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:
Jul. 13, 2021
Filed:
Sep. 23, 2019
Black & Decker Inc., New Britain, CT (US);
John D. Cox, Lutherville, MD (US);
Michael K. Forster, White Hall, MD (US);
John C. Vanko, Timonium, MD (US);
Daniel J. White, Baltimore, MD (US);
Bhanuprasad V. Gorti, Perry Hall, MD (US);
Matthew J. Velderman, Baltimore, MD (US);
Andrew E. Seman, Jr., Pylesville, MD (US);
Black & Decker Inc., New Britain, CT (US);
Abstract
A power tool is provided including a power supply interface receiving a medium-voltage-rated removable battery pack having a maximum rated voltage in the range of 40 to 80 volts, and a brushless direct current (BLDC) motor. The motor includes a rotor and a stator having at least three stator windings corresponding to at least three phases of the motor, the rotor being moveable by the stator when the stator windings are appropriately energized within the corresponding phases, each phase being characterized by a corresponding voltage waveform energizing the corresponding stator winding. A multi-phase inverter bridge circuit is disposed between the power supply interface and the motor, and a controller is configured to output drive signals to the inverter bridge circuit to control flow of current from the battery pack to the motor such that the motor produces a maximum power output of at least 2500 watts.