US4437506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curtain drawer arrangement
Assignee: Yokota Co Ltd
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Filing: 1981-08-06
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Granted: 1984-03-20
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Expires: 2001-08-06
Abstract
Abstract A curtain drawer arrangement comprises a curtain rail and a plurality of curtain runners and a motor-driven mechanism depending therefrom. The curtain rail is provided with a lead plate having a conductive lead line of a greater width and a conductive lead line of a smaller width. Brushes are disposed in the motor-driven mechanism and engage the lead line of a greater width. Another brush is disposed in the mechanism and engages the lead line of a smaller width. A collector is connected to a reversible motor. The motor-driven mechanism is also provided with tired wheels which rotate in response to the actuation of the reversible motor. A control panel for drawing or opening the curtain is connected with both the lead lines.
Inventors
- 👤 Koichi Ogita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:30
CPC Classifications
A; A47; A47H; A47H5/00; A47H5/02; A47H5/032; A47H5/0325
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
124 words
A curtain drawer arrangement comprising: (a) a rail of generally inverted U-shape in vertical cross-section having a pair of tracks on the sides of a longitudinal opening, said U-shaped rail having therein a plurality of spaced, linearly extending conductors, (b) a motor-driven mechanism comprising: (i) a motor beneath said rail and having an output shaft, (ii) a travelling portion in said rail having driven wheels engaging said pair of tracks, having resiliently urged means engaging said rail above said tracks for urging said wheels against said tracks, and having brushes engaging sad conductors in said rail, (iii) means connecting said motor to said travelling portion, and (iv) power transmission means including gears for transmitting power from said motor output shaft to said driven wheels.
Claim 2
Dependent Claim
124 words
A curtain drawer arrangement comprising: (a) a rail of generally inverted U-shape in vertical cross-section having a pair of tracks on the sides of a longitudinal opening, said U-shaped rail having therein a plurality of spaced, linearly extending conductors, (b) a motor-driven mechanism comprising: (i) a motor beneath said rail and having an output shaft, (ii) a travelling portion in said rail having driven wheels engaging said pair of tracks, having resiliently urged means engaging said rail above said tracks for urging said wheels against said tracks, and having brushes engaging sad conductors in said rail, (iii) means connecting said motor to said travelling portion, and (iv) power transmission means including gears for transmitting power from said motor output shaft to said driven wheels.
Claim 3
Dependent Claim
20 words
The curtain drawer arrangement of claim 1, wherein at least two driven wheels are in engagement with each said track.
Claim 4
Dependent Claim
16 words
The curtain drawer arrangement of claim 1, said resiliently urged means engaging said rail being wheels.
Claim 5
Dependent Claim
29 words
The curtain drawer arrangement of claim 3, said first and second mentioned wheels and said brushes being the only elements of said motor-driven mechanism in engagement with said rail.
Claim 6
Dependent Claim
52 words
The curtain drawer arrangement of claim 1, a plurality of curtain runners carried by said rail and having means engaging said tracks, said motor-driven mechanism placed for engaging and pushing the forefront curtain runner for effecting curtain closing movement and for successively pushing the other curtain runners for effecting curtain opening movement.
Claim 7
Dependent Claim
73 words
The curtain drawer arrangement of claim 1, said conductors comprising first and second conductors, said travelling portion comprising first and second brushes engaging said first conductor and a third brush engaging said second conductor, and motor-direction determining means including said motor and control means for completing a circuit through said motor, said third brush and second conductor and through one or the other of said first and second brushes, and said first conductor.
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) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |