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. 28, 1982
Filed:
Oct. 03, 1979
Applicant:
Inventors:
Jean-Claude Depoisier, Paris, FR;
Leonce E Rogier, Saint-Denis, FR;
Assignee:
Societe Anonyme Francaise du Ferodo, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ; F16D / ;
U.S. Cl.
CPC ...
428544 ; 1882 / ;
Abstract
A method of providing an improved friction surface and a friction element having such an improved friction surface are disclosed. A surface of a metallic friction element, e.g. a brake pad or a brake disc or drum, is metal-sprayed with a metallic substance which defines asperities the average roughness Ra of which ranges between 3 and 60 microns. Preferably, at least some of the asperities have heights ranging between 20 and 40 microns for a base width between 0.5 and 1 mm.