Patent US3659813A successfully refreshed from Google Patents.
US3659813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for docking a helicopter
Assignee: Government of France
•
Filing: 1970-04-28
•
Granted: 1972-05-02
•
Expires: 1990-04-28
Abstract
Abstract A helicopter is attached, at its center of rotation on its wheels, to a turnable coupling of a trolley. The trolley is displaceable along a worm gear mounted in a cross strut and the cross strut is driven in a linear path by a drive mechanism located beneath the surface on which the helicopter rests. The trolley is displaceable on the worm gear along a line which is angularly offset from the linear path of travel of the cross strut and preferably perpendicularly thereto. The helicopter may then be moved along any path of travel by selective combination of the rates of drive of the cross strut and the trolley thereon.
Inventors
- 👤 Jean Dominique Francois Mesnet
- 👤 Raymond Louis Le Guennec
- 👤 Georges Edouard Louis Le Dadon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:30
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/12; B64F1/125; B64F1/22; B64F1/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
Apparatus for docking a turnable and displaceable body, said apparatus comprising a deck upon which the body rests, first means engaging the body for displacing the same on said deck, second means above the deck engaged with the first means to drive the same in a first linear direction, and third means below the deck and engaging the first means to propel the same in a second linear direction independently of its drive in said first linear direction, said second direction being angularly offset from the first direction whereby the body can be displaced in any direction by selective combination of rates of drive in said first and second directions, said third means comprising a stationary rack extending in said second linear direction, a gear in mesh with said rack, a motor coupled to said gear to drive the same and cause the gear to be displaced in said second linear direction, and means coupling said gear, said second means, and said first means to produce concurrent movement thereof.
Claim 2
Dependent Claim
169 words
Apparatus for docking a turnable and displaceable body, said apparatus comprising a deck upon which the body rests, first means engaging the body for displacing the same on said deck, second means above the deck engaged with the first means to drive the same in a first linear direction, and third means below the deck and engaging the first means to propel the same in a second linear direction independently of its drive in said first linear direction, said second direction being angularly offset from the first direction whereby the body can be displaced in any direction by selective combination of rates of drive in said first and second directions, said third means comprising a stationary rack extending in said second linear direction, a gear in mesh with said rack, a motor coupled to said gear to drive the same and cause the gear to be displaced in said second linear direction, and means coupling said gear, said second means, and said first means to produce concurrent movement thereof.
Claim 3
Dependent Claim
24 words
Apparatus as claimed in claim 1, wherein said first means includes a rotatable coupling with said body to turn the body on the deck.
Claim 4
Dependent Claim
35 words
Apparatus as claimed in claim 2 comprising means connecting said third means and said second means and movable with said third means in slots provided in said deck and extending parallel to said second direction.
Claim 5
Dependent Claim
17 words
Apparatus as claimed in claim 3, wherein said first and second directions are perpendicular to one another.
Claim 6
Dependent Claim
31 words
Apparatus as claimed in claim 2, wherein said coupling has a center of rotation, and said body has a center of rotation coinciding with the center of rotation of the coupling.
Claim 7
Dependent Claim
14 words
Apparatus as claimed in claim 1, wherein said motor is driven by compressed air.
Claim 8
Dependent Claim
28 words
Apparatus as claimed in claim 1, wherein said third means comprises an additional motor coupled to the first means to propel the same in said second linear direction.
Claim 9
Dependent Claim
39 words
Apparatus as claimed in claim 1, wherein said third means further comprises a second rack, gear and motor coupled to the first means to propel the same, and further comprising means synchronizing the drive of said two displaceable motors.
Claim 10
Dependent Claim
22 words
Apparatus as claimed in claim 1, wherein said second and third means are coupled together for being driven from a common source.
Claim 11
Dependent Claim
23 words
Apparatus as claimed in claim 1, wherein said motor is connected to said gear for common displacement therewith in said second linear direction.
References Cited (Backward Citations)
US2620256A
Cited
US3473009A
Cited
US3145070A
Cited
US3258776A
Cited
US3303807A
Cited
US3291422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |