Spring devices – Bendable along flat surface – Flexural support
Reexamination Certificate
2002-08-16
2003-07-22
Schwartz, Christopher P. (Department: 3683)
Spring devices
Bendable along flat surface
Flexural support
C267S165000
Reexamination Certificate
active
06595503
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a cushioning device, more particularly to a cushioning device with U-shaped strip portions.
2. Description of the Related Art
FIG. 1
illustrates a conventional cushioning device
100
that includes a base plate
10
, a mounting plate
12
disposed in parallel and spaced apart from the base plate
10
, and a plurality of resilient pieces
14
disposed between the base plate
10
and the mounting plate
12
. The mounting plate
12
can be attached on a bottom or a supporting frame of an industrial machine (not shown) via a screw rod
121
on the mounting plate
12
for positioning the machine on the mounting plate
12
. By virtue of the extension and retraction of the resilient pieces
14
, it is possible to reduce the adverse influence of naturally occurring vibrations on the machine due. However, the conventional cushioning device
100
is formed via a relatively complex assembly process. Moreover, the resilient pieces
14
, which are pressed by the machine, easily experience spring fatigue after a period of use.
FIG. 2
illustrates another conventional cushioning device
200
that includes a base unit
20
, an outer wall
22
disposed on the base unit
20
, and a supporting frame
26
extending outwardly from the base unit
20
. Rubber
24
is filled within all space between the outer wall
22
and the base unit
20
. The outer wall
22
can be attached on a bottom or a supporting frame of an industrial machine (not shown). However, the conventional cushioning device
200
is also formed via a relatively complex assembly process. Moreover, after a period of use, the cushioning effect of the conventional cushioning device
200
is impaired due to deterioration of the rubber
24
.
FIG. 3
illustrates still another conventional cushioning device
300
, which is applied to a building (not shown), that includes a base unit
30
, a top unit
31
, a resilient body
35
disposed between the base and top units
30
,
31
, and a plurality of connecting rods
33
interconnecting the base and top units
30
,
31
and provided with a plurality of damping devices
331
thereon. A supporting column
39
of the building is disposed fixedly on the top unit
31
. The convention cushioning device
300
has a complex construction that consists of too many components, thereby resulting in relatively high costs and in a relatively long assembly time.
SUMMARY OF THE INVENTION
Therefore, the object of the present invention is to provide a cushioning device that utilizes arched metal plates so as to achieve a cushioning effect, thereby overcoming the shortcomings associated with the aforesaid conventional cushioning devices.
According to the present invention, a cushioning device comprises:
a base plate having a first connecting surface;
a mounting plate disposed in parallel to and spaced apart from the base plate, the mounting plate having a second connecting surface facing the first connecting surface, and a mounting surface opposite to the second connecting surface and adapted to be mounted on an object to be cushioned; and
a cushioning unit mounted fixedly between the first connecting surface of the base plate and the second connecting surface of the mounting plate, the cushioning unit including
an intermediate plate disposed between and parallel to the base and mounting plates, and
a plurality of cushioning members, each of which has a first U-shaped strip portion that is mounted fixedly between the first connecting surface of the base plate and the intermediate plate, and a second U-shaped strip portion that is mounted fixedly between the second connecting surface of the mounting plate and the intermediate plate.
REFERENCES:
patent: 5409200 (1995-04-01), Zingher et al.
patent: 5551673 (1996-09-01), Furusawa et al.
patent: 5785303 (1998-07-01), Kutschi
patent: 6170808 (2001-01-01), Kutschi
patent: 2002/0079627 (2002-06-01), McCollough et al.
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