Flexible or portable closure – partition – or panel – Miscellaneous and processes of using
Reexamination Certificate
2002-11-26
2004-04-06
Purol, David (Department: 3634)
Flexible or portable closure, partition, or panel
Miscellaneous and processes of using
C160S238000, C160SDIG007
Reexamination Certificate
active
06715532
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a window screen, more particularly to a window screen adapted to be installed in a room at an inner side of a window for blocking sunlight through the window.
2. Description of the Related Art
A first conventional window screen includes a PVC screen sheet wound on a winding mechanism and operable for moving between retracted and extended positions. The screen sheet includes an inner screen laminate in a color conforming to that of an interior of a room to which the window screen is to be applied, and an outer screen laminate adhered to the inner screen laminate and to be disposed to face the window. To provide a sun-blocking effect, the outer screen laminate is typically in a dark color. However, the dark-colored outer screen laminate is visible from an exterior of the house to result in a disharmonious appearance of the house when the house has a light-colored outer wall surface.
To solve the aforementioned problem, another conventional window screen with a three-layered structure has been proposed heretofore. Referring to
FIG. 1
, the window screen
1
is shown to include two outer screen laminates
11
,
12
and an inner screen laminate
13
disposed between the outer screen laminates
11
,
12
. Each of the screen laminates
11
,
12
,
13
is formed from a polyvinyl chloride film. The outer screen laminates
11
,
12
may be made in colors conforming respectively to the interior of a room and the outer wall surface of a house. The intermediate screen laminate
13
is dark-colored, such as black, so as to achieve the desired sunlight-blocking effect.
During manufacture, the inner screen laminate
13
is disposed between the outer screen laminates
11
,
12
. The screen laminates
11
,
12
,
13
are passed simultaneously through a bonding machine
14
for bonding together the inner and outer screen laminates
11
,
12
,
13
so as to form the window screen
1
. However, the bonding process involves high costs. In addition, the window screen
1
produced by the bonding process was found to have creased surfaces. To eliminate creases, the screen laminates
11
,
12
,
13
are initially tensioned before passing through the bonding machine. This, however, results in curled corners in the window screen
1
produced thereby. Moreover, when it is desired to form a pattern on the window screen
1
, the pattern is initially formed on the inner screen laminate
13
by punching. As such, the tension of the inner screen laminate
13
cannot be properly controlled during the bonding process.
SUMMARY OF THE INVENTION
The main object of the present invention is to provide a window screen capable of solving the aforesaid problems of the prior art.
Accordingly, the window screen of the present invention includes a screen sheet having opposite outer side surfaces. The screen sheet includes a pair of screen laminates, each of which has a first surface facing the other one of the screen laminates, and a second surface opposite to the first surface, and an intermediate bonding layer attached to the first surfaces of the screen laminates for bonding together the screen laminates. The bonding layer is formed from a liquid resin composition that contains an oil-based ink. The second surfaces of the screen laminates constitute the outer side surfaces of the screen sheet, respectively.
REFERENCES:
patent: 1203758 (1916-11-01), Lowe
patent: 2071921 (1937-02-01), Dickson
patent: 4078492 (1978-03-01), Levy et al.
patent: 4247599 (1981-01-01), Hopper
patent: 4358488 (1982-11-01), Dunklin et al.
patent: 4910070 (1990-03-01), Al'Hariri
patent: 5400848 (1995-03-01), Gainer
patent: 5443563 (1995-08-01), Hindel et al.
Purol David
Rodman & Rodman
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