Air mattress structure

Details Air mattress structure Air mattress structure

1999-07-14

2001-07-17

Trettel, Michael F. (Department: 3628)

Beds

Mattress

Having confined gas

C005S706000, C005S420000

Reexamination Certificate

active

06260222

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an inflatable air mattress.
2. Description of the Related Prior Art
A conventional air mattress structure
10
is shown in
FIGS. 1 and 2
, and comprises a sponge layer
13
, an upper cloth layer
11
coated on the top face of the sponge layer
13
, a lower cloth layer
12
coated on the bottom face of the sponge layer
13
, and a polyvinyl chloride (P.V.C.) layer
14
sandwiched between the upper cloth layer
11
and the top face of the sponge layer
13
. In use, when the inflation valve (not shown) is opened, air is introduced into the inside of the air mattress structure
10
so as to inflate the sponge layer
13
so that the air mattress structure
10
can be placed on the ground to be used as a seating mat or a sleeping bag. When the air mattress structure
10
is not in use, the inflation valve can be opened again so that the air mattress structure
10
can be squeezed so as to drain the air out of the sponge layer
13
. The inventor's prior art of an air mattress is disclosed in U.S. Pat. No. 5,669,092, entitled “AIR MATTRESS STRUCTURE”. However, the above-mentioned prior arts are not transparent so that the user cannot see the inflation and squeeze process of the inside of the air mattress structure, thereby causing inconvenience to the user.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an inflatable air mattress structure comprising a mattress body including a sponge layer having a first face and a second face, a first line low density polyethylene layer laminated on the first surface of the sponge layer, a first nylon layer laminated on the first line low density polyethylene layer, a second line low density polyethylene layer laminated on the second surface of the sponge layer, and a second nylon layer laminated on the second line low density polyethylene layer. The first line low density polyethylene layer, the first nylon layer, the second line low density polyethylene layer, and the second nylon layer of the mattress body are transparent so that the inflation and the squeeze of the sponge layer are visible. The sponge layer is made with various colors, thereby enhancing the appearance and variance of the air mattress structure.
According to another form of the present invention, the sponge layer has a periphery, the first line low density polyethylene layer and the second line low density polyethylene layer are respectively secured to the periphery of the sponge layer with glue, the first nylon layer is laminated on the first line low density polyethylene layer, the second nylon layer is laminated on the second line low density polyethylene layer, and the surface area of each of the first line low density polyethylene layer, the first nylon layer, the second line low density polyethylene layer, and the second nylon layer is greater than that of the sponge layer, whereby the sponge layer is tightly enclosed in the laminated layers.
According to a further form of the present invention, the sponge layer has four sides, and the surface area of each of the first line low density polyethylene layer, the first nylon layer, the second line low density polyethylene layer, and the second nylon layer is greater than that of the sponge layer for enclosing all of the four sides of the sponge layer in the middle of the laminated layers.
Further objectives and advantages of the present invention will become apparent after a careful reading of the detailed description with reference to the accompanying drawings.


REFERENCES:
patent: Re. 31898 (1985-05-01), Suter
patent: 3574873 (1971-04-01), Weinstein
patent: 3675377 (1972-07-01), Suter
patent: 4025974 (1977-05-01), Lea et al.
patent: 4319781 (1982-03-01), Tsuge
patent: 4357725 (1982-11-01), Ahlm
patent: 4450193 (1984-05-01), Staebler
patent: 4520517 (1985-06-01), Ahlm
patent: 5152018 (1992-10-01), Lea
patent: 5226384 (1993-07-01), Jordan
patent: 5669092 (1997-09-01), Lin
patent: 6190486 (2001-02-01), Switlik

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