Patent
   D401898
Priority
Dec 23 1996
Filed
Dec 23 1996
Issued
Dec 01 1998
Expiry
Dec 01 2012
Assg.orig
Entity
unknown
10
7
n/a
We claim the ornamental design for a variable diameter tilt rotor aircraft, as shown and described.

FIG. 1 is a top view of a variable diameter tilt rotor aircraft wherein the rotors thereof are oriented in a substantially horizontal plane for vertical take-off and landing flight;

FIG. 2 is a side view of the variable diameter tilt rotor aircraft of FIG. 1;

FIG. 3 is a front view of the variable diameter tilt rotor aircraft of FIG. 1;

FIG. 4 is a bottom view of the variable diameter tilt rotor aircraft of FIG. 1;

FIG. 5 is an aft view of the variable diameter tilt rotor aircraft of FIG. 1;

FIG. 6 is a top view of a variable diameter tilt rotor aircraft wherein the rotors thereof are oriented in a substantially vertical plane for forward flight;

FIG. 7 is a side view of the variable diameter tilt rotor aircraft of FIG. 6;

FIG. 8 is a front view of the variable diameter tilt rotor aircraft of FIG. 6;

FIG. 9 is a bottom view of the variable diameter tilt rotor air craft of FIG. 6; and,

FIG. 10 is an aft view of the variable diameter tilt rotor aircraft of FIG. 6.

Matuska, David G., Lauder, Timothy F.

Patent Priority Assignee Title
9623967, Feb 01 2014 Tiltrotor unmanned aerial vehicle
D453317, Dec 01 2000 BELL HELICOPTER RHODE ISLAND, INC ; TEXTRON INNOVATIONS, INC Quad tiltrotor
D501540, Dec 15 2003 Gutter spout
D502536, Jan 30 2004 Gutter spout
D539358, Mar 03 2006 Global Billion International, Ltd. Rotor blades for a toy helicopter
D678169, Sep 19 2011 WISK AERO LLC Aircraft
D678172, Feb 10 2012 BELL HELICOPTER TEXTRON INC Helicopter front windshields
D724001, Dec 27 2013 Elytron Aircraft LLC Joined-wing tilt-wing aircraft
D731394, Oct 24 2013 Bell Helicopter Textron Inc. Tiltrotor aircraft with fixed engines
D739335, Oct 24 2013 Bell Helicopter Textron Inc. Tiltrotor aircraft with forward-swept wings
Patent Priority Assignee Title
5096140, Sep 08 1989 Aircraft with engine pods tiltable about a transverse axis
5236149, Apr 29 1991 Rockwell International Corporation Boundary layer control device for tilt rotor configuration
5352090, Aug 07 1992 The United States of America as represented by the Administrator of the System for determining aerodynamic imbalance
5381985, Apr 23 1992 McDonnell Douglas Helicopter Co. Wingtip mounted, counter-rotating proprotor for tiltwing aircraft
226826,
D323315, May 30 1989 The Ishida Foundation Dual mode air vehicle
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 20 1996MATUSKA, DAVID G Sikorsky Aircraft CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0084770033 pdf
Dec 23 1996Sikorsky Aircraft Corporation(assignment on the face of the patent)
Dec 23 1996LAUDER, TIMOTHY F Sikorsky Aircraft CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0084770033 pdf
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