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:
May. 16, 2000
Filed:
Feb. 24, 1995
Applicant:
Inventor:
Jerry W Zimmer, Saratoga, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24D / ; B24D / ;
U.S. Cl.
CPC ...
51295 ; 419 11 ; 427249 ; 75243 ;
Abstract
The invention relates to diamond coatings and the growth of diamond coatings suitable for tools, wear parts, and the like. The invention controls process conditions to produce polycrystalline coatings having progressively finer grain size in the direction of the outer surface. This enhances the wear resistance and finish characteristics of the parts and tools. In one process, chemical vapor deposition is used to grow a first region over a substrate with a plurality of nucleation sites and the first region transitions into polycrystalline diamond grains growing progressively smaller to an average grain size of less than three microns.