Centering mechanism for a fastener driving device

A fastener driving device comprising a fastener driving bit extending along a driving axis of said device, a mounting body arranged around said driving axis, and a plurality of centering elements having respective contact surfaces adapted to contact said fastener, wherein said centering elements are movably connected to said mounting body so that said contact surfaces extend along and are movable in respective planes tangential to a circle centered at said driving axis, wherein said centering elements are connected to said mounting body by a connection such that said centering elements are respectively rigidly held against motion in directions extending radially from said driving axis and perpendicularly to said planes tangential to said circle.

A driving device for a fastener, comprising a housing, a mounting body connected to said housing, a plurality of threaded bolts arranged in a plurality of threaded holes in said mounting body, a plurality of centering elements tiltably arranged on said threaded bolts and thereby connected to said mounting body so as to be tiltable relative to said fastener in respective lateral directions of motion and so that a respective position of each one of said centering elements is adjustable in a respective direction perpendicular to said respective lateral direction of motion of each one of said centering elements, and at least one elastic element arranged to urge said centering elements toward respective positions to contact said fastener, wherein each respective one of said centering elements comprises a respective contact surface adapted to contact said fastener and arranged substantially parallel to said respective lateral direction of motion of said respective centering element.

A driving device for a fastener, comprising a housing, a mounting body connected to said housing, three centering elements connected to said mounting body to be movable relative to said fastener in three respective lateral directions, and at least one elastic element urging said centering elements toward respective positions to contact said fastener, wherein said centering elements comprise respective contact surfaces that are adapted to contact said fastener and that are arranged along edges of an equilateral triangle and respectively substantially parallel to said three lateral directions.

A driving device for a fastener, comprising a housing, a mounting body connected to said housing, a total of two centering elements tiltably connected to said mounting body to be respectively tiltable relative to said fastener in respective tilting planes oriented perpendicularly to each other, and at least one elastic element urging said centering elements toward respective positions to contact said fastener, wherein each respective one of said centering elements comprises a respective contact surface adapted to contact said fastener and arranged substantially parallel to said respective tilting plane of said respective centering element, wherein a first one of said centering elements comprises a first contact jaw having a first one of said contact surfaces, a first ramp surface and a pocket recess, wherein a second one of said centering elements comprises a second contact jaw having a second one of said contact surfaces, a second ramp surface, and a shape adapted to selectively reach into said pocket recess, and wherein said first ramp surface is arranged closer to said housing than is said second ramp surface.

A driving device for a screw fastener having a threading, said device comprising a housing, a mounting body connected to said housing, a plurality of centering elements connected to said mounting body to be movable relative to said fastener in respective plural lateral directions, and at least one elastic element urging said centering elements toward respective positions to contact said screw fastener, wherein said centering elements comprise respective contact surfaces that are adapted to contact said fastener and that are arranged respectively substantially parallel to said lateral directions, and wherein at least one of said centering elements comprises a rib that is adapted to engage said threading of said screw fastener and that is arranged protruding radially inwardly from said contact surface of said one of said centering elements.

A driving device for a fastener, comprising a housing, a mounting body connected to said housing and having slots therein extending in respective directions tangential to a circle centered at a driving axis of said device, a plurality of centering elements connected to said mounting body by being respectively slidably arranged in said slots so as to be respectively slidable along said directions tangential to said circle and relative to said fastener, and at least one elastic element urging said centering elements toward respective positions to contact said fastener, wherein said centering elements comprise respective contact surfaces that are adapted to contact said fastener and that are respectively arranged substantially parallel to said directions tangential to said circle.

A fastener driving device comprising a fastener driving bit extending along a driving axis of said device, a mounting body arranged around said driving axis, and a plurality of centering elements having respective contact surfaces adapted to contact said fastener, wherein said centering elements are movably connected to said mounting body so that said contact surfaces extend along and are movable in respective planes tangential to a circle centered at said driving axis, wherein said circle is adapted to correspond substantially with a shaft circumference of said fastener, and wherein said centering elements are adjustably connected to said mounting body to allow a diameter of said circle to be adjusted.