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:
Nov. 29, 2005
Filed:
Feb. 04, 2004
Manabu Tokunaga, Anjo, JP;
Goshi Ishikawa, Anjo, JP;
Manabu Tokunaga, Anjo, JP;
Goshi Ishikawa, Anjo, JP;
Makita Corporation, Anjo, JP;
Abstract
Power tool () may include a motor and oil pulse unit () that generates an elevated torque. Oil pulse unit () may be coupled to the motor and have output shaft (). When load acting on output shaft () is less than a predetermined value, rotating torque generated by the motor is directly transmitted to output shaft (). When the load acting on output shaft () exceeds the predetermined value, an elevated torque is generated by oil pulse unit () and applied to output shaft (). Output shaft () may be connected to load shaft (). A socket may be attached to the distal end of load shaft (). Power tool () may further include detecting device () for detecting change in rotational angle of output shaft () and the direction of rotation thereof, and a control device. The detecting device () may output signals corresponding to a state of output shaft () to the control device. The control device may store the state of output shaft () at predetermined interval. Preferably, the control device may further determine a generating time, at which oil pulse unit () generates the elevated torque, based upon the state of output shaft ().