US 12,491,566 B2
Dust protection cap with vibration decoupling
Maximilian Knyrim, Ehingen (DE); and Udo Hauptmann, Landsberg (DE)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 17/619,475
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Jul. 1, 2020, PCT No. PCT/EP2020/068497
§ 371(c)(1), (2) Date Dec. 15, 2021,
PCT Pub. No. WO2021/004849, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 19185765 (EP), filed on Jul. 11, 2019.
Prior Publication US 2022/0097147 A1, Mar. 31, 2022
Int. Cl. B23B 31/00 (2006.01)
CPC B23B 31/001 (2013.01) [B23B 2231/28 (2013.01); B25D 2217/0069 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A tool fitting device for a power tool, the tool fitting device comprising: a holder for receiving and holding a tool shank; a tool cap; and a dust protector for preventing the penetration of dust into the tool fitting device, the tool cap including at least one receiver and the dust protector including at least one protrusion corresponding to the receiver, such that the tool cap and the dust protector are connectable together in a form-fitting manner; wherein the dust protector includes an annular fixing bead and the holder includes a depression corresponding to the fixing bead for axially holding the dust protector on the holder; wherein a radial spacing or an axial spacing is provided between the dust protector and the holder, the dust protector always being separated or decoupled from the holder so that no vibration or oscillation is transmitted from the holder to the dust protector.