Granted Patent B2

US 12,491,566 · App. 17/619,475 · Granted Dec 9, 2025

Inventors: Maximilian Knyrim (Ehingen, DE); Udo Hauptmann (Landsberg, DE)

Assignee: Hilti Aktiengesellschaft

B23B31/001B23B2231/28B25D2217/0069

Abstract

Claims (8)

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.

2 . The tool fitting device as recited in claim 1 wherein the dust protector including at least one further receiver and the tool cap included at least one further protrusion protruding corresponding to the further receiver.

3 . The tool fitting device as recited in claim 1 wherein the dust protector is formed at least partially from a resilient material.

4 . The tool fitting device as recited in claim 1 wherein the dust protector includes a front and a rear end, at least one dust stripper being provided at the front end and a frustoconical recess extends around the holder at the rear end.

5 . The tool fitting device as recited in claim 1 wherein when the dust protector is in a state mounted on the tool fitting device, the fixing bead is positioned at a radial spacing at a height of the depression, the radial spacing preventing the fixing bead and the holder from coming into contact with one another when vibration acts on the holder while the power tool is being used.

6 . A method for a tool fitting device as recited in claim 1 comprising fitting the dust protector in a form fitting manner on the tool cap.

7 . A dust protector for preventing the penetration of dust into the tool fitting device as recited in claim 1 , the dust protector comprising at least one protrusion corresponding to the receiver, such that the tool cap and the dust protection device are connectable together in a form-fitting manner.

8 . A chipping hammer comprising the tool fitting device as recited in claim 1 .

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (24)