Insertion end for a rotary and a percussive tool
AssigneeHilti Aktiengesellschaft
InventorsWerner Kleine, Werner Britten
Life of this patent
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Abstract
An insertion end of a tool is driven along an axis at least partially rotary or percussively, which extends along the axis within a maximum guide diameter. At least one longitudinally closed locking groove and rotary driving groove is longitudinally closed at a longitudinal locking end towards the free leading end. The rotary driving groove has a groove width with at least one tangential force contact surface. At least two rotary driving grooves have a length of at least three times that of the guide diameter are arranged on the tool-side ahead of the longitudinal locking end, and have a contact length at least 1.5 times the guide diameter configured to be one fifth of the guide diameter.
Claims12
An insertion end of a tool driven along an axis in at least one of partially rotary movement and percussive movement, the insertion end comprising:
- a longitudinally extending member having:
- a longitudinal axis;
- a maximum guide diameter;
- at least one locking groove longitudinally closed at a locking end towards a free leading end;
- and
- at least one rotary driving groove having at least one tangential force contact surface;
- wherein the at least one rotary driving groove is arranged on the tool-side ahead of the locking end;
- and
- wherein the at least one rotary driving groove has a width equal to at least one fifth of the guide diameter;
- wherein a combined length of the at least one rotary driving groove and the at least one locking groove is equal to at least three times the guide diameter;
- wherein a contact length of the at least one rotary driving groove is equal to at least 1.5 times the guide diameter.
Dependencies are inferred from the claim text.