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:
Jan. 24, 1995
Filed:
Mar. 18, 1993
Applicant:
Inventors:
Ludwig Finkbeiner, Walheim, DE;
Manfred Wilhelm, Nussdorf, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
428552 ; 428551 ; 428553 ; 428554 ;
Abstract
A carrier material for a tool for treating surfaces is composed of a metal alloy with a homogeneous, fine-grained structure. The carrier material is treated in a material removing manner to obtain a predetermined size and a roughness. Then an activating layer, a pure metal layer and a transition layer composed for example from nitrogen are applied, so that the outermost region of the tool contains a non-metallic hard layer. The non-metallic hard layer has a high hardness and elasticity so that the tool is suitable especially for treating surfaces of structural parts.