For those of you who wonder how it was done and/or want to give it a try, here's how: Raymond .R. McHenry, “Spiral Jump Apparatus”, US Patent No. 3,814,021, June 4, 1974
The McHenry Spiral Jump Patent US3814021
United States Patent 3,814,021
McHenry June 4, 1974
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.
- Inventors: McHenry; Raymond R. (Williamsville, NY)
- Assignee: Calspan Corporation (Buffalo, NY)
- Appl. No.: 306240
- Filed: November 13, 1972
- 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
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- The McHenry Spiral Jump Patent US3814021
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