US3672425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curtain suspension devices with an electric motor drive
Assignee: Riloga Werk Julius Schmidt GmbH and Co KG
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Filing: 1970-07-16
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Granted: 1972-06-27
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Expires: 1990-07-16
Abstract
Abstract A curtain suspension device comprising an upper rail member and a lower rail member joined together and mounting a drive motor for drawing curtains supported by the device, the drive motor being mounted on one of the members and the members being so shaped that they define a space to accommodate a drive pulley arrangement to act upon draw cords for the curtains.
Inventors
- 👤 Hans Schulze-Robbecke
- 👤 Alfred Tiedtke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:55
CPC Classifications
A; A47; A47H; A47H5/00; A47H5/02; A47H5/032; A47H5/0325
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
93 words
A curtain suspension device comprising, in combination, an upper rail member; a lower rail member; means connecting said rail members in superimposed position; draw cords for effecting opening and closing curtains supported on said device; guide means for guiding said draw cords and including at least one drive pulley; motor means; and transmission means between said motor means and said drive pulley, said guide means and said transmission means being mounted on said upper rail member and said motor means being mounted on said lower rail member to facilitate assembly of the device.
Claim 2
Dependent Claim
93 words
A curtain suspension device comprising, in combination, an upper rail member; a lower rail member; means connecting said rail members in superimposed position; draw cords for effecting opening and closing curtains supported on said device; guide means for guiding said draw cords and including at least one drive pulley; motor means; and transmission means between said motor means and said drive pulley, said guide means and said transmission means being mounted on said upper rail member and said motor means being mounted on said lower rail member to facilitate assembly of the device.
Claim 3
Dependent Claim
48 words
A device as set forth in claim 1, wherein said upper and lower rail members have adjacent elongated portions forming a pair of parallel guide tracks and including curtain supporting means connected to said cords and guided on said tracks for movement in longitudinal direction of the latter.
Claim 4
Dependent Claim
48 words
A device as set forth in claim 1, wherein said upper and lower rail members have adjacent elongated portions forming a pair of parallel guide tracks and including curtain supporting means connected to said cords and guided on said tracks for movement in longitudinal direction of the latter.
Claim 5
Dependent Claim
42 words
A device as defined in claim 2, and including spacer means between said rail members for maintaining the same in spaced superimposed position, said draw cords, said guide means and said transmission means being located in the space between said rail members.
Claim 6
Dependent Claim
55 words
A device as defined in claim 3, wherein one of said rail members has a width smaller than the other rail member and wherein the other of the rail members curves at opposite sides toward opposite longitudinal edges of said one rail member so as to form with the latter a substantially closed hollow body.
Claim 7
Dependent Claim
35 words
A device as set forth in claim 3, wherein said spacer means are integral with one of said rail members and said connecting means connect the other of said rail members to said spacer means.
Claim 8
Dependent Claim
17 words
A device as defined in claim 3, wherein said connecting means form part of said spacer means.
Claim 9
Dependent Claim
49 words
A device as defined in claim 3, wherein said spacer means are connected to one of said rail members and wherein said connecting means comprise holding portions on said spacer means and complementary holding portions on the other of said rail members engaged with snap action with each other.
Claim 10
Dependent Claim
38 words
A device as defined in claim 1, wherein said motor means comprise an electromotor and a relay, and including a common mounting plate mounting said motor and said relay and being releasably connected to said lower rail member.
Claim 11
Dependent Claim
15 words
A device as defined in claim 1, wherein said transmission means comprises a gear transmission.
Claim 12
Dependent Claim
21 words
A device as defined in claim 1, wherein said guide means comprise tensioning means for maintaining said cords in taut condition.
Claim 13
Dependent Claim
36 words
A device as defined in claim 3, wherein said guide means comprise tensioning means for maintaining said cords in taut condition, said tensioning means comprising a frame adjustably mounted in the space between said rail members.
Claim 14
Dependent Claim
46 words
A device as defined in claim 11, wherein said tensioning means comprise a guide pulley mounted on a spindle carried by said frame, said spindle having an end portion projecting beyond said lower rail for facilitating positioning of said guide pulley relative to said drive pulley.
Claim 15
Dependent Claim
31 words
A device as defined in claim 1, wherein said drive pulley has a part forming cord-engaging surfaces, said part consisting of wear-resistant resilient plastics material, for instance ethylene glycol-adipic acid polyester.
Claim 16
Dependent Claim
26 words
A device as defined in claim 13, and including two disks of larger diameter than said part and arranged coaxially therewith and to opposite sides thereof.
Claim 17
Dependent Claim
30 words
A device as defined in claim 3, and including at least one limit switch in the space between said rail members and a switch-operating member on said curtain supporting means.
Claim 18
Dependent Claim
32 words
A device as defined in claim 1, wherein said motor means has a reversible electromotor and including switch means connected to said motor for reversing the direction of rotation of the same.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |