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:
Feb. 07, 1984
Filed:
May. 28, 1982
Applicant:
Inventor:
Kouichi Ohmori, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
3152 / ; 315135 ; 35412712 ; 3541451 ;
Abstract
In the disclosed device, a DC-DC converter boosts the output of a battery to charge a capacitor that stores electrical energy to be converted into light energy and turns on a neon tube when the capacitor voltage reaches a first predetermined value. A control arrangement disables the converter in response to the neon tube turning on the re-enables the converter when the capacitor charge drops to the first predetermined level after the neon tube turns on.