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:
Jul. 14, 1992
Filed:
Jun. 27, 1990
Applicant:
Inventors:
Jiro Nishigaki, Ibaraki, JP;
Takeshi Kawarai, Ibaraki, JP;
Seiko Nakasuna, Katsuta, JP;
Yuichi Kosukegawa, Hino, JP;
Kazuyoshi Yamada, Katsuta, JP;
Yuuhei Abe, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354484 ; 3541271 ; 3541451 ;
Abstract
A DC power source light which is mountable to and dismountable from a camera body of a video camera is supplied with power from a battery provided in said camera body so that said DC power source light is made compact and light in weight. Further, either said camera body or said DC power source light has a unit for preventing excess discharge of said battery and a unit for preventing excess current when the switch is turned on, thereby to protect said battery.