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. 18, 1978
Filed:
Mar. 21, 1975
Michael E Fein, Toledo, OH (US);
Charles W Salisbury, Rising Sun, OH (US);
Owens-Illinois, Inc., Toledo, OH (US);
Abstract
There is disclosed a gaseous laser device with a novel damage-resistant cathode geometry. The device comprises an envelope, a cathode volume having at least one wall, an electrically conductive cathode within the cathode volume, a lasing gaseous volume, and an anode. The cathode comprises an electrically conductive material supported by at least one cathode wall with at least one cathode wall edge being vulnerable to gas discharge deterioration. The gas discharge erosion of at least a portion of the vulnerable cathode edge is substantially prevented by the positioning of a juxtaposed protective cover plate over the cathode edge.