Low-profile steering nozzle for water jet propulsion system
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United States of America Patent
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-
May 6, 2003
Grant Date -
Feb 13, 2003
app pub date -
Aug 11, 2001
filing date -
Aug 11, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A water jet propulsion system has a flow-through housing with an impeller section, a convergent section having a discharge aperture, and a cup-shaped extension. An impeller is rotatable within the impeller section of the housing. A steering nozzle is pivotably mounted inside the cup-shaped extension for pivoting about an axis. The steering nozzle has an inlet opening with a width greater than its height, a laterally convergent section extending rearward from the inlet opening, and an outlet opening. Preferably the outlet opening of the steering nozzle is generally circular. The steering nozzle has a second section having a passage which is generally cylindrical or slightly convergent. The second section ends at the outlet opening. A support post extends radially outward from the steering nozzle, and a steering arm extends laterally and forward from the support post. A portion of the steering arm extends outside of and overhangs a portion of the cup-shaped extension. The steering nozzle, support post and steering arm are formed as one cast piece.
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