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. 17, 2013
Filed:
Sep. 08, 2010
Yoshio Iimura, Ibaraki, JP;
Kenro Ishimaru, Ibaraki, JP;
Kazutaka Iwata, Ibaraki, JP;
Nobuhiro Takano, Ibaraki, JP;
Yoshio Iimura, Ibaraki, JP;
Kenro Ishimaru, Ibaraki, JP;
Kazutaka Iwata, Ibaraki, JP;
Nobuhiro Takano, Ibaraki, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
According to an aspect of the present invention, there is provided a rotary striking tool includes: a motor; an oil pulse unit that is driven by the motor; an output shaft that is coupled to the oil pulse unit so that a tip tool can be attached to the output shaft; a first detection unit that detects a rotation angle of the motor and outputs a first output signal; a second detection unit that detects an impact generated at the oil pulse unit and outputs a second output signal; and a control unit that controls a rotation of the motor, wherein the control unit uses a portion of the second output signal based on the first output signal for control of the rotation of the motor.