Keyless adjustable driver

Details Keyless adjustable driver Keyless adjustable driver

1992-06-03

1993-06-15

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Pivoted side jaw

81116, 279 35, B25B 1332

Patent

active

052188906

ABSTRACT:
A keyless adjustable driver, attachable to a chuck on a drill, having a plurality of adjustable settings for holding and driving bolts with flat sides. The keyless adjustable driver includes a cylindrical body having an axial hole, a central shaft, passing through the axial hole, for attaching the driver to the chuck, a plurality of gripper arms pivotally mounted on the cylinder body for pivoting and holding the flat sides of the bolts in response to movement of the head of the central shaft engaging the gripper arms, and a wheel having a threaded axial hole for engaging screw-like threads on the central shaft to move the central shaft to close and lock the gripper arms to hold the bolt as the device rotates on the drill.

REFERENCES:
patent: 2634641 (1953-04-01), Hodges
patent: 3712633 (1973-01-01), Schadlich
patent: 4679468 (1987-07-01), Gray
patent: 4869136 (1989-09-01), Easter et al.
patent: 4877259 (1989-10-01), Rohm et al.

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