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:
Jun. 04, 2019
Filed:
Aug. 15, 2016
Applicant:
Apex Mfg. Co., Ltd., Taichung, TW;
Inventor:
Chih-Wei Hu, Taichung, TW;
Assignee:
APEX MFG. CO., LTD., Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 25/10 (2006.01); B25B 21/02 (2006.01); B25B 23/147 (2006.01); H02P 25/14 (2006.01);
U.S. Cl.
CPC ...
B25B 23/1475 (2013.01); B25B 21/02 (2013.01);
Abstract
Torsion control device and method for an electric impact power tool are provided. The electric impact power tool includes a motor, and the torsion control device detects an actual rotational speed of the motor to make the electric impact power tool output a preset torsion value accurately. In the torsion control method, a compensating time is calculated according to a difference between the actual rotational speed value of the motor and a preset rotational speed value.