Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Reexamination Certificate
2002-01-17
2003-07-08
Johnson, Blair M. (Department: 3634)
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
C160S17700R
Reexamination Certificate
active
06588481
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a fixing mount for use on an upper beam of a Venetian blind. It is made up of a fixing seat, an adjusting roller and a roller. The fixing seat has a base board and a pair of vertically raised parallel walls which are obliquely extended with respect to the axial direction of the upper beam of a blind. The ends of the parallel walls are located in fit abutment against the interior surfaces of the upper beam. The two opposite longitudinal sides of the base board are also located slantly with respect to the axial direction of the upper beam just as the two parallel walls, defining an angle less than 90 degrees to house an adjusting unit. Thereby the adjusting unit can be placed as close as to the fixing seat so as to make the distance between the end of the upper beam and the adjusting unit longer adapted for a wide range of window bracket.
Referring to
FIG. 1
, a prior art fixing mount of an upper beam is mainly made up of a fixing seat
10
, an adjusting wheel
20
and a roller
30
. The fixing seat
10
has a bottom board
11
which is axially equipped with a pair of symmetric vertical side plates
12
. On the top edge of each vertical side plate
12
is disposed a downwardly extended cut
13
. At the center of the bottom board
11
is disposed a round hole
14
next to each side of which is disposed a square through hole
15
. Between the round hole
14
and each square through hole
15
is placed a lateral vertical wall
16
with a receiving space
17
defined between the two lateral vertical walls
16
. On each lateral vertical wall
16
is disposed an obliquely oriented cavity
18
(off the longitudinal center line of the bottom board
11
).
The adjusting wheel
20
has a projected shaft end
21
which is provided with a flanged periphery
22
at each axial end and has a square hole
23
extending through the central line thereof The roller
30
has a longitudinal retaining rod
31
at each end. In assembly, the retaining rods
31
of the roller
30
are registered with the obliquely oriented cavities
18
of the two lateral vertical walls
16
with the roller
30
housed in the receiving space
17
between the vertical walls
16
. The projected shaft ends
21
of the adjusting wheel
20
are placed in the downwardly extended cuts
13
of the two vertical side plates
12
with the flanged periphery
22
exposed externally of the vertical side plates
12
for limiting purpose.
Referring further to
FIG. 2
, when mounted to an upper beam A, a number of fixing seats
10
are slightly guided into the upper beam A and retained in position. The square holes
23
of the rollers
20
rotatably mounted to the fixing seats
10
are engaged with a stick B of a square cross section for synchronous operation. The pull cord D of the blind slats is led upwardly through the bottom holes of the upper beam A and is secured to the rollers
20
respectively. The pull cord D of the blind slats is further guided through the bottom hole of the upper beam and via the round holes
14
of the fixing seat
10
and then wound around the roller
30
of the fixing seat
10
and finally led through the adjusting means c to complete the assembly.
There are several disadvantages associated with such a prior art fixing mount:
1. As the upper beam A is too long and must be cut to fit to a window frame, the distance between the adjusting means C and the nearest fixing seat
10
is relatively too wide, resulting in the cutting length limited to a certain small range.
2. The adjusting means C is disposed relatively far from the fixing seats
10
, rendering the pull cord D extending between the adjusting means C and the nearest and farthest fixing seats
10
relatively too long. Thus, a user must exert more force on the pull cord D too pull the blind slats up.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide an improved fixing mount adapted for use in the upper beam of a blind for guiding a pull cord thereof. The fixing mount assembly obliquely secured with respect to the longitudinal direction of the upper beam of the blind permits the upper beam to be selectively cut to fit to a wide variety of window brackets.
Another object of the present invention is to provide an improved fixing mount which can be secured to the interior of the upper beam at two spaced positions with the pull cord extend with a shorter span, resulting in speedy and effortless operation on the pull cord.
REFERENCES:
patent: 2840157 (1958-06-01), Lorentzen
patent: 4457351 (1984-07-01), Anderson
patent: 4676292 (1987-06-01), Valle et al.
patent: 4697629 (1987-10-01), Anderson
patent: 1032124 (1966-06-01), None
patent: 300512 (1965-09-01), None
Ching Feng Blinds Ind., Ltd.
Johnson Blair M.
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