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:
Mar. 04, 1986
Filed:
May. 25, 1984
John M Davenport, Lyndhurst, OH (US);
Richard L Hansler, Pepper Pike, OH (US);
Ralph M Potter, Pepper Pike, OH (US);
John M Blank, Windsor, OH (US);
Dimitri M Speros, Painesville, OH (US);
Arthur S Homa, Cleveland Hts., OH (US);
Amarendra Mishra, Lyndhurst, OH (US);
Robert A Leskovec, Richmond Hts., OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A lighting unit having a filament serving as a supplementary light source, an improved gas discharge tube serving as a main light source having improved electrodes and an improved ballast circuit operating in cooperation with the improved electrodes is disclosed. Various embodiments of the improved electrodes and various embodiments of the improved ballast circuits are disclosed. The improved ballast circuit operating in cooperation with the improved electrodes provides for thermionic arc conditions in the operation of the gas discharge tube substantially immediately after the application of voltage applied to the unit.