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. 06, 1988
Filed:
Jan. 20, 1987
Applicant:
Inventors:
Norbert Apfel, Waiblingen, DE;
Wilfried Noll, Waiblingen, DE;
Hans-Peter Stehle, Waiblingen, DE;
Horst Doren, Titz-Rodingen, DE;
Klaus-Dieter Wernicke, Ratingen, DE;
Assignee:
Andreas Stihl, Waiblingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27B / ;
U.S. Cl.
CPC ...
30383 ; 76 2 / ; 420436 ;
Abstract
A cobalt base alloy includes the alloy elements of nickel, chromium, tungsten, silicon and carbon with the nickel content being at least 25 percent by weight. The cobalt base alloy is applied as a coating material for guide bars of saw chains. The alloy has a high hardness with low brittleness by means of which an improved resistance to wear is achieved.