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:
Feb. 06, 2004
David Ling, Taichung, TW;
Hsien Chung Tuan-mu, Taichung, TW;
David Ling, Taichung, TW;
Hsien Chung Tuan-Mu, Taichung, TW;
Other;
Abstract
A process for manufacturing ratchet wheels including the steps of: forming a cylindrical forging billet by hot or cold forging, the forging billet having a thru hole of inter-communicating recesses which are pre-formed in a forging die; providing a broach having teeth formed thereon; machining the forging billet into a workpiece having a sidewall with two annular grooves on the sidewall; forming a semi-product having a driving recess which is complementary in shape to the teeth by operating the broach through the workpiece along the thru hole; and forming a finished product having a plurality of teeth on a sidewall thereof by milling the semi-product.