Elastic pad

Details Elastic pad Elastic pad

2002-04-15

2004-08-24

Cole, Elizabeth M. (Department: 1771)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S066600, C428S066700, C428S131000, C428S134000, C428S137000, C428S138000, C428S139000, C428S223000, C428S080000, C428S101000, C428S076000

Reexamination Certificate

active

06780487

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a pad which is stuffed with an elastic body to provide protection against friction, pressure, shock, and the like.
BACKGROUND OF THE INVENTION
As shown in
FIG. 1
, an elastic pad
1
of the prior art is made of a casing
11
and an elastic block
12
of a rubber material. The elastic block
12
is confined by a support frame
13
of a rigid material. The prior art elastic pad
1
is defective in design in that the elastic block
12
is relatively poor at rebounding, and that the rigid support frame
13
undermines the softness of the elastic pad
1
.
As shown in
FIG. 2
, another prior art elastic pad
2
is made of a casing
21
, and an elastic member
22
which is encased by the casing
21
and is provided with a plurality of carrying seats
23
for holding a spring
24
in conjunction with a spring holder
25
. The springs
24
are confined by a support frame
26
. The springs
24
serve to enhance the elasticity of the prior art elastic pad
2
. The metal springs
24
give an added weight to the prior art elastic pad
2
. In addition, the metal springs
24
are not uniformly distributed in the inside of the casing
21
, thereby compromising the elastic quality of the prior art elastic pad
2
. The metal springs
24
and the support frame
26
tend to undermine the quality of softness of the prior art elastic pad
2
. The elastic member
22
is complicated in construction and is therefore not cost-effective. For example, it is time-consuming to assemble the spring holders
25
of the elastic member
22
.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an elastic pad free of the drawbacks of the prior art elastic pads described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by an elastic pad which is formed of a protective covering and an elastic member. The elastic member is encased by the protective covering and is formed of a first elastic body, a second elastic body, and a third elastic body symmetrical to the second elastic body. The first elastic body is sandwiched between the second and the third elastic bodies such that the second and the third elastic bodies are retained by the first elastic body. The first elastic body is provided in the fringe with one or more retaining through slots for retaining the second and the third elastic bodies. The three elastic bodies expand and contract together to provide the elastic pad with an excellent quality of elasticity. The first elastic body is of a flat construction. The second and the third elastic bodies are shaped like a mushroom cap, or starfish with a plurality of arms. The arms are provided with a retaining portion to engage with the retaining through slots of the first elastic body.
The protective covering is provided in the inner wall with a frame for confining the elastic member.
The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.


REFERENCES:
patent: 3908054 (1975-09-01), Ito
patent: 5725931 (1998-03-01), Landin et al.

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