Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
THRUST GENERATOR
Document Type and Number:
Japanese Patent JP2009298173
Kind Code:
A
Abstract:

To provide a thrust generator capable of converting a jet water stream of a small diameter to a water stream of a large diameter and of being provided on bow and stern end parts.

A hanging bell type nozzle 12 is bonded to a delivery port of a pump water stream, a ring 21 of a wing type cross section is arranged at the inside, and a shell type cone 22 is arranged on a central line of an inner water stream to perform flow-regulation of the delivery flow and generation of thrust force. Further, it is constituted such that a bottom part of the cone is released, a slit 24 is further provided on a shoulder part of the cone at a front side of the ring 21 and the water stream at the inside of the cone is communicated with the outer water stream. Further, the nozzle 12 is made rotatable while directing it to left and right gunwale outer plate openings, and a rotation door for closing or releasing the outer plate opening is provided interlocked with a position of the nozzle 12.


Inventors:
NAGAYAMA AKIRA
Application Number:
JP2008151345A
Publication Date:
December 24, 2009
Filing Date:
June 10, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NAGAYAMA AKIRA
International Classes:
B63H25/42; B63H1/28; B63H11/103
Attorney, Agent or Firm:
Masayuki Tsukiyama