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. 05, 1996
Filed:
Sep. 15, 1994
Applicant:
Inventor:
Andrew S Filo, Cupertino, CA (US);
Assignees:
Dittler Brothers Incorporated, Atlanta, GA (US);
Simon Marketing, Inc., Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
2503161 ; 2503171 ; 250271 ; 273139 ; 283 85 ; 283903 ;
Abstract
A flash device has a flash tube which generates light in response to electrical energy. The amount of light emitted by the flash tube is monitored by a circuit which is connected to means for adjusting the electrical energy supplied to said flash tube when a predetermined amount of light has been emitted to thereby increase the effective life span of the flash tube and maintain intensity level of the flash tube within a given tolerance.