Locking drill chuck

Details Locking drill chuck Locking drill chuck

2007-07-31

2007-07-31

Carter, Monica (Department: 3722)

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

C279S140000

Reexamination Certificate

active

10892976

ABSTRACT:
A chuck for use with a manual or powered driver having a chuck body, jaws, a nut, a front sleeve, a rear sleeve, and a nut jacket is provided, wherein the jaws are respectively and operatively inserted into a plurality of angled bores uniformly distributed around the chuck body, the threads of the nut engages with that of the jaws to form a thread driving mechanism, the nut jacket is fixed onto the nut, a toothed member is fixed to the front portion of the chuck body, a plurality of elastic elements are formed at the front end of the nut jacket, a plurality of grooves are formed on the inner circumference wall of the front sleeve, wherein the positioning state of the elastic elements of the nut jacket can be controlled through the grooves of the front sleeve, and locking detents of the nut jacket and ratchets of the toothed member engage to form a locking mechanism, therefore the loosening of the drill tools due to the vibration or impact while using can be prevented.

REFERENCES:
patent: 5765839 (1998-06-01), Rohm
patent: 5829761 (1998-11-01), Rohm
patent: 6247705 (2001-06-01), Yang et al.
patent: 6390481 (2002-05-01), Nakamuro
patent: 6848691 (2005-02-01), Yang et al.
patent: 7000926 (2006-02-01), Wenhua
patent: 2003/0026670 (2003-02-01), Temple-Wilson
patent: 2004/0217558 (2004-11-01), Yang et al.
patent: 2005/0087937 (2005-04-01), Zhou
patent: 2005/0258605 (2005-11-01), Tan
patent: 2006/0027979 (2006-02-01), Yang et al.
patent: 1498201 (2005-01-01), None
patent: 2361201 (2001-10-01), None

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