Title:
舵
Document Type and Number:
Japanese Patent JP7222957
Kind Code:
B2
Abstract:
Provided is a rudder assembly producing significant thrust to reduce energy consumption of vessels during voyage. The rudder assembly is formed of first/second rudder units arranged on both sides of first/second propellers. As seen from rear, each first/second rudder unit is formed of left/right rudders arranged on the left/right of the first/second propeller. Each left/right rudder of the first/second rudder units is formed of a first left/right rudder portion extending in the right-left direction, a second left/right rudder portion curved from the left/right end of the first left/right rudder portion toward lower left/right, and a third left/right rudder portion extending downwards from the lower end of the second left/right rudder portion. The first left/right rudder portions of the first/second rudder unit are arranged spaced upwardly apart from the upper edge of the tip circle of the first/second propeller for a distance of 10-20% of the diameter of the first/second propeller.
Inventors:
Kuribayashi
Noriyuki Sasaki
Noriyuki Sasaki
Application Number:
JP2020143796A
Publication Date:
February 15, 2023
Filing Date:
August 27, 2020
Export Citation:
Assignee:
K Seven Co., Ltd.
International Classes:
B63H25/38; B63H5/07; B63H5/08
Domestic Patent References:
| JP2020090233A | ||||
| JP2020044876A | ||||
| JP2011168251A |
Attorney, Agent or Firm:
Patent Attorney Corporation Nagai International Patent Office