Drilling and chipping tool
AssigneeHilti Aktiengesellschaft
InventorVinko Pacher
Life of this patent
Estimating the term…
Abstract
A drilling and chipping tool (1) has a holder (3) detachably connectable on a neck (2) on the tool (1) and the holder (3) includes a cap (4) arranged to fit over the neck (2). The tool (1) has a long direction and the cap (4) has teeth (5, 5a) on an interior surface detachably engageable with teeth (2a) on an exterior surface of the neck (2). A part (5a) of the interior teeth (5, 5a) on the cap (4) is offsettable relative to the remaining teeth (5) on the cap (4) and is engageable into at least one recess (2b) in the region of the teeth (2a) on the neck, whereby a tolerance free connection is established between the holder (3) and the neck (2) of the tool (1). The holder (3) can be attached and detached from the neck (2) without the use of any other tools.
Claims6
Drilling and chipping tool having a leading end and a trailing end and a long direction extending in the trailing end - leading end direction, a holder (3, 13) for a tool bit detachably mountable on a neck (2, 12) at the leading end of said tool (1), said holder (3, 13) includes a cap (4, 14) mountable over the neck (2, 12), wherein the improvement comprises that said cap (4, 14) has an annular interior surface with an axis extending in the long direction and with spaced teeth (5, 5a, 15, 15a) formed on and extending inwardly from the interior surface with said teeth extending in the long direction, said neck (2, 12) has an exterior surface with spaced teeth (2a, 12a) thereon extending in the long direction and being complementary to said teeth (5, 5a, 15, 15a) on said cap (4, 14), a part (5a, 15a) of said teeth (5, 5a, 15, 15a) on said cap (4, 14) being offsettable relative to the remainder of said teeth (5, 15), and at least one recess (2b, 12b) in the region of the teeth (2a,12a) on the exterior surface of said neck (2, 12) and arranged to receive the offsettable part (5a, 15a) of said teeth (5, 5a, 15, 15a) on said cap (4, 14).
Drilling and chipping tool having a leading end and a trailing end and a long direction extending in the trailing end - leading end direction, a holder (3, 13) for a tool bit detachably mountable on a neck (2, 12) at the leading end of said tool (1), said holder (3, 13) includes a cap (4, 14) mountable over the neck (2, 12) wherein the improvement comprises that said cap (4, 14) has an annular interior surface with an axis extending in the long direction and with spaced teeth (5, 5a, 15, 15a) formed on and extending inwardly from the interior surface with said teeth extending in the long direction, said neck (2, 12) has an exterior surface with spaced teeth (2a, 12a) thereon extending in the long direction and being complementary to said teeth (5, 5a, 15, 15a) on said cap (4, 14), a part (5a , 15a) of said teeth (5, 5a15, 15a) on said cap (4, 14) being offsettable relative to the remainder of said teeth (5, 15), and at least one recess (2 b, 12b) in the region of the teeth (2a, 12a) on the exterior surface of said neck (2, 12) and arranged to receive the offsettable part (5a, 15a) of said teeth (5, 5a, 15, 15a) on said cap (4, 14), the offsettable part (15a) of the interior teeth (15, 15a) is radially inwardly displaceable with respect to the remainder of the teeth (15).
Drilling and chipping tool having a leading end and a trailing end and a long direction extending in the trailing end - leading end direction, a holder (3, 13) for a tool bit detachably mountable on a neck (2, 12) at the leading end of said tool (1), said holder (3, 13) includes a cap (4, 14) mountable over the neck (2, 12) wherein the improvement comprises that said cap (4, 14) has an annular interior surface with an axis extending in the long direction and with spaced teeth (5, 5a, 15, 15a) formed on and extending inwardly from the interior surface with said teeth extending in the long direction, said neck (2, 12) has an exterior surface with spaced teeth (2a, 12a) thereon extending in the long direction and being complementary to said teeth (5, 5a, 15, 15a) on said cap (4, 14), a part (5a , 15a) of said teeth (5, 5a15, 15a) on said cap (4, 14) being offsettable relative to the remainder of said teeth (5, 15), and at least one recess (2 b, 12b) in the region of the teeth (2a, 12a) on the exterior surface of said neck (2, 12) and arranged to receive the offsettable part (5a, 15a) of said teeth (5, 5a, 15, 15a) on said cap (4, 14), the dimension in the long direction of the offsettable part (5a, 15a) of the interior teeth (5, 5a, 15, 15a) corresponds to one third of the overall length of the teeth in the long direction.
Dependencies are inferred from the claim text.