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. 31, 1976
Filed:
Sep. 19, 1975
Applicant:
Inventor:
Kouji Kajitani, Hirakata, JA;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
192 / ; 267161 ;
Abstract
This invention relates to a diaphragm spring serving as a clutch spring for applying engaging force to the clutch, in which a shot-peened layer is provided only on a concave rear surface of said diaphragm spring, especially only on a surface of the pressure plate side of a peripheral annulus which is subjected to tensile stress in engaging the clutch. According to this invention, an early decrease (yielding) in spring force of said diaphragm spring can be avoided.