Helicopter

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C244S00700B, C244S00700B

Reexamination Certificate

active

08033498

ABSTRACT:
A helicopter (2) comprising a body portion (4), a plurality of rotor blades (6) which are mounted for rotation with respect to the body portion (4), and a fan (8) which is mounted for rotation in an opposite direction to the direction of rotation of the rotors (6), the rotor blades (6) being such that they are spaced apart in a vertical direction, and the fan (8) being such that when it rotates it generates a torque which acts to counteract at least a part of the torque generated by the rotor blades (6) when they rotate.

REFERENCES:
patent: 1132049 (1915-03-01), Waller
patent: 1350454 (1920-08-01), Hewitt
patent: 1360933 (1920-11-01), Griffin
patent: 1414410 (1922-05-01), Haupt
patent: 1705489 (1929-03-01), Mladinich
patent: 1838248 (1931-12-01), Bourland
patent: 2111988 (1938-03-01), Percival
patent: 2806662 (1957-09-01), Yonkers
patent: 2947496 (1960-08-01), Leggett
patent: 2948490 (1960-08-01), Munoz
patent: 2996269 (1961-08-01), Parry
patent: 3018984 (1962-01-01), Rust
patent: 3041012 (1962-06-01), Gibbs
patent: 3096953 (1963-07-01), Koump
patent: 3103327 (1963-09-01), Parry
patent: 3507461 (1970-04-01), Rosta
patent: 3722830 (1973-03-01), Barber
patent: 3838835 (1974-10-01), Kling
patent: 3884431 (1975-05-01), Burrell
patent: 4184654 (1980-01-01), Herrera
patent: 4296892 (1981-10-01), Barge
patent: 4589611 (1986-05-01), Ramme et al.
patent: 4606515 (1986-08-01), Hickey
patent: D312067 (1990-11-01), Walling
patent: D430530 (2000-09-01), Milde, Jr.
patent: 6179247 (2001-01-01), Milde, Jr.
patent: 6886777 (2005-05-01), Rock
patent: 2004/0144892 (2004-07-01), Gerbino
patent: 2004/0179941 (2004-09-01), Negulescu
patent: 2005/0067527 (2005-03-01), Petersen
patent: 06416 (1911-01-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Helicopter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Helicopter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Helicopter will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4298807

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.