JPS5675297A - Water-jet propulsion device - Google Patents

Water-jet propulsion device

Info

Publication number
JPS5675297A
JPS5675297A JP15159779A JP15159779A JPS5675297A JP S5675297 A JPS5675297 A JP S5675297A JP 15159779 A JP15159779 A JP 15159779A JP 15159779 A JP15159779 A JP 15159779A JP S5675297 A JPS5675297 A JP S5675297A
Authority
JP
Japan
Prior art keywords
nozzle
bucket
opening
facing walls
backward
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15159779A
Other languages
Japanese (ja)
Inventor
Yoshiaki Kobayashi
Masayasu Fukazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Marine Co Ltd
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Sanshin Kogyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yamaha Motor Co Ltd, Sanshin Kogyo KK filed Critical Yamaha Motor Co Ltd
Priority to JP15159779A priority Critical patent/JPS5675297A/en
Publication of JPS5675297A publication Critical patent/JPS5675297A/en
Pending legal-status Critical Current

Links

Landscapes

  • Ship Loading And Unloading (AREA)

Abstract

PURPOSE: To prevent the entering of pebbles and gravel into a captioned device by providing a forward-backward switch bucket to open and close the rear opening of a steering nozzle with facing walls and bringing the facing walls opposite the upper and lower opening ends of the steering nozzle in the closed state of the switch bucket.
CONSTITUTION: When a forward-backward switch bucket 32 is turned to close the rear opening of a steering nozzle 23, the water running backward in the nozzle 23 is dashed to the inside of the bucket 32, and conducted reversely as arrows show along the insides of expanded parts 41aW41d. These reverse jet streams are introduced into a back injection nozzle 27 through connecting ports 26 and 26, and jetted out from the opening of the nozzle obliquely downward to the front. A ship is given a backward propulsion as their reaction force. At this stage, since facing walls 38a and 38b of the bucket 32 are brought opposite the opening ends 29a and 29b of the nozzle 23, even if pebbles, gravel, or the like eat into their gaps, the opening ends 29a and 29b and the facing walls 38a and 38b are made to cross each other vertically by the opening operation of the bucket 32, and pebbles, gravel, or the like are dropped downward without causing the gnawing between the bucket 32 and the nozzle 23.
COPYRIGHT: (C)1981,JPO&Japio
JP15159779A 1979-11-22 1979-11-22 Water-jet propulsion device Pending JPS5675297A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15159779A JPS5675297A (en) 1979-11-22 1979-11-22 Water-jet propulsion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15159779A JPS5675297A (en) 1979-11-22 1979-11-22 Water-jet propulsion device

Publications (1)

Publication Number Publication Date
JPS5675297A true JPS5675297A (en) 1981-06-22

Family

ID=15521995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15159779A Pending JPS5675297A (en) 1979-11-22 1979-11-22 Water-jet propulsion device

Country Status (1)

Country Link
JP (1) JPS5675297A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213599A (en) * 1984-04-06 1985-10-25 Mitsuo Kobayashi Simple type jet propelling device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213599A (en) * 1984-04-06 1985-10-25 Mitsuo Kobayashi Simple type jet propelling device
JPH0347238B2 (en) * 1984-04-06 1991-07-18 Mitsuasa Kobayashi

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