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:
Dec. 28, 1993
Filed:
Jul. 29, 1992
Applicant:
Inventors:
Harold R Kaufman, Laporte, CO (US);
Raymond S Robinson, Fort Collins, CO (US);
Assignee:
Kaufman & Robinson, Inc., Fort Collins, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05H / ;
U.S. Cl.
CPC ...
31511141 ; 31511121 ; 31511131 ; 31323131 ;
Abstract
A pair of dissimilarly-sized electrodes are driven by a radiofrequency source to create a plasma. A magnetic field is oriented to be parallel to a surface area on the smaller electrode. The field strength increases to either side of that smaller electrode. As shown, ions are electrostatically accelerated out of the plasma, but they instead may be accelerated magnetically, electrons may in the alternative be extracted or there may be no accelerating mechanism.