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:
Apr. 06, 1993
Filed:
Jun. 07, 1991
Applicant:
Inventor:
Carol M Ford, Columbia Heights, MN (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 87 ; 372 94 ; 372 55 ; 356350 ;
Abstract
A cathode for use in a gas discharge device that is resistant to sputtering and therefore extends the life of the gas discharge device. The configuration of the cathode effectively uses the hollow cathode effect allowing the laser to operate with a lower excitation voltage. That configuration involves a body having a cavity therein and an entrance port to the cavity. Within the cavity there exists a protrusion extending from an interior surface toward the entrance port.