The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2016
Filed:
Dec. 04, 2013
Chervon (Hk) Limited, Wanchai, HK;
Liang Chen, Nanjing, CN;
Qiwei Zhou, Nanjing, CN;
CHERVON (HK) LIMITED, Wanchai, HK;
Abstract
An electrical wrench includes a motor, a transmission mechanism, a ratchet assembly and a controlling member coupled to each other. The transmission mechanism is configured to provide idle travels. The ratchet assembly receives the rotating torque output by the transmission mechanism and drives the ratchet therein in a single direction. The controlling member is connected with the motor and controls the motor to rotate in the opposite direction when detecting the motor is stalled. The electrical wrench thus provides impacting action by electrical control and simplifies the mechanical structure of the tool, which not only reduces the manufacturing cost, but also prolongs the working life of the tool.