Hydrofoil with retractable plate

Details Hydrofoil with retractable plate Hydrofoil with retractable plate

1989-09-25

1991-04-09

Basinger, Sherman

Ships

Hull or hull adjunct employing fluid dynamic forces to...

Having hydrofoil

114145A, 440 51, B63B 124

Patent

active

050055070

ABSTRACT:
A hydrofoil adapted for attachment to a boat propulsion unit. The hydrofoil defines a recessed area on its underside in which a trolling plate may be positioned. A pivot shaft couples the plate to the hydrofoil permitting upright deployment of the plate for slowing of the watercraft. A locking bar on the hydrofoil serves to engage stops on the plate to lock same in retracted and deployed positions. A control permits remote operation of the locking bar.

REFERENCES:
patent: 1576237 (1926-03-01), Dawson
patent: 2050336 (1936-08-01), Karasinski
patent: 2256898 (1941-09-01), Ehmke
patent: 2654336 (1953-10-01), Katzung et al.
patent: 2719503 (1955-10-01), Smith
patent: 3114343 (1963-12-01), Headrick et al.
patent: 3209716 (1965-10-01), Hartley
patent: 3211119 (1965-10-01), Kiekhaefer
patent: 3965838 (1976-06-01), Uht
patent: 4048940 (1977-09-01), Smith
patent: 4487152 (1984-12-01), Larson

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