Parallel-operated hydraulic motor type stern propulsion apparatus for boats and hydraulic system for controlling the same

Abstract

Disclosed herewith is a parallel-operated motor type stern propulsion apparatus for boats and hydraulic system. The stern propulsion apparatus includes a transom box disposed at the stern of a boat. A propulsion body situated in the transom body to be lifted and steered. The propulsion body includes an upper body supported by a lifting shaft transversely fitted into the transom box, a yoke connected to the lower body, and two lower bodies each attached to each of the lower ends of the yoke. Two hydraulic motors are each positioned in a lower body and each connected to a propeller. Lifting cylinders are attached to the transom box for lifting the propulsion body around the lifting shaft. A steering cylinder is attached to the transom box for steering the propulsion body around a steering pin attached to the lifting shaft to the right and left.

Dependencies are inferred from the claim text.