Floatable structure propelling mechanism

Details Floatable structure propelling mechanism Floatable structure propelling mechanism

1992-06-30

1993-03-16

Peters, Jr., Joseph F.

Amusement devices: toys

Aerodynamically supported or retarded

Ornithopter

244 28, 446 59, 446156, A63H 2700

Patent

active

051940299

ABSTRACT:
A floatable structure propelling mechanism is combined with a floatable structure filled with helium gas to propel the floatable structure for flying in the air. The floatable structure propelling mechanism comprises a pair of lateral fins supported for swing motion respectively on the opposite sides of a middle portion of the floatable structure. The driving mechanism for driving the lateral fins for swing motion alternately in opposite direcitons in a vertical plane comprises a rotative driving unit provided near the lower surface of the middle portion of the floatable structure. The rotative driving unit includes a double crankshaft which is rotated by the driving unit, first connecting rods fixed to the lateral fins, respectively, and second connecting rods interconnecting the crank pin portions of the double crankshaft and the free ends of the first connecting rods, respectively. The lateral fins include a framework which permits flexing of each lateral fin to relax the fin and decrease resistance to air during upward motion. During downward motion, the framework of the lateral fins attains a rigid configuration to tension the lateral fin and provide improved lift for propelling the floatable structure for flying.

REFERENCES:
patent: 1758178 (1930-05-01), Slinn
patent: 1907887 (1933-05-01), Spencer
patent: 3728814 (1973-04-01), Ruston
patent: 4195438 (1980-04-01), Dale et al.
patent: 4729748 (1988-03-01), Van Raymbake

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