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.

Date of Patent:
Feb. 08, 2011

Filed:

Aug. 26, 2008
Applicants:

Gianni Borinato, Vicenza, IT;

Kelvin Wong, Suzhou, CN;

Shisong Zhang, Suzhou, CN;

Paolo Andriolo, Vicenza, IT;

Warren Brown, Mount Evelyn, AU;

Hongfeng Zhong, Suzhou, CN;

Fangshi Liu, Suzhou, CN;

Chengzhong Chen, Suzhou, CN;

Inventors:

Gianni Borinato, Vicenza, IT;

Kelvin Wong, Suzhou, CN;

Shisong Zhang, Suzhou, CN;

Paolo Andriolo, Vicenza, IT;

Warren Brown, Mount Evelyn, AU;

Hongfeng Zhong, Suzhou, CN;

Fangshi Liu, Suzhou, CN;

Chengzhong Chen, Suzhou, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B 45/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A power tool includes a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The power tool includes a signal generator and a control system electrically coupled to the signal generator and operatively engaged with the gear transmission mechanism such that when the signal generator is manually activated, an electric signal is generated and transmitted to the control system to cause the gear transmission mechanism to vary the gear reduction ratio.


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