Screw driving apparatus
AssigneeKarl M. Reich Maschinenfabrik GmbH
InventorAdolf Cast
Life of this patent
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Abstract
A screw driving apparatus has a housing (1) for the drive system and a hollow screw guide member (2) rigidly secured to the housing (1). A screw driver blade (5) is axially displaceable in the hollow screw guide member and relative to a drive motor forming part of the drive system. This arrangement of the components results in a compact short structure with a handle located near the center of gravity of the structure. Hence, the apparatus can be operated by one hand only and an operator has his other hand free, for example, to hold a work piece (7).
Claims7
A screw driving apparatus, comprising housing means, an electrical drive motor in said housing means, a hollow screw guide member, screw supply means operatively secured to said hollow screw guide member for feeding screws into said hollow screw guide member, a screw driver blade operatively movable in said hollow screw guide member, first mouting means (3) rigidly securing said hollow screw guide member to said housing means, second mouting means slidably mounting said screw driver blade in said housing means for displacement relative to said electrical drive motor, coupling means operatively interconnecting said electrical drive motor to said screw driver blade for driving said screw driver blade, said coupling means comprising first coupling members for rotating said screw driver blade and second coupling members for axially displacing said screw driver blade, and wherein said second coupling members for axially displacing said screw driver blade comprise a screw jack, connector means operatively securing said screw jack in a force transmitting manner to said screw driver blade, and feed advance drive means operatively interconnecting said electrical drive motor to said screw jack for axially displacing said screw jack and thus said screw driver blade.
Dependencies are inferred from the claim text.