Hydrofoil

Details Hydrofoil Hydrofoil

1982-06-07

1985-01-15

Basinger, Sherman D.

Buoys, rafts, and aquatic devices

Water skimming or walking device

Having stabilizing surface

114127, 114140, A63C 1505

Patent

active

044936656

ABSTRACT:
A fin which can be secured in the channel of a curved fin box in a plurality of locations. The fin has a grooved flange which mates with the open channel of the fin box. One wall of the channel has a groove which aligns with the flange groove and a fastening rod is inserted therein. The fin is prevented from longitudinal movement within the channel by a tab and tab receiving. A pair of the curved fin boxes and fin are affixed to a surfboard as thruster fins. The manuverability of the surfboard is enhanced and can be varied by the repositioning of the thruster fins within the curved fin boxes. At one extreme the line of the fins is parallel to the center line of the surfboard, and at the other extreme the thruster fins are toed-in and form equally but oppositely directed angles with respect to the center line.

REFERENCES:
patent: 2068921 (1937-01-01), Leigh
patent: 3308493 (1967-03-01), Lambach
patent: 3585663 (1971-06-01), Johnson
patent: 3802374 (1974-04-01), Brown
patent: 4253209 (1981-03-01), Carn
patent: 4320546 (1982-03-01), Knox
patent: 4377124 (1983-03-01), Guigan

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