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:
Oct. 28, 1980
Filed:
Jul. 11, 1978
Applicant:
Inventor:
Ranbir S Bhalla, West Paterson, NJ (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313220 ; 313221 ;
Abstract
A high-pressure sodium vapor discharge lamp of improved color including in combination a specified arc length to power input, a predetermined sodium to mercury amalgam ratio, heat shields surrounding each end of the arc tube and an improved end cap to arc tube seal, which combine to increase the sodium vapor pressure and provide a lamp of greatly improved color.