Chuck assembly for holding releasably a bit member

Details Chuck assembly for holding releasably a bit member Chuck assembly for holding releasably a bit member

1993-12-30

1995-04-18

Bishop, Steven C.

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

279140, 279902, B23B 3112

Patent

active

054072158

ABSTRACT:
A chuck assembly includes a hollow chuck body assembly, a jaw unit provided at a lower end of the chuck body assembly, and a rotary shaft disposed in the chuck body assembly and coupled with the jaw unit. The chuck body assembly has a top surface formed with first annularly arranged ratchet teeth. The rotary shaft has an upper end portion extending outwardly from an upper end of the chuck body assembly. A sleeve member is sleeved on the chuck body assembly. A rotary ring is sleeved on the upper end portion of the rotary shaft and has a bottom surface formed with second annularly arranged ratchet teeth which engage normally the first ratchet teeth so as to restrict undesired rotation of the rotary shaft in the counterclockwise direction. A rotary knob is sleeved on the sleeve member and is coupled with the upper end portion of the rotary shaft. The chuck assembly is provided with a disengaging unit which is operatively associated with the sleeve member in such a manner that rotation of the sleeve member in the clockwise direction causes vertical movement of the movable ring so as to disengage the second ratchet teeth from the first ratchet teeth and permit rotation of the rotary shaft in the second direction.

REFERENCES:
patent: 4695065 (1987-09-01), Komatsu et al.
patent: 5031925 (1991-07-01), Tatsu et al.

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