Sealing lip on tool fitting
AssigneeHilti Aktiengesellschaft
InventorsUdo HAUPTMANN, Ulrich MANDEL
Life of this patent
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Abstract
Tool fitting device for a power tool, in particular a chipping hammer, including—a holding device for receiving and holding a tool shank, a retention element extending at least around a section or sections of the holding device, and a dust protection device for preventing the penetration of dust into the tool fitting device. The dust protection device includes at least one first dust stripping element, at least one fixing bead, and at least one sealing lip element, wherein the sealing lip element is positioned in front of the retention element in the axial direction. Dust protection device for use in a tool fitting device.
Claims10
1-7. (canceled)
8:
- A tool fitting device for a power tool, the tool fitting device comprising:
- a holder for receiving and holding a tool shank;
- a retainer extending at least around a section or sections of the holder;
- and
- a dust protector for preventing the penetration of dust into the tool fitting device, the dust protector including at least one first dust stripper, at least one fixing bead, and at least one sealing lip, the sealing lip element being positioned in front of the retainer in the axial direction.
9:
- The tool fitting device as recited in claim 8 further comprising a second dust stripper, the first and the second dust strippers being arranged at a distance from one another along an axial longitudinal axis.
10:
- The tool fitting device as recited in claim 8 wherein the dust protector and the holder are arranged relative to one another in such a way that a distance along an axial longitudinal axis is provided between one end of the at least one dust stripper and one end of the holder.
11:
- The tool fitting device as recited in claim 8 wherein the sealing lip includes a cross-sectional area tapering in the radial direction.
12:
- The tool fitting device as recited in claim 8 wherein the sealing lip includes a concave side face directed toward the retainer.
13:
- The tool fitting device as recited in claim 8 wherein the fixing bead has a trapezoidal cross-sectional area.
14:
- A method for a tool fitting device as recited in claim 8 comprising fitting the dust protector onto the holder.
15:
- A dust protector for preventing the penetration of dust into the tool fitting device, the dust protector comprising at least one first dust stripper, at least one fixing bead, and at least one sealing lip, the sealing lip element being positioned in front of the retainer in the axial direction.
16:
- A chipping hammer comprising the tool fitting device as recited in claim 8.