Patent ID: 6406339
Filing Date: 2002-06-18
Classification: B63B,B63H

Abstract:
A jet-driven boat comprising:an elongated john boat hull including a central longitudinal axis, a forward end defining a bow, a squared rearward end defining a stem with a transom extending upwardly thereon, and a substantially flat bottom wall; the bottom wall including keel portion extending longitudinally therealong, the keel portion including an aperture formed therethrough for drawing in water at a keel level defined by the bottom wall of the hull; a jet drive mounted on the keel portion inside the boat hull, the jet drive including an engine and a jet pump driven by the engine; the jet pump including an inlet in fluid communication with the aperture in the keel portion and a pump discharge chute extending outside of the boat hull rearwardly of the transom, the pump discharge chute having a directional nozzle pivotally connected thereto, the directional nozzle being approximately tangent to the keel level; wherein the pump is driven by an elongated pump drive shaft connected to the engine and an elongated cylindrical cleaning tube is loosely mounted on the pump drive shaft so as to extend longitudinally therealong, the cleaning tube having a longitudinal slot formed therethrough along its entire length, the slot being of a width that permits the drive shaft to be inserted laterally into the cleaning tube.