Patent US3948467A successfully refreshed from Google Patents.
US3948467A
Expired / Lapsed
US
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Device for position stabilization
Assignee: Dornier GmbH
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Filing: 1974-11-18
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Granted: 1976-04-06
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Expires: 1994-11-18
Abstract
Abstract A device for position stabilization of a take-off and landing platform for aircraft, which comprises a forcibly-guided parallelogram linkage adapted to be rotatably mounted on a mobile carrier, a take-off and landing platform rigidly connected with and parallel to the upper parallelogram part, and an operating device rotatably connected at each end between the carrier and one of the side parts of the parallelogram linkage.
Inventors
- 👤 Jochen Krusius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:26
CPC Classifications
B; B64; B64F; B64F3/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
A device for position stabilization of a take-off and landing platform for aircraft, which comprises a forcibly-guided parallelogram linkage means having upper, lower, and side parts and adapted to be rotatably mounted on a mobile carrier, a take-off and landing platform connected with and parallel to the upper parallelogram part, and operating means rotatably connected at its ends to said carrier and to one of the side parts of the parallelogram linkage.
Claim 2
Independent Claim
72 words
A device for position stabilization of a take-off and landing platform for aircraft, which comprises a forcibly-guided parallelogram linkage means having upper, lower, and side parts and adapted to be rotatably mounted on a mobile carrier, a take-off and landing platform connected with and parallel to the upper parallelogram part, and operating means rotatably connected at its ends to said carrier and to one of the side parts of the parallelogram linkage.
Claim 3
Dependent Claim
15 words
A device according to claim 1 in which said operating means is an operating cylinder.
Claim 4
Dependent Claim
72 words
A device according to claim 1 including, between said platform and said upper parallelogram part, a second part having a curved guide rail means at the underside thereof, said guide rail means being movable between a pair of roller means mounted on a guide arm connected with the lower parallelogram part, shearing hinge means connecting said second part with said upper parallelogram part, and said platform being connected to said second part.
Claim 5
Dependent Claim
100 words
A device according to claim 1 including, between said platform and said upper parallelogram part, a second parallelogram linkage composed of a pair of shearing hinges having upper and lower shearing hinge arms rotatably connected with said upper parallelogram part and movable with each other by way of pairs of toothed segments, platform-supporting means rotatably connected with the upper toothed segment pair, and second operating means rotatably connected at its ends to one of the lower shearing hinge arms and to an extended arm of said upper parallelogram part, said second operating means being positioned opposite said other operating means.
Claim 6
Dependent Claim
16 words
A device according to claim 4 in which said second operating means is an operating cylinder.
References Cited (Backward Citations)
US1558567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |