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:
Jan. 06, 2015
Filed:
May. 08, 2009
Tetsuhiro Harada, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Kazutaka Iwata, Hitachinaka, JP;
Shinki Ohtsu, Naka, JP;
Nobuhiro Takano, Hitachinaka, JP;
Tetsuhiro Harada, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Kazutaka Iwata, Hitachinaka, JP;
Shinki Ohtsu, Naka, JP;
Nobuhiro Takano, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
An oil pulse tool includes a motor, an oil pulse unit, an output shaft on which a front end tool is attached, a torque detecting sensor for detecting generation of an impact torque, and an operating portion configured to detect a time period between a first impact torque detected by the torque detecting sensor and a second impact torque detected by the torque detecting sensor. The second impact torque is smaller than the first impact torque. The operating portion carries out a notification when the time period between the first impact torque and the second impact torque is less than a predetermined evaluation value for the time period between the first impact torque and the second impact torque.