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:
Nov. 01, 2005
Filed:
Apr. 21, 2004
Applicant:
Rui-chi Shen, Taichung Hsien, TW;
Inventor:
Rui-Chi Shen, Taichung Hsien, TW;
Assignee:
Stanley Chiro International, Ltd., Taichung Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B013/46 ;
U.S. Cl.
CPC ...
Abstract
A ratchet wrench includes a handle, a drive head, a ratchet wheel, a control knob, and a substantially C-shaped limit spring. Thus, the control knob is rigidly and stably positioned in the receiving chamber of the drive head by the limit spring, thereby facilitating a user operating the control knob. In addition, the ratchet wrench only needs to provide a limit spring to position the control knob rigidly and stably, so that the ratchet wrench has a simplified construction, thereby decreasing costs of fabrication.