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:
Apr. 14, 2015
Filed:
Jun. 22, 2007
Applicants:
Bernfried Hesselmann, Wenden, DE;
Sven Roth, Weitefeld, DE;
Peter Buchner, Neunkhausen, DE;
Andreas Rinsdorf, Freudenberg, DE;
Thomas Muhr, Attendorn, DE;
Inventors:
Bernfried Hesselmann, Wenden, DE;
Sven Roth, Weitefeld, DE;
Peter Buchner, Neunkhausen, DE;
Andreas Rinsdorf, Freudenberg, DE;
Thomas Muhr, Attendorn, DE;
Assignee:
Muhr und Bender KG, Attendorn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 7/06 (2006.01); F16F 1/32 (2006.01); B23P 9/02 (2006.01); B24C 1/10 (2006.01); C21D 1/78 (2006.01); C21D 9/02 (2006.01);
U.S. Cl.
CPC ...
F16F 1/32 (2013.01); B23P 9/02 (2013.01); B24C 1/10 (2013.01); C21D 1/78 (2013.01); C21D 7/06 (2013.01); C21D 9/02 (2013.01); F16F 2226/02 (2013.01);
Abstract
A process for producing plate springs or undulating springs wherein surface regions which are subjected to tensile stresses when the spring is under load are provided with an internal compressive stress in the boundary layer, wherein said surface regions are rollingly compressed by a ball or roller or subjected to tensile stress and compressed by shot peening.