US3789905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical type venetian blind
Assignee: NICHI BEI BLIND KOGYO KK
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Filing: 1972-08-21
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Granted: 1974-02-05
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Expires: 1992-08-21
Abstract
Abstract An operating device for a vertical type venetian blind is set forth. A single control means is provided to feed and rotate slats of the blind. By operating the single control means, a travelling gear moves in axial direction, while rotating; and in a part of its axial movement it comes into engagement with a gear for rotating a slat rotating rod and at the ends of said axial movement it comes into means for rotating a slat feeding rod to initiate feeding of the slats.
Inventors
- 👤 Y Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:12
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/36; E06B9/361; Y; Y10; Y10S; Y10S160/00; Y10S160/90
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
151 words
In a vertical type venetian blind, including a head rail, carriages movable along said head rail, a series of slats each suspended from each of the carriages, a slat feeding rod and a slat rotating rod journalled in said head rail, means for rotating the slat feeding rod to successively feed the carriages to open and close the blind and means for rotating the slat rotating rod to rotate the slats about their vertical axes to adjust shielding effect, an operating device comprising a travelling gear for axial movement while rotating on an axis in parallel with the slat feeding and rotating rods, a gear on said slat rotating rod for meshing with said travelling gear on a part of its axial movement and means on said slat feeding rod for engaging with said travelling gear at the end of its axial movement to rotate said rod by the travelling gear.
Claim 2
Dependent Claim
151 words
In a vertical type venetian blind, including a head rail, carriages movable along said head rail, a series of slats each suspended from each of the carriages, a slat feeding rod and a slat rotating rod journalled in said head rail, means for rotating the slat feeding rod to successively feed the carriages to open and close the blind and means for rotating the slat rotating rod to rotate the slats about their vertical axes to adjust shielding effect, an operating device comprising a travelling gear for axial movement while rotating on an axis in parallel with the slat feeding and rotating rods, a gear on said slat rotating rod for meshing with said travelling gear on a part of its axial movement and means on said slat feeding rod for engaging with said travelling gear at the end of its axial movement to rotate said rod by the travelling gear.
Claim 3
Dependent Claim
29 words
A device according to claim 1, in which a male thread member is connected to an end of the slat feeding rod and the travelling gear threadedly engages thereon.
Claim 4
Dependent Claim
26 words
A device according to claim 2, including an operating gear constantly meshing with the travelling gear and adapted to be driven by a manual control means.
Claim 5
Dependent Claim
25 words
A device according to claim 2, including a wheel integrally formed on the travelling gear and adapted to be driven by a manual control means.
Claim 6
Dependent Claim
56 words
A device according to claim 1, three gear trains are arranged to transmit the rotation of the travelling gear to the slat rotating rod, one for rotating the slats substantially 90* in one direction, one for rotating the slats substantially 180* in opposite direction and one for rotating the slats substantially 90* in said one direction.
Claim 7
Dependent Claim
27 words
A device according to claim 1, in which an overload release clutch is disposed to transmit the rotation of the travellIng gear to the slat rotating rod.
Claim 8
Dependent Claim
33 words
A device according to claim 1, in which the travelling gear is threadedly engaged on a male thread member which is rotatable with said travelling gear at the end of its axial movement.
Claim 9
Dependent Claim
60 words
A device according to claim 5, including a rotatable shaft for mounting the travelling gear which is movable while rotating on substantially entire length of said shaft and freely rotatable at one end thereof, a one-way clutch interposed between said shaft and a slat feeding rod, and a one-way clutch interposed between the gear trains and the slat rotating rod.
Claim 10
Dependent Claim
59 words
A device according to claim 1, including a first shaft mounting a first travelling gear, and a second shaft mounting a second travelling gear, said first travelling gear and said second travelling gear successively moving in opposite axial directions to successively driving the gear on said slat rotating rod to opposite directions on a part of their axial movements.
Claim 11
Dependent Claim
88 words
A device according to claim 5, including a fixed shaft mounting a travelling gear which is movable while rotating on substantially entire length of said fixed shaft and freely rotatable at the both ends thereof, means for transmitting free rotation of said travelling gear at one end of the shaft to the slat feeding rod only in one rotating direction and means for transmitting free rotation of said travelling gear at the other end of said shaft to the slat feeding rod only in the other rotating direction.
Claim 12
Dependent Claim
52 words
A device according to claim 5, in which a set of gears for driving the slat rotating rod is freely mounted on said rod and kept thereon by means of an adjusting nut adjustably fixed on said rod and a spring means interposed between the nut and the set of the gears.
Claim 13
Dependent Claim
49 words
A device according to claim 11, further including a freely rotatable disc interposed between the spring means and the set of gears for driving the slat rotating rod, said gear set and disc having cooperatable projections for transmitting the rotation of the travelling gear to the slat rotating rod.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |