Recreational water craft

Details Recreational water craft Recreational water craft

1985-05-28

1987-02-10

Blix, Trygve M.

Marine propulsion

Oscillating propelling means

Fishtail motion propelling means

440 14, 416 66, B63H 1604

Patent

active

046420568

ABSTRACT:
A water craft includes a pair of spaced buoyant panels mounted to a substantially H-shaped frame. A pair of fins mounted along a central longitudinal member of the frame between the panels provides propulsion and steering control. Propulsion is maximized by means of a combined cam, linkage and telescoping support structure that varies the length of the aft fin so as to oscillate the fin in a substantially figure eight path. Further, the rigidity and flexibility of the fin may be controlled through a tension cable and hand actuator.

REFERENCES:
patent: 227491 (1980-05-01), Coulter
patent: 515883 (1894-03-01), Pelletier
patent: 2156898 (1939-05-01), Lo Giudice
patent: 3622437 (1971-11-01), Hobaica
patent: 3694836 (1972-10-01), Serra
patent: 3834343 (1974-09-01), Hopkins
patent: 3880107 (1975-04-01), Miles
patent: 3954084 (1976-05-01), Cronin
patent: 4172427 (1979-10-01), Kindred
patent: 4345903 (1986-08-01), Laser
patent: 4353321 (1982-10-01), Liu
patent: 4389195 (1983-06-01), Sohaei

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