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. 22, 2011
Filed:
May. 19, 2010
Applicant:
W. Richard Pamer, Macedonia, OH (US);
Inventor:
W. Richard Pamer, Macedonia, OH (US);
Assignee:
R B & W Manufacturing LLC, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 53/24 (2006.01); B21K 1/64 (2006.01);
U.S. Cl.
CPC ...
Abstract
A metal clinch fastener has portions thereof selectively hardened to enable use of the fastener with metal members of differing hardness values. The selective hardening of the fastener enables mounting with application of required forces for piercing and/or plastic deformation of the metal member without undesirable deformation or distortion of the fastener. The screw thread region or zone of the fastener has a relatively lesser hardness suitable and may be pre-threaded or later threaded by engagement with a thread forming screw.