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, 1998
Filed:
Oct. 18, 1996
Yasuhiro Nishitani, Saitama, JP;
Yoshihiro Fujita, Saitama, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
In electric-supply equipment of the present invention, a main battery supplies electric power to equipment such as a camera, and an auxiliary battery such as an AA battery is used as a charging power source in order to supply electric energy to the main battery in a charging circuit. Thereby, if the power source (the auxiliary battery) has been consumed, only the auxiliary battery, which is inexpensive and easy to get, is replaced. In particular, a metal lithium secondary battery is used as the main battery, so that the main battery can supply a large amount of high current to the equipment such as a camera. Furthermore, the metal lithium secondary battery spontaneously discharges only a small amount of electricity, so that the battery need not be replaced even after a long period of non-use, and the equipment can be used anytime.