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:
Apr. 26, 2011
Filed:
Oct. 22, 2010
Kazuhiko Funabashi, Hitachinaka, JP;
Shinji Watanabe, Hitachinaka, JP;
Eiji Nakayama, Hitachinaka, JP;
Kazuhiko Funabashi, Hitachinaka, JP;
Shinji Watanabe, Hitachinaka, JP;
Eiji Nakayama, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A power toolis connected to a battery packincluding an overcurrent detectorwhich detects overcurrent of a battery moduleand outputs a detection signal, and an overdischarge detectorwhich detects overdischarge of the battery moduleand outputs a detection signal. The power toolincludes a motorwhich is driven by electric power supplied from the battery pack, a trigger switchfor setting the power supply from the battery packto the motorin ON/OFF state, and an FETwhich sets the power supply to the motorin ON/OFF state on the basis of the detection signal from the overcurrent detectoror the overdischarge detector