Chucks or sockets – Socket type – Radially reciprocating jaws
Reexamination Certificate
2002-12-27
2004-10-26
Howell, Daniel W. (Department: 3722)
Chucks or sockets
Socket type
Radially reciprocating jaws
C279S014000, C279S029000, C279S082000, C007S165000, C081S436000
Reexamination Certificate
active
06808182
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a tool bit quick release or connect chuck device that has a sleeve to be slidably control a positioning pin to allow the tool bit to be quickly released from or connected to the chuck device.
BACKGROUND OF THE INVENTION
A conventional tool bit chuck device
6
for connecting a saw blade is shown in FIG.
9
and generally includes a hexagonal connection rod
64
extending from a first end of the body of the device
6
and an engaging port extends from a second end of the body of the device
6
. A groove
641
is defined in an outer periphery of the connection rod
64
so as to be connected with a handle or the like. A slot
61
is defined through the engaging port and a threaded hole
62
defined laterally through the engaging port and communicates with the slot
61
. The saw blade can be inserted in the slot
61
and a bolt
63
is engaged with the threaded hole
62
and contacts a side of the saw blade to position it. It takes time to screw the bolt
63
when installing the saw blade, and to unscrew the bolt
63
when removing the saw blade from the chuck device
6
.
The present invention intends to provide a chuck device that is able to install or release a tool bit by simply sliding a sleeve on the device.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a chuck device which comprises a body having a slot defined from a first end of the body and being ended before a second end of the body. A hexagonal recess is defined in the first end of the body and communicates with the slot. A hole is defined radially in the body and communicates with the slot. A stepped shoulder extends from an outer periphery of the body and a spring is mounted to the body and a first end of the spring is stopped by the stepped shoulder. A movable clamp is connected to the body and a second end of the spring contacts the movable clamp. A connection rod is connected to a second end of the body.
A sleeve is slidably mounted to the body and has a first tapered inner periphery at a first end of the sleeve. A second tapered inner periphery is defined in a second end of the sleeve so as to push the movable clamp when sliding the sleeve by compressing the spring.
A positioning pin is movably inserted in the hole and an end of the positioning pin extends from the hole and has a tapered periphery which is matched with the first tapered inner periphery at the first end of the sleeve.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
REFERENCES:
patent: 5573255 (1996-11-01), Salpaka
patent: 5903983 (1999-05-01), Jungmann et al.
patent: 6260281 (2001-07-01), Okumura et al.
patent: 6755423 (2004-06-01), Chiu
Baxley Charles E.
Howell Daniel W.
Parsons Luke
Zangzhou I Con Machinery Co., Ltd.
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