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. 26, 1977
Filed:
Oct. 10, 1975
Applicant:
Inventors:
Emery G Audesse, Williamsport, PA (US);
Donald E Armstrong, Williamsport, PA (US);
Assignee:
GTE Sylvania Incorporated, Montoursville, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21K / ;
U.S. Cl.
CPC ...
431 93 ;
Abstract
A photoflash lamp having a borosilicate glass envelope with a relatively high coefficient of thermal expansion and a depending metal primer tube, or set of lead-in wires, sealed to the glass envelope. The envelope maintains or enhances strong containment characteristics while at the same time economically providing an improved glass-to-metal seal wherein the glass is in radial compression.