Patent US3878877A successfully refreshed from Google Patents.
US3878877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical blinds
Assignee: Individual
•
Filing: 1973-07-30
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Granted: 1975-04-22
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Expires: 1993-07-30
Abstract
Abstract A blind having movable and orientable slats, incorporating a set of runners connected together by a flexible link which are mounted to be movable in translation in a continuous guide and which each carry an orientable shaft bearing a blind-slat. The runners on the one hand and the shafts on the other are connected kinematically to a single control member, which is rotatable and is connected both to a pulley which drives a tensioned cord fixed to the first of the runners, and to a rod equipped with worm gears each of which meshes with a pinion on a slat-bearing shaft. A first clutch is provided between the rotatable member and the drive pulley and a second clutch is provided between the rotatable member and the rod, each clutch being in its operative position when the other is in the inoperative position and vice versa.
Inventors
- 👤 Paul Bruneau
- 👤 Gaston Nufer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:11
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/36; E06B9/362; E06B9/364; E06B9/361; Y; Y10; Y10S; Y10S160/00; Y10S160/90
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
159 words
A blind having movable and orientable slats, of the type incorporating a set of runners connected together by a flexible link which are mounted to be movable in translation in a continuous guide and which each carry an orientable shaft bearing a blind-slat, the runners on the one hand and the shafts on the other being connected kinematically to a single control member, an improvement wherein the said member is rotatable and is connected on the one hand to a pulley which drives a tensioned cord fixed to the first of the runners and, on the other to a rod equipped with worm gears each of which meshes with a pinion on a slat-bearing shaft, a first clutch being provided between the rotatable member and the drive pulley and a second clutch being provided between the rotatable member and the rod, each clutch being in its operative position when the other is in the inoperative position and vice versa.
Claim 2
Dependent Claim
159 words
A blind having movable and orientable slats, of the type incorporating a set of runners connected together by a flexible link which are mounted to be movable in translation in a continuous guide and which each carry an orientable shaft bearing a blind-slat, the runners on the one hand and the shafts on the other being connected kinematically to a single control member, an improvement wherein the said member is rotatable and is connected on the one hand to a pulley which drives a tensioned cord fixed to the first of the runners and, on the other to a rod equipped with worm gears each of which meshes with a pinion on a slat-bearing shaft, a first clutch being provided between the rotatable member and the drive pulley and a second clutch being provided between the rotatable member and the rod, each clutch being in its operative position when the other is in the inoperative position and vice versa.
Claim 3
Dependent Claim
159 words
A blind having movable and orientable slats, of the type incorporating a set of runners connected together by a flexible link which are mounted to be movable in translation in a continuous guide and which each carry an orientable shaft bearing a blind-slat, the runners on the one hand and the shafts on the other being connected kinematically to a single control member, an improvement wherein the said member is rotatable and is connected on the one hand to a pulley which drives a tensioned cord fixed to the first of the runners and, on the other to a rod equipped with worm gears each of which meshes with a pinion on a slat-bearing shaft, a first clutch being provided between the rotatable member and the drive pulley and a second clutch being provided between the rotatable member and the rod, each clutch being in its operative position when the other is in the inoperative position and vice versa.
Claim 4
Dependent Claim
159 words
A blind having movable and orientable slats, of the type incorporating a set of runners connected together by a flexible link which are mounted to be movable in translation in a continuous guide and which each carry an orientable shaft bearing a blind-slat, the runners on the one hand and the shafts on the other being connected kinematically to a single control member, an improvement wherein the said member is rotatable and is connected on the one hand to a pulley which drives a tensioned cord fixed to the first of the runners and, on the other to a rod equipped with worm gears each of which meshes with a pinion on a slat-bearing shaft, a first clutch being provided between the rotatable member and the drive pulley and a second clutch being provided between the rotatable member and the rod, each clutch being in its operative position when the other is in the inoperative position and vice versa.
Claim 5
Dependent Claim
31 words
A blind according to claim 1, wherein the first clutch is fitted with a free-wheel intended to actuate the clutch automatically after a certain number of revolutions of the rotatable member.
Claim 6
Dependent Claim
28 words
A blind according to claim 1, wherein the second clutch is fitted with a de-clutching mechanism which de-clutches after a certain number of revolutions of the rotatable member.
Claim 7
Dependent Claim
25 words
A blind according to claim 1, wherein the driving member of the first clutch is kinematically connected to the driving member of the second clutch.
Claim 8
Dependent Claim
82 words
A blind according to claim 1, wherein the rod fitted with the worm gears is supported by a bearer which can be moved along the continuous guide for the runners between an end position corresponding to the runners being closed up together at one side of the guide and a median position corresponding to the runners being spaced out along the guide, this median position being defined by a stop which is fixed to the guide along the path of the bearer.
Claim 9
Dependent Claim
33 words
A blind according to claim 5, wherein the bearar has two holes through each of which passes one of the runs of the cord, one of the holes being larger than the other.
Claim 10
Dependent Claim
12 words
A blind according to claim 1, wherein the two clutches are coaxial.
Claim 11
Dependent Claim
82 words
A blind according to claim 7, wherein the single control member comprises a central rod about which two springs are coiled at different levels, the folded ends of which are able to cooperate with radial stops on two parts which are each kinematically connected to one of the drive mechanisms for the slats, these springs locking or unlocking the said rod to the corresponding mechanism depending upon whether they are impelled in a direction in which their coils are tightened or released.
Claim 12
Dependent Claim
33 words
A blind according to claim 8, wherein the first drive mechanism includes a member capable of cooperating with a fixed part in order to immobilise it when the second drive mechanism is operating.
Claim 13
Dependent Claim
102 words
A blind according to claim 9, wherein said member is formed by at least two tongues integral with a sleeve which is subject to the action of one of the coiled springs, these tongues being opposite a fixed ring of teeth, a coil spring being inserted between the said sleeve and a disc provided with recesses in each of which is situated a ball-bearing, a bevel gear in the second drive mechanism itself having recesses which enclose the ball-bearings, the recesses having walls which are inclined in a direction at right angles to the radii of the disc and the bevel gear.
Claim 14
Dependent Claim
41 words
A blind according to claim 7, wherein the two mechanisms are each kinematically connected to the single control member by a clutch having planetary pinions, a releasable connecting member being inserted between one of the clutches and the single control member.
Claim 15
Dependent Claim
57 words
A blind according to claim 7, wherein the drive mechanism for the slat-bearing runners incorporates a pulley for a cord, this pulley being integral with a drum having an internal set of teeth meshing with planetary pinions, which themselves mesh with a pinion fastened to the single control member which passes axially and freely through the pulley.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |