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:
Jun. 30, 2015
Filed:
Aug. 23, 2011
Applicants:
Takanori Kuno, Nagoya, JP;
Masami Wakita, Nagoya, JP;
Inventors:
Takanori Kuno, Nagoya, JP;
Masami Wakita, Nagoya, JP;
Assignee:
CHUO HATSUJO KABUSHIKI KAISHA, Nagoya-Shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16F 1/06 (2006.01); F16F 1/02 (2006.01); C21D 1/25 (2006.01); C21D 7/06 (2006.01); C21D 9/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); F16F 1/04 (2006.01);
U.S. Cl.
CPC ...
F16F 1/021 (2013.01); C21D 1/25 (2013.01); C21D 7/06 (2013.01); C21D 9/02 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01); C22C 38/00 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); F16F 1/04 (2013.01);
Abstract
A spring has a Rockwell hardness of HRC 53 to HRC 56 and a dislocation density ρ (cm) that satisfies the formula ρ≧1.4×10×H−6.7×10in the Rockwell hardness range of HRC 53 to HRC 56, in which H is the Rockwell hardness. The spring also has a prior austenite grain size number of 10 or higher.
Kuno, Takanori. (2015). Spring having excellent corrosion fatigue strength (U.S. Patent No. 9068615). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9068615
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile