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:
Feb. 24, 2004
Filed:
Jul. 09, 2001
Applicant:
Inventors:
Jeffery L. Henderson, Somerville, AL (US);
Hong Moon, Arab, AL (US);
Mark Wardrup, Attalla, AL (US);
Ivan Reede, Dollard des Ormeaux, CA;
Assignee:
Tyco Electronics Corporation, Middletown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 5/34 ;
U.S. Cl.
CPC ...
H02P 5/34 ;
Abstract
A control system for driving a power tool is provided comprising a power source, a motor adapted to drive a shaft, a power switching unit interconnecting the power source and the motor, and a controller. The power switching unit applying a pulse width modulated (PWM) drive signal from the power source to the motor. The controller monitoring at least one electrical characteristic of at least one of the power source, motor and power switching unit and adjusting the operating duty cycle of the PWM drive signal based on the electrical characteristics.
Published as: