Self-tightening drill chuck

Details Self-tightening drill chuck Self-tightening drill chuck

1989-04-13

1992-12-15

Schwartz, Larry I.

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

279902, 279 62, 279194, B23B 3112

Patent

active

051710307

ABSTRACT:
A self-tightening drill chuck adapted to be mounted on a drill spindle for rotation about and reciprocation along the axis of the spindle has a guide body rotatable on the spindle about the axis and formed with a plurality of jaw guides inclined relative to the axis and spaced angularly thereabout and formations axially fixing the guide body on the spindle against substantial relative axial displacement. Respective jaws displaceable in the guides are formed with radially directed teeth meshing with a screwthread of an adjustment body fixed on the spindle against rotation thereon so that rotation of the adjustment body relative to the guide body in one direction displaces the jaws radially toward one another and opposite rotation displaces the jaws radially apart. Further formations secure the adjustment body on the spindle for limited relative axial displacement substantially greater than the relative axial displacement possible between the guide body and the spindle.

REFERENCES:
patent: 3325166 (1067-06-01), McCarthy et al.
patent: 4619461 (1986-10-01), Rohm
patent: 4645387 (1987-02-01), Rohm

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