Patent ID: 11981407

Abstract:
A hydraulic steering device for boats, vessels or the like, includes a hydraulic pump coupled to a drive motor to feed a drive fluid alternately according to two flow directions; a hydraulic actuating cylinder connected to the delivery and return of the pump; and a fluid flow distributor switching the connection of the delivery and suction of the pump alternatively to one of two inlets/outlets of the cylinder communicating with one of two chambers of the cylinder. The actuating cylinder is mechanically articulated to a steering member, which determines direction change by modifying its orientation relative to an axis of the boat, the vessels or the like, preferably to a longitudinal axis, the modification of steering member orientation being implemented by the actuating cylinder according to the supply of the drive fluid to the cylinder caused by operation of the pump. The motor has inputs for a power supply signal to drive the pump to supply fluid flow according to one of the two predetermined directions of flow.