Invention Grant
- Patent Title: Electric power tool
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Application No.: US15214995Application Date: 2016-07-20
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Publication No.: US10661424B2Publication Date: 2020-05-26
- Inventor: Fumiaki Sawano , Masaaki Okada , Hidekazu Yuasa
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@770cd7fc
- Main IPC: B25F5/00
- IPC: B25F5/00 ; B23B45/00 ; B25B21/00

Abstract:
An electric power tool includes a motor, an output shaft, a drive force transmission configured to reduce drive speed of the motor and transmit drive force of the motor to the output shaft; a trigger that can be pulled by a user; a rotation speed changing circuitry configured to change a rotation speed of the output shaft that corresponds to a maximum pulled amount of the trigger to a limited rotation speed that is lower than a maximum rotation speed of the output shaft in a non-limited rotation speed mode; and a rotation speed control circuitry configured to control a rotation speed of the motor in correspondence with a pulled, amount of the trigger to obtain the rotation speed of the output shaft that is changed by the rotation speed changing circuitry.
Public/Granted literature
- US20170036337A1 ELECTRIC POWER TOOL Public/Granted day:2017-02-09
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