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:
Jan. 04, 2005
Filed:
Feb. 27, 2003
Shigeo Matsui, Toyohashi, JP;
Masao Nakano, Jackson, MI (US);
Masahito Ooya, Anjo, JP;
Alice Schneider, Ceresco, MI (US);
Peter Alderman, Parma, MI (US);
Dean Bremke, Wellington, OH (US);
Craig A. Wightman, Elyria, OH (US);
Channing M. Suscha, Avon, OH (US);
Daniel T. Pritchard, Westlake, OH (US);
Shigeo Matsui, Toyohashi, JP;
Masao Nakano, Jackson, MI (US);
Masahito Ooya, Anjo, JP;
Alice Schneider, Ceresco, MI (US);
Peter Alderman, Parma, MI (US);
Dean Bremke, Wellington, OH (US);
Craig A. Wightman, Elyria, OH (US);
Channing M. Suscha, Avon, OH (US);
Daniel T. Pritchard, Westlake, OH (US);
Denso Corporation, Kariya, JP;
Michigan Automotive Compressor, Parma, MI (US);
A. J. Rose Mfg. Co., Avon, OH (US);
Abstract
In an electromagnetic clutch having drive and driven side clutch plates in which the drive side clutch plate is provided with a plurality of elongated holes circumferentially arranged at given intervals, a depression is formed by compressing and plastically press deforming each bridge portion positioned circumferentially between adjacent two of the elongated holes on an axial end surface of the drive side clutch plate facing the driven side clutch plate. Though tensile stress caused by belt tension is likely concentrated on the bridge portion, the depression, which causes higher hardness of the bridge portion, effectively serves to restrain occurrence of the fatigue failure.