Auxiliary rudder for a jet propulsion unit

Details Auxiliary rudder for a jet propulsion unit Auxiliary rudder for a jet propulsion unit

1975-03-24

1976-09-28

Blix, Trygve M.

B63H 1110

Patent

active

039824942

ABSTRACT:
Auxiliary rudder apparatus for a water craft having a jet propulsion pump comprising an auxiliary rudder element coupled to the craft for movement between a raised inoperative position and a lowered operative position. A hydraulic cylinder operated by water pressure is coupled to the rudder element to move the same automatically to inoperative position when the craft is driven at sufficiently high speed that the water pressure of the pump is adequate to operate the hydraulic cylinder. The hydraulic cylinder is inoperative to move the rudder element to raised position both in forward and reverse travel of the craft below this high speed.

REFERENCES:
patent: 3422788 (1969-01-01), Horan, Jr.
patent: 3478712 (1969-11-01), Fox
patent: 3613630 (1971-10-01), Jacuzzi
patent: 3728983 (1973-04-01), Ingham
patent: 3788265 (1974-01-01), Moore

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