Drill chuck

Details Drill chuck Drill chuck

1977-08-11

1978-08-01

Simpson, Othell M.

Chucks or sockets

With fluid-pressure actuator

Socket type

B23B 3112

Patent

active

041039149

ABSTRACT:
A drill chuck has a chuck body carrying a nonrotatable but axially displaceable tightening cone which displaces radially a plurality of angularly equispaced tool-engaging jaws. The tightening cone is axially shifted by a rotatable but axially fixed tightening sleeve threadedly engaging the cone and manually displaceble on the body. This sleeve is connected by a torque-responsive clutch with a rotatable and axially shiftable tightening ring with the chuck slipping after the jaws engage the workpiece to permit relative rotation of the sleeve and the ring. The sleeve and the ring are threadedly interconnected so that further rotation of the ring causes an axial displacement thereof and the ring displaces a piston which pressurizes a cylinder forming a hydraulic cushion for a working piston bearing upon the chuck jaws in the axial direction.

REFERENCES:
patent: 3025071 (1962-03-01), Larrad
patent: 3388916 (1968-06-01), Winnen et al.
patent: 3647231 (1972-03-01), Schafer
patent: 3721092 (1973-03-01), Schafer

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