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:
May. 10, 1988
Filed:
Jan. 22, 1986
Applicant:
Inventor:
James R Royer, Mount Joy, PA (US);
Assignee:
Raymark Industries, Inc., Manheim, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
523150 ; 1921 / ; 428283 ;
Abstract
Blister formation in extrusion molded, non-asbestos friction elements such as clutch facings containing substantially non-porous fibers is substantially eliminated by the inclusion in the extrusible plastic mix of which the friction elements are made of a small amount of diatomite having a particle size including agglomerates such that at least 10 percent by weight thereof is maintained on a 325 mesh screen.