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.:

US 8640572 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 04, 2014

Filed:

Aug. 07, 2011
Applicant:

Jun Fan Chen, Taichung, TW;

Inventor:

Jun Fan Chen, Taichung, TW;

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A wrench includes a transmitting device and a shell. The transmitting device comprises a rotor, a first working member, a second working member, a first linking member and a second linking member. The first linking member is disposed between the first working member and the rotor. The shell has a containing room for the linking device to be disposed therein. The shell comprises a middle section. The first end of the middle section extends upwardly to connect with the first section. The second end of the middle section extends downwardly to connect with the second section. Thus, the wrench has two stair portions of different horizontal level. And Users can hold the wrench more stably. Because the wrench uses the rotor and two linking members to drive the first working member and the second working member rotating, a total size of the wrench can be kept as smaller as possible.


Find Patent Forward Citations

Chen, Jun. (2014). Wrench (U.S. Patent No. 8640572). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8640572

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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