Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Roll type
Reexamination Certificate
2003-05-08
2004-06-08
Purol, David (Department: 3634)
Flexible or portable closure, partition, or panel
Plural and/or with rigid closure
Roll type
C160S084050
Reexamination Certificate
active
06745811
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a window covering and, more particularly, to a combination window covering which comprises a blind and a pair of non-opaque flexible sheets at front and back sides of the blind.
2. Description of the Related Art
FIGS. 6 and 7
are perspective (in an extended condition) and side views of a combination window covering according to the prior art. This structure of combination window covering
90
comprises a barrel
91
fastened transversely pivotally with the top side of the window and rotatable by hand or a motor drive, a bottom rail
92
suspending below the barrel
91
, a plurality of flexible slats
93
arranged in parallel between the barrel
91
and the bottom rail
92
, two pairs of ladder tapes
94
bilaterally joining the flexible slats
93
, the ladder tapes
94
including two front ladder tapes
95
connected between the barrel
91
and the bottom rail
92
and joining the flexible slats
93
at the front side and two back ladder tapes
96
connected between the barrel
91
and the bottom rail
92
and joining the flexible slats
93
at the back side, and a pair of non-opaque flexible sheets (for example, meshed fabrics)
97
A and
97
B respectively provided at the front and back sides of the flexible slats
93
and connected between the barrel
91
and the bottom rail
92
. The non-opaque flexible sheets
97
A and
97
B are rectangular sheet members fitting the size of the window (the non-opaque flexible sheets
97
A and
97
B are not bonded to the flexible slats
93
; however, there are known combination blinds, for example, U.S. Pat. No. 5,419,385, in which the flexible sheets are respectively bonded to the flexible slats).
By means of the aforesaid arrangement, the flexible sheets
97
A and
97
B vaguely cover the slats
93
at the front and back sides, showing a particular light shading effect quite different from conventional blinds. This design of combination window covering builds up an elegant and graceful style. The user can regulate the light passing through the combination window covering
90
by rotating the barrel
91
through an angle to move the front ladder tape
95
and the back ladder tapes
96
longitudinally in reversed directions. When continuously rotating the barrel
91
, the barrel
91
will roll up the flexible slats
93
and the flexible sheets
97
A and
97
b (see
FIG. 8
) to the top side of the window or to a particular elevation covering the upper part of the window.
The aforesaid combination window covering
90
is still not satisfactory in function. When the user rolling up the combination window covering
90
from its fully extended position (in the direction as shown in FIG.
8
), the upper part of the back flexible sheet
97
B will be rolled up by the barrel
91
prior to the front flexible sheet
97
A. and, the back flexible sheet
97
B will be covered on the front flexible sheet
97
A over the periphery of the barrel
91
, i.e., the diameter of the back flexible sheet
97
B is greater than the front flexible sheet
87
A when rolled up. Because the flexible sheets
97
A and
97
B have the same length and are rolled up at a different start point, the back flexible sheet
97
B is smoothly stretched between the barrel
91
and the bottom rail
92
when the combination window covering
90
rolled up. At this time, the front flexible sheet
97
A has a curved lower part
98
suspending below the bottom rail
92
at the front side, destroying the sense of beauty of the received status of the combination window covering
90
.
It is therefore desirable to provide a combination window covering that eliminates the aforesaid drawback.
SUMMARY OF THE INVENTION
It is the primary object of the present invention to provide a combination window covering, which keeps the front and back flexible sheets in a well-balanced status, causing a sense of beauty.
To achieve this object of the present invention, the combination window covering comprises an elongated barrel fastened rotatably with a top side of a window for free rotation on an axis thereof; a bottom rail arranged in parallel to and spaced below the barrel; a plurality of slats arranged in parallel between the barrel and the bottom rail; front and back ladder tapes connected in parallel between the barrel and the bottom rail at front and back sides of the slats and joining the slats, and a light-admitting flexible sheet. The flexible sheet has first and second ends respectively fixedly fastened to the barrel at two sides, a front half extended from the first end and suspended at the front side of the slats, a back half extended from the second end and suspended at the back side of the slats, and a middle part connected between the front half and the back half and moveably passing over the bottom rail.
REFERENCES:
patent: 2110145 (1938-03-01), Loehr
patent: 2914122 (1959-11-01), Pinto
patent: 2994370 (1961-08-01), Pinto
patent: 5419385 (1995-05-01), Vogel et al.
patent: 5680891 (1997-10-01), Prince
patent: 6688370 (2004-02-01), Nien
Bacon & Thomas PLLC
Nien Made Enterprise Co., Ltd.
Purol David
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