Self-locking drill chuck

Details Self-locking drill chuck Self-locking drill chuck

2006-10-24

2006-10-24

Carter, Monica (Department: 3722)

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

C279S902000, C279S140000

Reexamination Certificate

active

07125021

ABSTRACT:
A self-locking drill chuck device includes a body, a nut, jaws, a front sleeve, a rear sleeve, a nut jacket and a rolling member. Three jaws are respectively and operatively inserted into three angled bores uniformly distributed around the body, the threads of the nut engages with that of the jaws to form a thread driving mechanism. A ratchet wheel is fixedly mounted at a rear portion of the body, a disk spring is provided between the rolling member and a load carrying shoulder of the body, the front portion of the body has key slots and an annular connecting groove, the rear end of the nut jacket has a plurality of driving grooves and keys on which a locking elastic element and a driving elastic element are respectively fixed. The drill chuck has a simple structure, convenience of operation and high working stability and reliability of self-locking capacity.

REFERENCES:
patent: 5741016 (1998-04-01), Barton et al.
patent: 6517088 (2003-02-01), Rohm
patent: 6581942 (2003-06-01), Rohm
patent: 6848691 (2005-02-01), Yang et al.
patent: 6889986 (2005-05-01), Rohm
patent: 6902172 (2005-06-01), Rohm
patent: 2002/0149159 (2002-10-01), Fan-Chiang et al.
patent: 2003/0042692 (2003-03-01), Sakamaki et al.

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