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. 06, 1981
Filed:
Jun. 18, 1979
Applicant:
Inventor:
Alan S Penfold, Playa del Rey, CA (US);
Assignee:
Telic Corporation, Santa Monica, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
204298 ; 2041 / ;
Abstract
Apparatus for generating a uniform magnetic field in a cylindrical oriented post cathode. The vacuum chamber has a cylindrical wall of non-magnetic material and end walls of magnetic material. An array of bars of magnetic material is disposed to surround the vacuum chamber and to form a magnetic circuit including the end walls of the chamber and a region extending through and adjacent to the post cathode. Solenoid windings are positioned between the cylindrical wall of the chamber and the bars of magnetic material.