Object holding device

Details Object holding device Object holding device

2000-05-22

2001-04-17

Kramer, Dean J. (Department: 3652)

Handling: hand and hoist-line implements

Grapple

Pivoted jaws

C294S907000, C901S036000, C901S046000

Reexamination Certificate

active

06217094

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an object holding device and, more particularly, relates to a premium holding device for use in a game machine.
2. Description of the Prior Art
FIG. 7
to
FIG. 10
show a conventional object holding device. A reference numeral
1
denotes a base plate,
2
denotes a driving device,
6
denotes a tension spring,
10
-
1
and
10
-
2
denote first and second claws,
11
denotes a rotary plate driven by the driving device
2
for opening the first and second claws
10
-
1
and
10
-
2
, and
12
denotes first and second pivotal shafts provided on the base plate
1
for supporting rotatably base ends of the first and second claws
10
-
1
and
10
-
2
, respectively.
FIG. 7
shows the conventional holding device in a state that the claws
10
-
1
and
10
-
2
are closed.
FIG. 9
shows the conventional holding device in a state that the claws
10
-
1
and
10
-
2
are opened. The tension spring
6
is inserted between the first and second claws
10
-
1
and
10
-
2
for attracting the claws so as to close them.
The rotary plate
11
is in a shape of an oval having a long axis and a short axis and arranged in the vicinity of the pivotal shafts
12
and between the first and second claws
10
-
1
and
10
-
2
. When the rotary plate
11
is rotated by the driving device
2
and the short axis sides of the rotary plate
12
are brought into contact with the claws
10
-
1
and
10
-
2
, the claws
10
-
1
and
10
-
2
are closed by the action of the tension spring
6
as shown in FIG.
7
and FIG.
8
. When the rotary plate
11
is rotated and the long axis sides of the rotary plate
12
are brought into contact with the claws
10
-
1
and
10
-
2
, the claws
10
-
1
and
10
-
2
are opened against the action of the tension spring
6
as shown in FIG.
9
and FIG.
10
.
The object holding device is normally used for holding many kinds of premiums. If the premium is fragile, the holding force of the object holding device has to be reduced. On the contrary, if the premium has a large mass, the holding force has to be increased. In order to attain such requirements, it is necessary to replace the tension spring
6
according to the kind of the premium.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an object holding device, which can solve the above problems.
A further object of the present invention is to provide an object holding device comprising a base plate, first and second pivotal points formed on the base plate, first and second claws, base ends of which are pivoted at the first and second pivotal points on the base plate, respectively, free ends of which hold an object detachably, a driving device, first and second driven members mounted rotatably around the first and second pivotal points, respectively, and rotated by the driving device, and first and second spiral springs wound around the first and second pivotal points, respectively, for connecting the first and second driven members with the first and second claws, respectively, in order to urge the claws in a closed position.
Yet further object of the present invention is to provide an object holding device comprising a device for detecting an angular position of the claw, and a device for setting an original position when the claws are opened fully.
These and other objects and advantages of the present invention will become apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.


REFERENCES:
patent: 3866966 (1975-02-01), Skinner, II
patent: 4114464 (1978-09-01), Schubert et al.
patent: 4149278 (1979-04-01), Wiker et al.
patent: 4286380 (1981-09-01), Blount
patent: 4598942 (1986-07-01), Shum et al.
patent: 11320473 (1999-11-01), None

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