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 (1) of a tool (2) driven along an axis (A) at least partially rotary or percussively, which extends along the axis (A) within a maximum guide diameter (D) and at least one axially closed locking groove (5) and rotary driving groove (6) axially closed at an axial locking end (3) towards the free leading end (4). The rotary driving groove has a groove width (B) with at least one tangential force contact surface (7). At least two rotary driving grooves (6) have a length (L) of at least three times that of the guide diameter (D) are arranged on the tool-side ahead of the axial locking end (3) and have a contact length at least 1.5 times the guide diameter (D) configured wider than a fifth of the guide diameter (D).
Claims12
An insertion end of a tool (2) driven along an axis (A) at least one of partially rotary and percussively extending along the axis (A) within a maximum guide diameter (D) and including at least one axially closed locking groove (5) axially closed at an axial locking end (3) towards a free leading end (4) and a rotary driving groove (6), said rotary driving groove (6) having a groove width (B) with at least one tangential force contact surface (7), wherein at least two rotary driving grooves (6) having a length (L) of at least three times the size of the guide diameter (D) are arranged on the tool-side ahead of the axial locking end (3) and having a contact length (K) at least 1.5 times the guide diameter (D) configured wider than a fifth of the guide diameter (D).
Dependencies are inferred from the claim text.