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:
Sep. 17, 1991
Filed:
Jul. 20, 1990
Applicant:
Inventor:
Marc A Yesnik, Chicago, IL (US);
Assignee:
Borg-Warner Automotive, Inc., Sterling Heights, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
192 7014 ; 1882 / ; 1921 / ;
Abstract
An improvement in a torsional coupling in which clutch separator plates (24) are interleaved between clutch friction plates (16) having friction linings (18) on the opposite surfaces thereof to provide an increased coefficient of friction without substantially increasing the wear of the friction lining of the clutch plates during operation of the clutch or brake. The separator plates (24) are formed of a solid ceramic material (24a) or of a steel plate (46) which is coated with a thin layer of the ceramic material (48). Suitable ceramics include silicon nitride, aluminum oxide and zirconium oxide.