Patent ID: 11951603
Assignee: BLACK & DECKER, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 9:
10. A power tool comprising:
a tool housing including a motor housing and a handle portion;
a battery receptacle disposed at an end of the handle portion opposite the motor housing, the battery receptacle being configured to receive a battery pack;
a brushless DC (BLDC) motor including an electronically-commutated stator assembly and a rotor assembly configured to rotate relative to the stator assembly, the stator assembly comprising a stator lamination stack sized to be received within the motor housing having a circumference of approximately 140 to approximately 190 mm;
a power switching circuit including a plurality of solid-state power switches disposed on a current path from the battery pack to the motor;
an electronic controller configured to switch a switching operation of the plurality of solid-state power switches to regulate supply of electric power from the battery pack to the motor; and
a gear case mounted on the tool housing forward of the motor, the gear case supporting an output shaft rotatably driven by the motor;
wherein the handle portion is attached to a rear end of the motor housing and elongated along a longitudinal axis of the motor housing, and
wherein the motor outputs a maximum torque of at least 30 inch-pounds and a maximum speed of at least 8000 rotations-per-minute for driving the output shaft when powered by the battery pack.