US 8,075,355 B2Granted

Marine jet propulsion steering system

AssigneeBombardier Recreational Products Inc.

InventorsFrancois Giroux, Richard Simard, Andre Denis, Marc Schuler

Life of this patent

Estimating the term…

Loading patent…

Abstract

A marine jet propulsion system has a jet pump, a venturi connected to the jet pump, and a steering nozzle rotationally mounted relative to the venturi about a first axis. The steering nozzle has a central longitudinal axis. The first axis intersects the central longitudinal axis. A first link has a first end rotationally mounted relative to the venturi about a second axis. The first link has a second end disposed generally rearwardly from the first end of the first link. A second link has a first end rotationally mounted to the first link about a third axis and a second end rotationally mounted to the steering nozzle about a fourth axis. The third axis intersects the second end of the first link. A steering arm is connected to the first link. The axes are generally parallel to each other. A watercraft having the jet propulsion system is also disclosed.

Claims19

Dependent claims

A watercraft comprising:

a hull;
a deck disposed on the hull;
an engine supported by the hull;
a jet pump connected to the hull and being operatively connected to the engine;
a venturi connected to the jet pump;
a steering nozzle rotationally mounted relative to the venturi about a first axis, the steering nozzle having a central longitudinal axis, the first axis intersecting the central longitudinal axis;
a first link having a first end rotationally mounted relative to the venturi about a second axis, the first link having a second end disposed generally rearwardly from the first end of the first link;
a second link having a first end rotationally mounted to the first link about a third axis and a second end rotationally mounted to the steering nozzle about a fourth axis, the third axis intersecting the second end of the first link, the second axis and the third axis being disposed on a same side of the central longitudinal axis;
a steering arm connected to the first link;
and
a steering assembly disposed at least in part on the deck and being operatively connected to the steering arm for rotating the steering nozzle relative to the venturi about the first axis,
the first, second, third, and fourth axes being generally parallel to each other.

9 more elements

A marine jet propulsion system comprising:

a jet pump;
a venturi connected to the jet pump;
a steering nozzle rotationally mounted relative to the venturi about a first axis, the steering nozzle having a central longitudinal axis, the first axis intersecting the central longitudinal axis;
a first link having a first end rotationally mounted relative to the venturi about a second axis, the first link having a second end disposed generally rearwardly from the first end of the first link;
a second link having a first end rotationally mounted to the first link about a third axis and a second end rotationally mounted to the steering nozzle about a fourth axis, the third axis intersecting the second end of the first link, the second axis and the third axis being disposed on a same side of the central longitudinal axis;
and
a steering arm connected to the first link,
the first, second, third, and fourth axes being generally parallel to each other.

5 more elements

Dependencies are inferred from the claim text.