Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Reexamination Certificate
2009-07-16
2011-11-08
Collins, Timothy D (Department: 3644)
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
Reexamination Certificate
active
08052081
ABSTRACT:
A rotary wing aircraft apparatus includes a body and a rotor pair connected to the body by an arm. The rotor pair has an upper rotor driven by an upper motor and rotating about an upper rotor axis and a lower rotor driven by a lower motor and rotating about a lower rotor axis. The upper and lower rotor axes are tilted with respect to each other. Tilting the axes away from the arm increases the distance from the rotor blades to the arm, and decreases the risk of the blades of the rotor contacting the arm. In an aircraft with a plurality of arms extending from the body, and a rotor assembly connected to each arm, the arms can be pivoted from a flying position, where the arms extend laterally outward to a folded position where the arms are positioned substantially parallel and adjacent to each other.
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Boeing CH-47 Chinook—Wikipedia Article, 19 Pages (http://en.wikipedia.org/wiki/Boeing—CH-47—Chinook).
Boeing CH-47 Chinook—Wikipedia Article, 19 Pages (http://en.wikipedia.org/wiki/Boeing—CH-47—Chinook), Jun. 13, 2007.
U.S. Appl. No. 12/230,119, filed Aug. 22, 2008; Dragan et al.
Dragan Zenon
Olm Orville
Wood Greg
Collins Timothy D
Draganfly Innovations Inc.
Nixon & Vanderhye P.C.
Stehle Jamie S
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