Clamp device for holding tool with shank

Details Clamp device for holding tool with shank Clamp device for holding tool with shank

2002-03-08

2003-07-22

Gibson, Jr., Robert W. (Department: 3634)

Supports: racks

Special article

Article includes elongated portion

C211S066000, C211S089010, C248S316200, C248S316300

Reexamination Certificate

active

06595376

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a tool holding rack and includes an inclined plate and a friction member movably connected to the inclined plate. A shank of a tool is clamped between the friction member and a friction pad on an opposite side of the friction member.
BACKGROUND OF THE INVENTION
A conventional tool clamp device for holding the shank of a tool is disclosed in U.S. Pat. No. 5,342,0101 to Huang and
FIGS. 7 and 8
. The tool holding base
60
includes four protrusions
63
so as to define four recesses
632
therebetween. Each protrusion
63
has a friction pad
633
attached to an inside thereof and the opposite sides of the frictions
63
between the two outmost protrusions
63
each have a chamber
631
. A frame
61
including an inclined plate is inserted in each of the chambers
631
and a rail extends from each of the inclined plates. A rack
611
is defined on each of the rails. A roller
62
is engaged with each of the frame
61
and includes a groove with teeth
621
defined in a surface defining the groove so that the teeth
621
are engaged with the rack
611
. Two friction rings
622
are mounted to each of the rollers
62
. A shank of a took is held between the friction rings
622
and the friction pad
633
. The manufacturing cost is so high because the teeth
621
and the rack
611
require precise molds which are expensive. Besides, as shown in
FIG. 8
, A guide board
71
attached on the package of the clamp device is asked to be used on a wall
50
and pre-set marks
711
are printed on the guide board
71
so that the base
60
is nailed on the wall
50
by putting nails through the base
60
and the marks
711
.
The guide board
71
is made of paper and easily torn apart or deformed so that the installation could not be as expected.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a clamp device which comprises a base having at least two protrusions and a recess is defined between the two protrusions. A chamber is defined in an inside of one of the at least two protrusions and a friction pad is attached to an inside of the other of the at least two protrusions.
A frame is received in the chamber and has an inclined plate with two parallel rails extending from a top surface of the inclined plate. A roller is received in the chamber and two grooves are defined in an outer surface of the roller. A friction member is mounted to the roller and located between the two grooves. The roller is movably connected to the inclined plate by engaging the two rails with the grooves of the roller.
The primary object of the present invention is to provide a tool clamp device that is made at a lower cost and can hold the shanks of tools of different sizes.


REFERENCES:
patent: 1485092 (1924-02-01), Rauchut
patent: 1494252 (1924-05-01), Kane
patent: 3013756 (1961-12-01), Boston
patent: 3294350 (1966-12-01), Grottola
patent: 3422960 (1969-01-01), Ell et al.
patent: 3580394 (1971-05-01), Elliot
patent: 3672619 (1972-06-01), Bowen
patent: 5165629 (1992-11-01), Breveglieri
patent: 5342010 (1994-08-01), Huang

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