Self-gradually locking chuck

Details Self-gradually locking chuck Self-gradually locking chuck

1987-01-08

1989-05-09

Weidenfeld, Gil

Chucks or sockets

With fluid-pressure actuator

Socket type

279 22, 279 75, B23B 3104

Patent

active

048282774

ABSTRACT:
A self-gradually locking chuck for drills or similar devices particularly suitable for portable drills used in surgery. It includes a cylindrical sleeve which can be coaxially fixed to a rotating shaft, a ferrule having a conical section provided internally with lobes, a cylindrical portion at one of its ends for engagement with said sleeve and a cylindrical portion at the other end. A first mounting, perforated longitudinally by a hole, includes a central portion having locking jaws which are movable in holes in a direction convergent upon the axis of the chuck and two second mountings opposite to the central body. A spring and centering device are provided. A cylindrical ferrule is threaded to a part of the first mounting as it projects from the first-mentioned ferrule. The first mounting and ferrule move axially in relation to each other and in relation to the cylindrical sleeve in which the ferrule can be releasably secured to the cylindrical ferrule by a retaining device. The second mountings are releasably secured to the sleeve by a retaining device.

REFERENCES:
patent: 1130716 (1915-03-01), Dressel
patent: 1168540 (1916-01-01), Musselman
patent: 2405772 (1946-08-01), Adams et al.
patent: 3398965 (1968-08-01), Cox
patent: 3767218 (1973-10-01), Linthicum et al.

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