Chuck unit of a power hand tool

Details Chuck unit of a power hand tool Chuck unit of a power hand tool

1998-09-02

1999-08-10

Briggs, William

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

279 61, 279902, B23B 522

Patent

active

059346906

ABSTRACT:
A chuck unit installed in a power hand tool and controlled to hold down/release a bit, including a barrel, three clamping rods, a front cover shell, a rotary control device, a stop member, a rear cover shell, and a dust ring, wherein the rotary control device has a nut with embossed peripheral blocks for positive positioning in respective recessed locating holes in the front cover shell; the rotary control device is coupled to a stop flange outside the barrel and revolvably supported on the barrel by steel balls; the stop member is formed of two symmetrical halves and mounted on the front end of the barrel to stop the rotary control device from forward movement.

REFERENCES:
patent: 5232230 (1993-08-01), Lin
patent: 5407215 (1995-04-01), Yang
patent: 5458345 (1995-10-01), Amyot
patent: 5501473 (1996-03-01), Barton et al.
patent: 5553873 (1996-09-01), Salapaka et al.
patent: 5816582 (1998-10-01), Steadings et al.
patent: 5829762 (1998-11-01), Claramunt et al.

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