Chuck
AssigneeHilti Aktiengesellschaft
InventorsWerner Kleine, Werner Britten
Life of this patent
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Abstract
A chuck includes a hollow cylindrical sleeve (3) having at least two, opposite, rotation transmitting strip-shaped webs (4a, 4b) projecting radially inward, and at least one locking member (2) radially displaceable through a radial opening formed in the receiving sleeve, with the receiving side end of the rotation transmitting webs (4a, 4b) being spaced from a receiving side edge of the radial opening (6) by a distance (X) 1.5 times greater than the guide diameter (D) of the receiving sleeve (3).
Claims2
A chuck, comprising a hollow cylindrical receiving sleeve (3) having a guide diameter (D) and at least two, opposite, rotation transmitting, strip-shaped webs (4a, 4b) projecting radially inward and having contact surfaces (5);
- and at least one locking member (2) radially displaceable through a radial opening formed in the receiving sleeve, a receiving side end of the rotation transmitting webs (4a, 4b) being spaced from a receiving side edge of the radial opening (6) by a distance (X) 1.5 times greater than the guide diameter (D), wherein the sum of contact surfaces (5) of the rotation transmitting webs (4a, 4b) is determined by an equation:
- Σ=2LH=2(3D)(0.15D)=0.9D^2
- wherein:
- L—is a length of a rotation transmitting web;
- H—is a height of the rotation transmitting web;
- and
- D—is the guide diameter of the receiving sleeve.
Dependencies are inferred from the claim text.