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. 30, 1976
Filed:
Jul. 10, 1974
Applicant:
Inventors:
Andre C Bouchard, Peabody, MA (US);
John F Waymouth, Marblehead, MA (US);
Thomas J Sentementes, Wakefield, MA (US);
Naila Saba Jirmanus, Somerville, MA (US);
Assignee:
GTE Sylvania Incorporated, Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21K / ;
U.S. Cl.
CPC ...
431 94 ; 431 / ;
Abstract
A photoflash lamp having a glass envelope with an inner layer or coating of a material selected to have a low thermal conductivity and diffusivity for minimizing heat losses during the collision of molten droplets of combustible metal with the inner wall of the envelope during flashing. In this manner, radiative energy losses resulting from the droplet-wall collisions are minimized and light output is improved.