Ship's drive with trolling device

Details Ship's drive with trolling device Ship's drive with trolling device

1991-06-18

1992-12-15

Barefoot, Galen

Marine propulsion

Means to control the supply of energy responsive to a sensed...

44 75, F16D 3902

Patent

active

051711702

ABSTRACT:
The present invention relates to a ship's drive having a transmission which is arranged between the engine and the propeller which has hydraulically controllable, and optionally actuatable forward and reverse clutches, as well as a trolling device provided with a pressure reduction valve. In order to create a ship's drive which has a trolling device and, by simple means and at little expense, which prevents destruction of the clutches as a result of erroneous operation and permits reliable maneuvering of a ship in every condition of operation of the trolling device, the pressure-reduction valve of the trolling device has an electro-hydraulic control unit and that, between the pressure reduction valve and at least one of the clutches, a valve is arranged which is hydraulically in communication with the pressure reduction valve and is connected to the pressurized oil line. A non-return valve is arranged between a feed line to the clutch and a rapid-vent line. The device thus prevents operation of the trolling device in an unsafe operating region in a fail-safe manner.

REFERENCES:
patent: 3887048 (1975-06-01), Jahnel et al.

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