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US 2003/0145388 A1Published application
Screw driving device
AssigneeHilti Aktiengesellschaft
InventorsHorst Rahmsdorf, Gerd Daubinger, Felix Ferlemann
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AssigneeHilti Aktiengesellschaft
InventorsHorst Rahmsdorf, Gerd Daubinger, Felix Ferlemann
Estimating the term…
A screw driving device (2) for a hand tool drilling device (1) includes a screw magazine (3) for successive feeding of screws or bolts (4), a feeder block (6) that can be axially displaced against the force of a feeder spring (5), which at least partially supplies screws (4) during the back and forth reciprocating movement of the feeder block (6), and a driving tool (8) that can be coupled rotationally in form locked manner with a screw head (7), wherein the driving tool (8) axially moveably receives a rotatingly driven drilling tool (9) in a coaxial hollow inner space, and is spring biased axially by a clutch spring (10) relative to the screw driving device in a rotation driver position X, in which a drilling tool tip (11) is axially separated from the screw head (7) and is coupled rotationally form locked with the driving tool (8).
Screw driving device for a hand drilling device (1) having a drilling axis and a front end for drilling into a workpiece (17), said screw driving device (1) comprising a magazine (3) for successively feeding screws or bolts (4) to be driven into said workpiece (17), and an axially extending driving tool (8) having a front end with a coupling part arranged to be coupled rotationally in a form locked manner with a screw head (7) of one of said screws or bolts (4), said driving tool (8) being axially moveable and laterally enclosing a rotatable driver drilling tool (9) within an axially extending hollow inner space (15), said drilling tool (9) having a drilling tip (11) at the front end thereof, a clutch spring (10) axially biasing said driving tool (8), relative to the screw driving device and thereby said driving tool (8) being prestressed in a rotation driver position (X) in which said drilling tip (11) is axially separated from said screw head (7) and said driving tool (8) is coupled in a form locked manner to said drilling tool (9) and engageable by said coupling with one of said screw heads (7).
Screw driving device, as set forth in claim, said driving tool (8) is arranged concentrically within said feeder block (5).
Dependencies are inferred from the claim text.