US 12,220,804 B2
Multispeed power tool
Brent A. Kuehne, Red Lion, PA (US)
Assigned to Black & Decker Inc., New Britain, CT (US)
Filed by Black & Decker Inc., New Britain, CT (US)
Filed on Oct. 5, 2022, as Appl. No. 17/960,505.
Application 17/960,505 is a continuation of application No. 16/585,152, filed on Sep. 27, 2019, granted, now 11,491,632.
Application 16/585,152 is a continuation of application No. 15/337,236, filed on Oct. 28, 2016, granted, now 10,464,201, issued on Nov. 5, 2019.
Application 15/337,236 is a continuation of application No. 13/220,164, filed on Aug. 29, 2011, granted, now 9,481,080, issued on Nov. 1, 2016.
Claims priority of provisional application 61/513,206, filed on Jul. 29, 2011.
Prior Publication US 2023/0035085 A1, Feb. 2, 2023
Int. Cl. B25F 5/00 (2006.01); B23B 45/00 (2006.01)
CPC B25F 5/001 (2013.01) [B23B 45/008 (2013.01); B23B 2260/044 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A multi-speed power tool comprising:
a housing assembly;
a motor;
a trigger assembly;
a clutch;
an output spindle;
a gear case;
a reduction gearset, wherein the reduction gearset is selectively operable in a first overall gear ratio and a second overall gear ratio;
a user-operable speed selector axially movable between a first position and a second position to cause the reduction gearset to operate in one of the first overall gear ratio and the second overall gear ratio;
wherein the reduction gearset comprises a locking member and a movable member;
wherein the locking member comprises a plurality of locking projections;
wherein the movable member comprises a plurality of locking teeth; and
wherein the movable member selectively non-rotatably engages the locking member through engagement of the plurality of locking teeth with the plurality of locking projections;
wherein the reduction gearset operates in one of the first overall gear ratio and the second overall gear ratio when the movable member is non-rotatably engaged with the locking member and wherein the reduction gearset operates in the other of the first overall gear ratio and the second overall gear ratio when the movable member is not non-rotatably engaged with the locking member;
wherein the gear case comprises a front case portion and a rear case portion that abuts the front case portion;
wherein the gear case comprises a non-circular circumferentially extending groove; and
wherein the locking member is held in the gear case in the non-circular circumferentially extending groove in a manner that restricts relative rotation and axial movement of the locking member with respect to the gear case.