US 12,257,676 B2
Power tool with threaded spindle drive
Florian Schmid, Buchs (CH); and Albert Binder, Buchs (CH)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 18/035,413
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Sep. 13, 2021, PCT No. PCT/EP2021/075036
§ 371(c)(1), (2) Date May 4, 2023,
PCT Pub. No. WO2022/111875, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 20210196 (EP), filed on Nov. 27, 2020; and application No. 21156580 (EP), filed on Feb. 11, 2021.
Prior Publication US 2023/0405779 A1, Dec. 21, 2023
Int. Cl. B25B 27/00 (2006.01); B21D 39/04 (2006.01); B25B 27/10 (2006.01)
CPC B25B 27/10 (2013.01) [B21D 39/046 (2013.01); B21D 39/048 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power tool comprising a drive, an output shaft, a threaded spindle drive and a linear actuator, wherein a torque generated by the drive is transmissible via the output shaft, and the threaded spindle drive connected to the output shaft, to the linear actuator, wherein
the threaded spindle drive has an inner threaded spindle part with an external thread and an outer threaded spindle part with an internal thread, wherein the internal thread interacts with the external thread via at least one bearing roller, and the at least one bearing roller has at least one radially encircling channel by which the bearing roller engages in each case into the external thread and into the internal thread.