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:
May. 02, 2006
Filed:
May. 19, 2003
Applicant:
Yu-cheng Lin, Taichung, TW;
Inventor:
Yu-Cheng Lin, Taichung, TW;
Assignee:
Lea Way Hand Tool Corporation, Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B 23/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention provides an articulated wrench, comprising: a box end; a handle; a fastening device passing through the through holes of the box end and handle; and a flexed spring disc. The fastening device has a head and a shank, wherein the head gradually expands outwards from the shank to form a flared angle having a tapering angle less than 45°. The flexed spring disc is provided in the indent of the box end and flexed along a diameter thereof to form a curvature.