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. 10, 1981
Filed:
Sep. 29, 1978
Applicant:
Inventors:
Masahiro Kawasaki, Tokyo, JP;
Yoshio Sawada, Tokyo, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307293 ; 307294 ; 354 51 ; 354 / ; 328 77 ; 328146 ;
Abstract
A power supply maintaining circuit in a camera having an electric source, and a power switch provided between the electric source and a shutter control circuit or a display circuit. The power supply maintaining circuit comprises a timer circuit connected in parallel to the shutter control or display circuit and a transistor is connected in parallel to the power switch. The transistor is controlled by the timer circuit.