Flexible or portable closure – partition – or panel – Roll type – Shiftable position roll
Reexamination Certificate
2002-12-16
2003-11-11
Purol, David (Department: 3634)
Flexible or portable closure, partition, or panel
Roll type
Shiftable position roll
Reexamination Certificate
active
06644379
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an adjustable upper beam with a cuttable blind assembly. It is mainly made up of a blind embodiment, a movable upper beam having a telescopic inner tube and outer tube, two retaining clamps, a pull cord wherein the upper side of the blind is held in place by the upwardly and inwardly bent retaining edges of the inner and outer tube of the movable upper beam. The inner and outer tube have a pair of symmetrically protruded registration lugs for engagement with the locking holes of the retaining clamps in assembly. The front and rear clamping plates of the retaining clamps made of metallic material can hold the inner and outer tubes firmly in place. The inner tube and outer tube of the movable upper beam are in telescopic engagement with each other so that the length of the upper beam can be adjusted with the blind embodiment cut into size in a DIY manner to fit to windows of various dimensions.
Referring to
FIG. 1
, the conventional indoor Venetian blind
10
is equipped with a slat assembly
11
of a proper length and width, the slat assembly
11
is provided with a plurality of equally distanced pull cords
12
that are tied to the upper beam
13
. Near the two ends of the upper beam
13
are disposed a through hole with a clamping device
14
riveted thereto respectively. Each clamping device
14
has a pivotal hook ring
141
at the joint top end of a front plate
15
and a rear plate
16
. The front plate
15
is provided with a cord fixings scat
151
at the bottom thereof, and the rear plate
16
has a through hole at the lower section thereof. A pull cord
17
is led through the cord fixing seat
151
so that the actuation of the pull cord
17
can drive the slat assembly
11
to lift up or roll up gradually.
Such a prior art structure has a disadvantage in practical use. The upper beam
13
of the Venetian blind
10
having a fixed length can only be fit to one size window. A person can not make adjustment on the size of the upper beam
13
to make the same adapted to windows of different sizes.
SUMMARY OF THE INVENTION
Therefore, the primary object of the present invention is to provide a length adjustable upper beam with cuttable blind embodiment so that the Venetian blind can be fitly mounted to windows of various sizes in a DIY manner.
Another object of the present invention is to provide a length adjustable upper beam holding the blind assembly in place by way of retaining clamps having proper flexibility and stiffness so that they can effectively and tightly hold the outer tube and the inner tube.
REFERENCES:
patent: 1301603 (1919-04-01), Rathbun
patent: 1949653 (1934-03-01), Moore
patent: 2631661 (1953-03-01), Nelson
patent: 2837152 (1958-06-01), Moore
patent: 4603725 (1986-08-01), Knight
patent: 4699196 (1987-10-01), Elliott
patent: 4742860 (1988-05-01), Debs
patent: 5881792 (1999-03-01), Cheng
patent: 6367537 (2002-04-01), Hsu
patent: 6431248 (2002-08-01), Hyman et al.
Purol David
Troxell Law Office PLLC
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