Marine propulsion – Jet drive – Having means to increase fluid drive means efficiency
Patent
1994-12-20
1996-10-15
Brahan, Thomas J.
Marine propulsion
Jet drive
Having means to increase fluid drive means efficiency
440 46, 114270, B63H 11103
Patent
active
RE0353515
ABSTRACT:
A ride plate according to this invention is adapted to be attached to the bottom of the hull of a personal watercraft. It has a forward and a rearward axial orientation along a nominal axis of forward action of the craft. The ride plate includes a channel portion having a central portion and a pair of laterally spaced apart wall members which slant away from the central portion and from each other, thereby to form an intake chamber into which the intake port opens. The channel member is open at both ends to permit debris and excess water to leave the chamber, thereby constituting a minimized source of drag. An intake grate is incorporated into the ride plate at its forward end, having a pair of generally parallel legs, each preferably having a foil cross-section, and leaving between them, and on outside of the pair, open regions through which water can flow to the chamber.
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