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.

Date of Patent:
Sep. 01, 1981

Filed:

May. 16, 1979
Applicant:
Inventors:

Roy R Wiseman, Jr, Akron, OH (US);

James J Kovac, Akron, OH (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
188 715 ; 188 716 ; 188 732 ; 1882 / ; 1882 / ; 1882 / ; 192 7014 ; 1921 / ; 1921 / ;
Abstract

Brake discs of carbon or other porous material in which the opposed faces of the discs are provided with shallow grooves extending between the inner and outer circumferences to vent steam and other gases generated during braking. The grooves of the stationary discs may be at different angles relative to the radii than are the grooves of the rotating discs.


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