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. 12, 1988
Filed:
Jun. 19, 1986
Applicant:
Inventors:
George K Danko, Moreland Hills, OH (US);
Ronald J Olwert, Concord Township, Lake County, OH (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
445 22 ; 313569 ; 313579 ; 313634 ; 445 27 ;
Abstract
Incandescent lamps having an improved light source are disclosed. The light source contains a halogen compound along with a fill-gas at a pressure above atmospheric. The light source has an oblate ellipsoidal shape so as to obtain a desired temperature gradient which reduces typically experienced 'cold spots' that detrimentally contribute to the condensation of halogen compounds within the light source which would otherwise reduce the desired light output of the light source throughout life. Also disclosed is a method of manufacturing the light source.