Water-jet steering mechanisms

Details Water-jet steering mechanisms Water-jet steering mechanisms

1982-02-24

1984-02-21

Blix, Trygve M.

Marine propulsion

Jet drive

Direction control for fluid jet

74498, B63H 2546

Patent

active

044327366

ABSTRACT:
The invention relates to a steering mechanism for a water-jet propelled craft having a rotatable propulsion nozzle. The mechanism comprises a fine steering control and a coarse reversal control. The controls rotate the nozzle via a differential gearbox consisting of four meshed bevel gears rotatable in bearings within a gear cage. The steering control is operative to rotate a gearbox input shaft via a worm and pinion reduction gear, and the reversal control is operative to rotate the cage. The nozzle is connected to a gearbox output shaft. The reduction gear inhibits torque feedback from the reversal control to the steering control and torque feedback from the steering control to the reversal control is inhibited by hydraulic ram actuation of the reversal control.

REFERENCES:
patent: 2301145 (1942-11-01), Russell
patent: 2832306 (1958-04-01), Hanley
patent: 3874321 (1975-04-01), Smith

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