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. 17, 2020
Filed:
May. 05, 2015
Hangzhou Great Star Tools Co., Ltd., Hangzhou, CN;
Hangzhou Great Star Industrial Co., Ltd., Hangzhou, CN;
Min Wang, Hangzhou, CN;
Hangzhou Great Star Tools Co., Ltd., Hangzhou, CN;
Hangzhou Great Star Industrial Co., Ltd., Hangzhou, CN;
Abstract
Disclosed is a wrench, which is used for wrenching a workpiece and comprises a unidirectional transmission mechanism. The unidirectional transmission mechanism comprises rollers, a first member and a second member at least partially sheathed in the first member. The first member is fixedly provided at a wrenching portion of the wrench, and the second member is used for mating with the workpiece. The directions of the rotating torque from the wrenching portion are a first direction and a second direction along the axis of rotation of the first member. With regard to one of the rotating torque of the first direction and the rotating torque of the second direction, the second member is stationary relative to the first member so as to output the rotating torque to the workpiece; and with regard to the other one thereof, the second member rotates relative to the first member without outputting the rotating torque to the workpiece. The torque of the unidirectional transmission mechanism can meet the demand of using a wrench, and at the same time, the unidirectional transmission mechanism remains silent in use and has the characteristic of wear resistance of bearings.