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. 19, 1978
Filed:
Feb. 10, 1976
Applicant:
Inventor:
Fritz Straumann, Waldenburg, CH;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148 / ; 148 131 ; 148 203 ; 148 315 ; 148 325 ; 148158 ; 148162 ;
Abstract
A bearing part comprises an age hardened cobalt alloy having a bearing surface exposed to bearing friction provided with a boride covering layer. The bearing part is manufactured by forming a ductile age hardening alloy of cobalt and ageing it by heat treatment and meanwhile depositing a layer of boride onto the bearing portion of the alloy at a temperature of from between 550.degree. to 900.degree. C by diffusion from a vapor phase or a solid phase.