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:
Dec. 30, 2008
Filed:
Sep. 13, 2007
Yukihiro Shima, Ibaraki, JP;
Masahiro Inaniwa, Ibaraki, JP;
Hiroyuki Oda, Ibaraki, JP;
Takashi Ueda, Ibaraki, JP;
Yoshihiro Nakano, Ibaraki, JP;
Yukihiro Shima, Ibaraki, JP;
Masahiro Inaniwa, Ibaraki, JP;
Hiroyuki Oda, Ibaraki, JP;
Takashi Ueda, Ibaraki, JP;
Yoshihiro Nakano, Ibaraki, JP;
Hitachi Koko Co., Ltd., Tokyo, JP;
Abstract
An electric driving machine has a motor for rotating a flywheel, power transmission for converting rotational drive force of the flywheel into rectilinear drive force and transmitting the rectilinear drive force to an actuator which fires a fastener, and engagement/disengagement arrangement which transmits the rotational drive force of the flywheel to a driver blade of interrupts transmission of the rotational drive force. The electric driving machine is provided with a second switching element connected in series with the engagement/disengagement arrangement and a third switching element connected in shunt with the engagement/disengagement arrangement. When a push lever switch is in an OFF position where driving of a fastener is not ready, the third switching element is held in an ON state.