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. 18, 2020
Filed:
Jun. 27, 2016
Hitachi Koki Co., Ltd., Tokyo, JP;
Takuya Yoshinari, Hitachinaka, JP;
Yoshikazu Kawano, Hitachinaka, JP;
Kazuhiko Funabashi, Hitachinaka, JP;
Toshiaki Koizumi, Hitachinaka, JP;
Koki Holdings Co., Ltd., Tokyo, JP;
Abstract
In order to provide a tool in which a motor is assuredly prevented from being restarted when power is turned on again after a power supply interruption due to a contingency, a disk grinderincludes a motorand a switchswitchable between an ON position at which the motor is driven by an operator and an OFF position at which the motor is stopped. Furthermore, first and second restart prevention meansare provided to disable driving of the motor until the switch is turned again to the ON position when power supplied to the motorfalls below or under a predetermined value.