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:
Jan. 31, 2006
Filed:
Nov. 18, 2003
Nobuhiro Takano, Hitachinaka, JP;
Takao Aradachi, Hitachinaka, JP;
Toshio Mizoguchi, Hitachinaka, JP;
Eiji Nakayama, Hitachinaka, JP;
Kazuhiko Funabashi, Hitachinaka, JP;
Nobuhiro Takano, Hitachinaka, JP;
Takao Aradachi, Hitachinaka, JP;
Toshio Mizoguchi, Hitachinaka, JP;
Eiji Nakayama, Hitachinaka, JP;
Kazuhiko Funabashi, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A battery charger includes a battery voltage detector for detecting the voltage of a secondary battery and a battery temperature sensor for detecting the temperature of the secondary battery. A controller determines the voltage of the secondary battery prior to beginning the charging process based on output from the battery voltage detector. The controller also determines the charging level from among a plurality of levels that indicate how much time is required for the secondary battery to reach a full charge, based on the determined voltage of the secondary battery and output from the battery temperature sensor. A display is provided for displaying the charging level that indicates the time remaining to achieve a full charge.