Quad tiltrotor

Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a top view of a quad tiltrotor of our new design having rotors in the takeoff/landing/hovering position;

FIG. 2 is a bottom view thereof;

FIG. 3 is a port side elevation view thereof;

FIG. 4 is a starboard side elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a top view of a quad tiltrotor of our new design having rotors in a flight position;

FIG. 8 is a bottom view thereof;

FIG. 9 is a port side elevation view thereof;

FIG. 10 is a starboard side elevation view thereof;

FIG. 11 is a front elevation view thereof;

FIG. 12 is a rear elevation view thereof; and,

FIG. 13 is a perspective view thereof.

Claims

The ornamental design for the quad tiltrotor, as shown and described.

Referenced Cited
U.S. Patent Documents
D392937 March 31, 1998 Brichard et al.
D394422 May 19, 1998 Magee
D401898 December 1, 1998 Lauder et al.
Other references
  • J.A. DeTore—Trends for Optimum Flying Crane Design, Oct. 1957.
  • John A. DeTore—An Investigation of Improved Flying Qualities for Tandem Rotor Helicopters, Institution of the Aerospace Sciences, Jan. 23-25, 1961.
  • L. Kingson and J. DeTore—Second European Rotorcraft and Powered Lift Aircraft Forum Paper No. 36, Tilt Rotor v/Stol Aircraft Technology, Sep. 20-22, 1976.
  • J. DeTore and S. Martin, Jr.—Multi Rotor Options for Heavy Lift, Star Technical Paper Series Dec. 3-6, 1979.
  • Scott R. Gourley—Article V-44—Flying Freight Train, pp. 66-69, Popular Mechanics Magazine, Sep. 2000.
Patent History
Patent number: D453317
Type: Grant
Filed: Dec 1, 2000
Date of Patent: Feb 5, 2002
Assignee: Bell Helicopter TEXTRON Inc. (Hurst, TX)
Inventors: John A. DeTore (Arlington, TX), Richard F. Spivey (Fort Worth, TX), Malcolm P. Foster (Fort Worth, TX), Tom L. Wood (Arlinton, TX)
Primary Examiner: Marcus A. Jackson
Attorney, Agent or Law Firms: Theodore F. Shiells, Sanford E. Warren, Jr., Gardere Wynne Sewell LLP
Application Number: 29/133,527
Classifications
Current U.S. Class: Plural Horizontal Rotors (D12/328)
International Classification: 1207;