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:
Aug. 23, 2016
Filed:
Jan. 06, 2014
Tamura Corporation, Tokyo, JP;
Makita Corporation, Anjo-shi, Aichi, JP;
Koji Imamura, Toyonaka, JP;
Takeshi Yamamoto, Sakai, JP;
Yasuhiro Tabuchi, Nagoya, JP;
Makihiro Kobayashi, Toyoake, JP;
TAMURA CORPORATION, Tokyo, JP;
MAKITA CORPORATION, Anjo-Shi, JP;
Abstract
A charging apparatus for a secondary battery comprises: a power supply circuit connected to a primary windingof a transformer T; a main windingand a sub windingconnected to a secondary side of the transformer T; a charging circuitconnected to the main winding, the charging circuitsupplying power to a battery packto be charged; and a control circuitconnected to the sub winding, the control circuitcontrolling the charging circuit, wherein the charging circuitcomprises a LEDindicating a standby state or a charge completion state, the LEDbeing lighted at light-load time of the charging circuitbased on a command of the control circuit