Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Reexamination Certificate
2001-12-06
2003-01-21
Purol, David (Department: 3634)
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
Reexamination Certificate
active
06508294
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a raising device for a Venetian blind, and more particularly to one, which has relatively simple structure, and can be assembled with ease.
Referring to
FIG. 6
, a conventional raising device for a Venetian blind includes a stationary support element
10
, two winding elements
30
, a turning rod
40
, a turning element
70
, a lift cord
90
, a lift cord lock
80
, and a support
50
for turning element
70
.
The stationary support element
10
is fixed to the upper side of a windows and has a receiving room defined by a top and two opposing walls, which each has a holding part
101
sticking inwardly of the supporting element at the bottom.
The winding elements
30
each has a main body
301
, a reel
302
, and a connecting string
303
; the main body
301
has round holes
3011
at two ends thereof and slots
3012
at the bottom; the reel
302
has round rods sticking out from two ends to pass into a respective one of the round holes
3011
of the main body
301
such that the reel
302
can be turned in the main body
301
; the reel
302
further has a hole
3023
, a lengthwise formed polygonal hole
3021
communicating with the round holes
3011
of the main body
301
, and round disks
3022
at two end portions; the connecting string
303
is passed through the hole
3023
, and formed with knot at the upper end so as to be connected to the reel
302
; the lower end of the connecting string
303
is passed through the slot
3012
of the main body
301
, and connected to a lowermost one of the slats of the Venetian blind. The winding elements
30
are received in the room of the stationary support element
10
, and supported by the holding parts
101
with a proper distance in between fixing elements
304
are connected to the holding parts
101
and the bottoms of the main bodies
301
with screws
305
so as to fix the main bodies
301
of the winding elements
30
in position.
The turning rod
40
also has a polygonal shape the same as the polygonal holes
3021
, and is passed through the polygonal holes
3021
of the reels
302
such that the reels
302
can turn together with the turning rod
40
.
The turning element
70
has two opposing round disks
703
, and a cylindrical rod
701
having a lengthwise formed polygonal hole
702
; one of the round disks
703
is formed with several radially arranged engaging ribs
704
on the inner side. The lift cord
90
includes a string and beads connected to the string with equal distance in between; the lift cord
90
is passed onto between the round disks
703
from a middle portion such that the beads thereof can engage the engaging ribs
704
to cause the turning element
70
to turn when the lift cord
90
is pulled down.
The support
50
of the turning element
70
includes a connecting protrusion
501
, a covering protrusion
502
, a round hole
505
, a recess
506
, and a pivotal rod
507
sticking out from the recess
506
; the covering protrusion
502
has screw holes
503
, and locating protrusions
504
. The cylindrical rod
701
of the turning element
70
is passed through the round hole
505
of the support
50
. The connecting protrusion
501
is closely fitted into one end of the stationary support element
10
, and secured in position with the turning rod
40
passing into the polygonal hole
702
of the turning element
70
. The support
30
further has a cover
60
, which has a covering protrusion
601
, a pivotal rod
605
, through holes
602
, hollows
603
, a recess
606
, and a pivotal rod
607
sticking out form the recess
606
.
The lift cord lock
80
has a round hole
801
, and a locking part
802
formed with a gap and is pivotably mounted around the pivotal rod
507
of the support
50
with one of the edges of the locking part
802
being confined in the recess
506
.
The support cover
60
is secured to the support
50
with the covering protrusion
601
abutting the covering protrusion
502
to cover the turning element
70
, and with the through holes
602
facing the screw holes
503
; screws
604
is screwed into the holes
602
and
503
to join the support
50
and the support cover
60
together; the locating protrusions
504
and the hollows
603
can help the support cover
60
to be fitted onto the support
50
in a correct position quickly: the pivotal rod
605
of the support cover
60
passes into a round hole (not shown) at the other end of the turning element
70
; the pivotal rod
607
passes into the round hole
801
of the lift cord lock
80
with the recess
606
confining the other edge of the locking part
802
such that the lock
80
can pivot on the pivotal rods
507
and
607
only within a certain range defined by the recesses
506
and
606
; the front end portion of the lift cord
90
contacts the locking part
802
of the lift cord lock
80
after passing around the turning element
70
.
Thus, the blind can be raised by means of pulling the lift cord
90
downwards; the beads of the lift cord
90
engage the engaging ribs
704
to turn the turning element
70
mid the turning rod
40
, and the reels
302
will turn together to wind the connecting string
303
when the lift cord
90
is pulled down. The beads of the lift cord
90
will engage the locking part
802
of the lift cord lock
80
from the lower sides of the locking part
80
to prevent the turning element
70
from unwantedly turning when the user releases his hold of the lift cord
90
after the pulling action.
The blind can be lowered and raised easily with the raising device, however, as can be seen, the raising device consists of a lot of components, which make the structure relatively complicated and the assembly labor costing.
SUMMARY OF THE INVENTION
Therefore, it is a main object of the present invention to provide a hanging rod for a Venetian blind which has fewer parts such that the structure is simplified, and the assembly needs less labor.
The raising device for a Venetian blind in the present invention includes a stationary support, a first turning element, two intermediate turning elements, a third turning element and a lift cord.
The stationary support is fitted to an upper side of a window. The first turning element consists of two opposing disk portions, and two cylindrical protrusions each sticking out from one of the disk portions. One of the disk portions are provided with radially spaced engaging bars on an inner side. The first turning element is turnably fitted to the left end of the stationary support with the disk portions being horizontal.
The intermediate turning elements and the third turning element each consists of a central reel part, and two pair of opposing disks connected to two ends of the reel part; each pair of opposing disks are provided with radially spaced engaging bars on an inner side, and a cylindrical protrusion on an outer side. The intermediate turning elements are turnably fitted to the stationary support with the disks being positioned upright, and each is connected to the upper end of a string at the reel part; the strings are connected to a lowermost one of the slats of the blind. The third turning element is turnably fitted to the right end of stationary support with the disks thereof being upright.
The lift cord has beads connected thereto in a spaced manner, and is passed onto between each pair of opposing disks from the intermediate portions thereof with two end portions hanging on the third turning element.
Thus, the blind can be lowered and raised by pulling the hanging end portions of the lift cord; the movement of the cord along the stationary support caused by the pulling action makes the turning elements turn, of which the engaging bars are separably engaged with the beads.
REFERENCES:
patent: 5092382 (1992-03-01), Fluckiger
patent: 5799715 (1998-09-01), Biro et al.
patent: 5996667 (1999-12-01), Fun
Poly Vigor Enteprises Co., Ltd.
Purol David
Rosenberg , Klein & Lee
LandOfFree
Raising device for a venetian blind does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Raising device for a venetian blind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raising device for a venetian blind will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3044772