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Patent Searching and Data


Title:
WINGLESS, PERSONAL AIR TRANSPORT
Document Type and Number:
WIPO Patent Application WO/2000/047470
Kind Code:
A2
Abstract:
A wingless personal air transport comprises two main sections: First, a substantially horizontal circular inner platform (12) is provided with its outer extremity having a first diameter D1. This inner platform (12) has a seat (22) for carrying at least one person (29, 30) and a shroud forming a smooth upper surface extending outward and downward to its outer extremity. Second, a substantially horizontal annular outer platform (14) is arranged coaxially with the inner platform (12). This outer platform (14) has a central opening with a second diameter D2 and a shroud forming a substantially smooth upper surface extending inward and downward into its central opening. The second diameter D2 is greater than said first diameter D1. Preferably at least five thrusters (18, 20) are arranged in the space between the platforms (12, 14) to provide a downward thrust of air, and a clear plastic hemispherical bubble is arranged on top of the inner platform to protect the passengers (29, 30) and provide for smooth air flow.

Inventors:
Milde Jr., Karl F. (752 Union Valley Road Mahopac, NY, 10541, US)
Application Number:
PCT/US2000/002456
Publication Date:
August 17, 2000
Filing Date:
February 01, 2000
Export Citation:
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Assignee:
Milde Jr., Karl F. (752 Union Valley Road Mahopac, NY, 10541, US)
International Classes:
B64C29/00; (IPC1-7): B64C/
Foreign References:
US3082977A1963-03-26
US3614030A1971-10-19
US3640489A1972-02-08
US3933325A1976-01-20
US4457476A1984-07-03
US5239830A1993-08-31
US2282612A1942-05-12
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Claims:
AMENDED CLAIMS [received by the International Bureau on 26 September 2000 (26.09.00); original claim I amended; new claims 36-40 added; remaining claims unchanged (3 pages)]
1. A wingless, personal air transport (PAT) comprising, in combination: (a) a substantially horizontal circular inner platform with its outer extremity having a first diameter D1, said inner platform having a seat for carrying at least one person and having a shroud forming a smooth upper surface extending outward and downward to said outer extremity; and (b) a plurality N of independently powered thrusters distributed around a circle substantially equidistant from each other, each of said thrusters being attached to said inner platform, outside of said outer extremity, and arranged to produce upward thrust in a substantially vertical axis, wherein N > 5.
2. The PAT defined in claim 1, wherein N > 10.
3. The PAT defined in claim 1, further comprising a substantially horizontal annular outer platform arranged coaxially with said inner platform, said outer platform having a central opening with a second diameter D2 and having a shroud forming a substantially smooth upper surface extending inward and downward into said central opening ; said second diameter D2 being greater than said first diameter D1 and forming a space between said inner and outer platforms; wherein said thrusters are arranged in said space.
Description:
whereby said first and second engines operate in synchronism with their respective drive shafts rotating in opposite directions.

35. The prime mover defined in claim 34, wherein said transmission requires that said first and second shafts rotate in opposite directions at the same speed.

36. The PAT defined in claim 25, wherein said engine drives counter-rotating shafts and wherein said fan blades comprise two coaxial fans, each driven by one of said counter-rotating shafts, disposed in the space between said inner and outer platforms.

37. The PAT defined in claim 36, wherein said engine includes a prime mover comprising, in combination: (a) a first internal combustion engine having a first drive shaft extending therethrough; (b) a second internal combustion engine having a second drive shaft extending therethrough, said first and second shafts being arranged on a common axis and said second engine being capable of producing substantially equal power to that of said first engine; and (c) a transmission arranged intermediate said first and second engines and connecting said first and second shafts, said transmission requiring that said first and second shafts rotate in opposite directions, whereby said first and second engines operate in synchronism with their respective drive shafts rotating in opposite directions.

38. The PAT defined in claim 37, wherein said transmission requires that said first and second shafts rotate in opposite directions at the same speed.

39. The PAT defined in claim 36, wherein said fan blades further comprise stationary fan blades disposed in the space between said inner and outer platforms.

40. The PAT defined in claim 7, further comprising a computer coupled to said servos, said computer adjusting the throttles of said thrusters to maintain said circular platform approximately level, notwithstanding the failure of one or more thrusters.