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Title:
WATER SEALING DEVICE FOR DEFLECTOR OPERATING SHAFT OF WATER JET PROPULSION UNIT
Document Type and Number:
Japanese Patent JP2014028576
Kind Code:
A
Abstract:

To provide a water sealing device of a deflector operating shaft for preventing intrusion of water into a boat through a penetration part of the deflector operating shaft, concerning a steering arrangement of a water jet propulsion unit.

A water jet propulsion unit steers a boat by controlling water jet in right and left directions using a deflector at a rear end of a discharge casing. In the unit, a water sealing device has an operating shaft 7 penetrating through an inlet flange 12 of an inlet casing, and is provided with a seal housing 21 internally provided with water sealing devices 24, 26 for preventing water from intruding into a boat through a through-hole 14 of the inlet flange 12 on an inboard side of the inlet flange 12. Thus, water sealing of the operating shaft 7 moving in the shaft direction while turning can be reliably performed, and also replacement of the water sealing devices 24, 26 can be easily conducted from the inboard side.


Inventors:
Katayama, Junichi
Application Number:
JP2012000170045
Publication Date:
February 13, 2014
Filing Date:
July 31, 2012
Export Citation:
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Assignee:
ISHIGAKI CO LTD
International Classes:
B63H11/11; B63H11/08
Domestic Patent References:
JPS548297U1979-01-19
JPH0594094U1993-12-21
JPH02283970A1990-11-21