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. 08, 2021
Filed:
Jul. 25, 2019
Milwaukee Electric Tool Corporation, Brookfield, WI (US);
William Varian, Menomonee Falls, WI (US);
Aditya Subramanian, Milwaukee, WI (US);
Ryan B. Jipp, Brookfield, WI (US);
Samuel Sheeks, Germantown, WI (US);
Milwaukee Electric Tool Corporation, Brookfield, WI (US);
Abstract
A system supplies supplemental power to a power tool. The system includes a motor coupled to an output driver, a trigger for user control of power tool operation, a sensor configured to measure an operation characteristic, a battery pack coupled to the motor, and an auxiliary energy supply. A motor controller receives a control signal from the trigger and drives the motor utilizing energy from the battery pack in response to the control signal. The motor controller also receives information from the sensor and provides additional energy to the motor from the auxiliary energy supply depending on the information from the sensor (e.g., motor speed, motor rotational position, motor current, or trigger pull percentage). The controller may connect the auxiliary energy supply in series with the battery pack to supply the supplemental power. A battery charger or energy recapture may be utilized to charge the auxiliary energy supply.