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:
Feb. 07, 1995
Filed:
Jan. 21, 1993
Applicant:
Inventors:
Rainer Buhl, Sargans, CH;
Christoph Hasler, Azmoos, CH;
Assignee:
Balzers AG, , LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
20419238 ; 20429841 ; 427580 ;
Abstract
A shield to limit an electric arc discharge between an anode and a cathode to a designated portion of the cathode surface is fashioned in the shape of a limiting ring with good electrically conducting surface, e.g., copper or aluminum, surrounding this surface. Application of the invention, especially with heavy current arc discharges causes the tracing point of the discharge to move stochastically back and forth on the cathode.