WATER JET PROPULSION SYSTEM FOR WATERCRAFT

Title:

WATER JET PROPULSION SYSTEM FOR WATERCRAFT

Document Type and Number:

WIPO Patent Application WO/1998/057849

Kind Code:

A1

Abstract:

A water jet propulsion system of which the vertical position of jet is variable with a variation in the draft of the craft. A plurality of water jet nozzles (2, 3, 4) either differing from one another or adjustable in jet diameter are spaced vertically, and either valves (6, 7, 8) provided in water passages leading to the jet nozzles are independently controlled or the water jet nozzles (50, 60) whose jet diameters are adjustable are driven vertically.

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Inventors:

ISHIGAKI EIICHI (JP)

Application Number:

PCT/JP1998/002692

Publication Date:

December 23, 1998

Filing Date:

June 18, 1998

Export Citation:

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Assignee:

ISHIGAKI MECH IND (JP)
ISHIGAKI EIICHI (JP)

International Classes:

B63H11/10; (IPC1-7): B63H11/10

Foreign References:

JPH0939888A	1997-02-10
JPS55127295A	1980-10-01
JPS50149093A	1975-11-28

Other References:

None
See also references of EP 0918014A4

Attorney, Agent or Firm:

Miyoshi, Hidekazu (3rd floor 2-3, Toranomon 1-chom, Minato-ku Tokyo, JP)

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