Watercraft having a jet propulsion system with improved...

Details Watercraft having a jet propulsion system with improved... Watercraft having a jet propulsion system with improved...

2005-03-29

2005-03-29

Avila, Stephen (Department: 3617)

Marine propulsion

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

C440S038000, C440S047000

Reexamination Certificate

active

06872105

ABSTRACT:
A watercraft, equipped with a jet propulsion system with improved efficiency of operation is disclosed. Structures are disposed within a water passage of the jet propulsion system at a position upstream of the jet propulsion unit that modulate the amount of water that is allowed to pass through the water passage. The structures can be a flexible fluid filled bag, an adjustable ride plate, and an additional water passage. Each of the structures allow a greater amount of water into the water passage during acceleration than during constant speed travel of the watercraft.

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