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:
Oct. 17, 2000
Filed:
Mar. 16, 1998
Isao Hayashi, Tokyo, JP;
Takashi Narasawa, Yokohama, JP;
Akira Fukushima, Yokohama, JP;
Tsutomu Nishikawa, Chigasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A charging device includes a charging circuit for performing a charging action on a secondary battery, a power supplying circuit for supplying power to a load device connected to the charging device, a mode change-over circuit for selection from between a charge mode in which the charging action on the secondary battery is performed and a discharge mode in which power is supplied to the load device, and a control circuit for, when the charge mode is selected by the mode change-over circuit, causing the charging circuit to perform the charging action on the secondary battery and for, when the discharge mode is selected by the mode change-over circuit, causing the power supplying circuit to supply power from the secondary battery to the load device in a state in which the secondary battery is mounted on the charging device.