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. 29, 1985
Filed:
May. 02, 1983
Applicant:
Inventors:
Stephen F Kimball, No. Andover, MA (US);
Emery G Audesse, Beverly, MA (US);
Robert M Griffin, So. Hamilton, MA (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01K / ;
U.S. Cl.
CPC ...
313579 ; 313557 ;
Abstract
This invention provides a tungsten-halogen lamp having a thin-wire filament and a hydrogen-impervious envelope. Containment of hydrogen within the lamp envelope suppresses tungsten corrosion of the filament and prevents early termination of the lamp. In the preferred embodiment, an aluminosilicate glass is employed as the hydrogen-impervious envelope material. This invention overcomes a substantial impediment in the development of a feasible tungsten-halogen lamp as a replacement for the standard Edison-type lamp for general lighting purposes.