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:
Jul. 26, 1988
Filed:
May. 12, 1987
Stephen E Sampayan, Austin, TX (US);
Monroe L King, Port Lavaca, TX (US);
Robert A Moore, Austin, TX (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An ion source (10) of the side-extraction hot cathode type in which the inherent drift of electrons toward the positive side of the cathode is minimized by the addition of auxiliary electrodes (31, 32) which surround the cathode (14) at the ends of the anode (12). The electrodes are electrically isolated from the cathode and anode, and various means are provided to apply a potentials to the electrodes, including interconnecting the electrodes, cross-connecting the electrodes to opposite ends of the cathode, and biasing the electrodes at fixed potentials with respect to the cathode, anode or ground.