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:
Aug. 25, 2015
Filed:
Jul. 11, 2012
Applicants:
Tetsuya Katsuta, Chiba, JP;
Yasuhiro Mitsui, Chiba, JP;
Inventors:
Tetsuya Katsuta, Chiba, JP;
Yasuhiro Mitsui, Chiba, JP;
Assignee:
MITSUBISHI STEEL MFG. CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 27/02 (2006.01); F16F 3/02 (2006.01); F16C 29/00 (2006.01); H04M 1/02 (2006.01);
U.S. Cl.
CPC ...
F16C 29/002 (2013.01); F16F 3/02 (2013.01); F16F 3/023 (2013.01); H04M 1/0237 (2013.01);
Abstract
The present invention relates to a spring unit whose spring constant can be easily changed. The spring unit includes a plurality of wire springs each including a bent part formed in the middle of wire by bending, extending parts extending from the bent part, and end parts formed at ends of the extending parts. The wire springs are arranged side by side, and a deformed part protruding in a direction of arrangement of the wire springs is formed in one or more of the extending parts.