Vise structure

Details Vise structure Vise structure

2001-05-04

2002-06-18

Hail, III, Joseph J. (Department: 3723)

Work holders

Relatively movable jaws

Means for direct manual adjustment of jaw

C269S194000, C269S215000, C269S171000

Reexamination Certificate

active

06406012

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a vise and the movable clamp member has a pushing member urging a force on a back so as to clamp the object firmly.
BACKGROUND OF THE INVENTION
A conventional vise for clamping an object between a fixed clamp member
3
and a movable clamp member
2
is shown in FIG.
1
and generally includes a base
1
and the fixed clamp member
3
extends upward from the base
1
and the movable clamp member
2
is movably connected on the base
1
. A threaded rod
4
extends through a frame
5
on the base
1
and is connected to the back of the movable clamp member
2
. The movable clamp member
2
is moved toward the fixed clamp member
3
by rotating the threaded rod
4
so as to clamp objects between the fixed clamp member
3
and the movable clamp member
2
. It is experienced that because the fixed clamp member is connected to the base
1
at its lower end, so that a top portion
3
a
of the fixed clamp member could be deformed slightly when a force is applied to the top portion
3
a
of the fixed clamp member
3
. A similar situation is happened on the top portion
2
a
of the movable clamp member
2
. Therefore, when the objects clamped by the movable clamp member
2
and the fixed clamp member
3
are tubular objects, the top most object could not be clamped firmly and when a force is applied on the objects, the top most one could jump out from the vise.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a vise and comprises a base having a fixed clamp member and a movable clamp member. A rack member is connected to the base and a rod has a first end thereof extending through a horizontal portion of the movable clamp member and is connected to a fixing member from an underside of the base. A connection member is mounted to the rod and has two lugs extending therefrom. A position member has a first end thereof pivotally connected to the connection member and a second end of the position member is engaged with the rack member. A head is connected to a second end of the rod and located between the two lugs. The head has an inclined surface. A pushing member is pivotally connected between the two lugs and an underside of a first end of the pushing member is rested on the inclined surface of the head. A pushing surface is defined in a second end of the pushing member and matched with a vertical portion of the movable clamp member.
The primary object of the present invention is to provide a vise that the movable clamp member has a deformation compensation device which prevents the top portion of the movable clamp member from being deformed.
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: 2815053 (1957-12-01), Walker
patent: 2930293 (1960-03-01), Muench
patent: 4138100 (1979-02-01), Krummenacher
patent: 4327903 (1982-05-01), Kawasaki

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