The Astro-Spiral Jump Patent

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  United States Patent	3,814,021
  McHenry	June 4, 1974

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  SPIRAL JUMP STUNT APPARATUS
  
  Abstract

  Spiral jump stunt apparatus, either in full scale version or toy version, in which a wheeled vehicle takes off from a ramp so constructed as to impart roll, pitch and lift impulses to the vehicle as it assumes free flight to cause the vehicle to spiral while jumping a gap between such take-off ramp and a receiving ramp on which the vehicle lands on its wheels.

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  Inventors:	McHenry; Raymond R. (Williamsville, NY)
  Assignee:	Calspan Corporation (Buffalo, NY)
  Appl. No.:	306240
  Filed:	November 13, 1972

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  Current U.S. Class:	104/69 ; 446/444; 472/128
  Current International Class:	A63G 31/00 (20060101)
  Field of Search:	104/54,69,70,134 272/1B 46/43,216,243P

• US Patent Office - the link on the US Patent Office site to US Patent No. 3,814,021, June 4, 1974
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