Title:
PROPULSION UNIT OF SMALL SHIP
Document Type and Number:
Japanese Patent JP2019001387
Kind Code:
A
Abstract:
To provide a propulsion unit of a small ship using a cylinder having a piston reciprocating in a tube push out water backward in both the forward motion and the backward motion.SOLUTION: A propulsion unit is composed by providing a front chamber side input unit 731 and a front chamber side output unit in a front chamber 73 of a cylinder 7, and a rear chamber side input unit 741 and a rear chamber side output unit in a rear chamber 74. The front chamber side input unit 731 has a check valve 732 for front chamber side input which is opened in water, closes when a piston 72 moves forward, and opens when the piston moves backward. The front chamber side output unit has a check valve for front chamber side output which opens toward a rear side of a hull, closes when the piston moves backward, and opens when the piston moves forward. The rear chamber side input unit 741 has a check valve 732 for rear chamber side input which is opened in water, opens when the piston moves forward, and closes when the piston moves backward. The rear chamber side output unit has a check valve for front chamber side output which opens toward the rear side of the hull, closes when the piston moves backward, and opens when the piston moves forward.SELECTED DRAWING: Figure 9
Inventors:
ITANO MASAYOSHI
Application Number:
JP2017119523A
Publication Date:
January 10, 2019
Filing Date:
June 19, 2017
Export Citation:
Assignee:
MI GIKEN KK
International Classes:
B63B35/73; B63H11/06; B63H16/20
Domestic Patent References:
| JPS4851090U | 1973-07-03 | |||
| JP2014129774A | 2014-07-10 | |||
| JP2007222548A | 2007-09-06 | |||
| JPS5585397U | 1980-06-12 | |||
| JPH09277990A | 1997-10-28 | |||
| JPH0379495A | 1991-04-04 | |||
| JP2009132369A | 2009-06-18 | |||
| JP2002295365A | 2002-10-09 | |||
| JP2009120139A | 2009-06-04 | |||
| JP2012513329A | 2012-06-14 | |||
| JPH07156881A | 1995-06-20 | |||
| JP2008018885A | 2008-01-31 |
Foreign References:
| US20080132127A1 | 2008-06-05 | |||
| CN104443329A | 2015-03-25 |
Attorney, Agent or Firm:
Toshio Mori
Hirosaburo Mori
Atsushi Kimura
Tomohiko Kurosumi
Hideaki Tanaka
Hirosaburo Mori
Atsushi Kimura
Tomohiko Kurosumi
Hideaki Tanaka