Folding rotor for an autogyro device

Details Folding rotor for an autogyro device Folding rotor for an autogyro device

2011-07-26

2011-07-26

Nguyen, Ninh H (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Radially extensible or retractible rotor working member

C416S088000, C416S142000, C416S001000

Reexamination Certificate

active

07985048

ABSTRACT:
In one embodiment, a folding rotor blade for an autogyro device comprises a plurality of connected rotor members. When the folding rotor blade is in a compressed state the folding rotor blade has a compressed length, and some of the connected rotor members are disposed in a non-parallel arrangement. When the folding rotor blade is in an extended state the folding rotor blade has an extended length, which is greater than the compressed length, and the connected rotor members are disposed in a parallel arrangement.

REFERENCES:
patent: 2120168 (1938-06-01), Ash, Jr.
patent: 2602614 (1952-07-01), Cole
patent: 2996121 (1961-08-01), Stub
patent: 3666210 (1972-05-01), Look et al.
patent: 3750982 (1973-08-01), Gear
patent: 3838940 (1974-10-01), Hollrock
patent: 4017043 (1977-04-01), Barzda
patent: 4071206 (1978-01-01), Magill
patent: 4131392 (1978-12-01), Barzda
patent: 5074753 (1991-12-01), Covington et al.
patent: 7090550 (2006-08-01), Wilkie

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