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:
Aug. 08, 1978
Filed:
Jun. 30, 1976
Applicant:
Inventor:
Robert J Cosco, Amesbury, MA (US);
Assignee:
GTE Sylvania Incorporated, Danvers, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ; H02H / ;
U.S. Cl.
CPC ...
315125 ; 3152 / ; 328 10 ; 361 56 ;
Abstract
A flashtube has an hermetically sealed glass envelope containing an inert gas and a pair of electrodes between which an arc discharge path is defined during lamp operation, and an insulated external trigger wire at the outer surface of the envelope. The trigger circuit includes a safety feature in the form of a sealed spaced gap to prevent an arc from occurring in the flashtube in the event that the flashtube envelope is cracked or broken.