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:
Jan. 29, 1991
Filed:
Apr. 09, 1990
Shyh Y Chern, Ta Li Hsiang, Taichung Hsien, TW;
Other;
Abstract
A power wrench includes a socket which is rotatably retained in a head portion of the wrench by a retainer. A yoke is actuated to rotate reciprocally by a driving axle. A number of recesses are formed in the middle portion and the upper portion of the socket, each recess in the middle portion of the socket receives a roller, and each recess in the upper portion of the socket receives a ball. When the yoke rotates in one direction, the socket is actuated to rotate by the rollers. When the yoke rotates in a reverse direction, the balls are caused to hold the socket and prevent the socket from backlash.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile