Patent ID: 10220493

Abstract:
A power tool is provided that includes a motor housing, an output head, a pinion, at least one pin, and at least first and second rings. The output head includes a rotatable output spindle and extends from the motor housing which extends longitudinally along a first axis. The pinion is located in the output head, is coupled to a drive force, and rotates about the first axis to rotate the rotatable output shaft. The at least one pin is located in the output head. The first ring is coupled to the pinion and rotatable about the first axis with the pinion. The second ring engages, and is movable longitudinally along the first axis relative to, the at least one pin. The second ring is not rotatable about the first axis. Rather, the second ring is movable toward and away from the first ring along the first axis, and selectively engagable with the first ring. Engagement between the first and second rings prevents the first ring from rotating with respect to the first axis which prevents the pinion from rotating which prevents the rotatable output spindle from rotating.