electric motor for machining a workpiece, and a blade cover configured to surround the blade. A resonance sound reduction device may be disposed at the blade cover and may reduce air vibration generated by the rotation of the blade.