S-type marine rudder
OwnerSusumu Shimazakiinventor
Life of this patent
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Abstract
A marine rudder comprises a generally S-shaped rudder plate having a pair of semi-circular concave portions. The rudder plate is connected to the stern of a ship such that the semi-circular concave portions of the rudder plate are disposed on opposite sides of an axis of rotation of the propeller and in the path of a rotary flow produced by the propeller so that the semi-circular concave portions convert the rotary flow produced by the propeller to principally linear flow.
Claims17
A marine rudder for connection immediately aft of a propeller at the stern of a ship, the rudder comprising:
- a generally S-shaped rudder plate having a pair of generally semi-circular concave portions;
- and means for connecting the rudder plate to the stern of a ship immediately aft of a propeller such that the semi-circular concave portions of the rudder plate are disposed on opposite sides of an axis of rotation of the propeller and in the path of a rotary flow produced by the propeller so that the semi-circular concave portions convert the rotary flow produced by the propeller to principally linear flow.
A rudder for connection immediately aft of a rotary flow generating device at an end of a vessel, the rudder comprising:
- a plate having a pair of generally semi-circular concave portions;
- and means for connecting the plate to the end of the vessel immediately aft of the flow generating device with the semi-circular concave portions of the plate disposed in the path of a rotary flow produced by the rotary flow generating device so that the semi-circular concave portions convert the rotary flow produced by the rotary flow generating device to principally linear flow.
A rudder comprising:
- a plate having a pair of generally semi-circular concave portions for pivotal connection aft of a propeller at the stern of a ship such that the semi-circular concave portions are disposed in the path of a rotary flow produced by the propeller, the semi-circular concave portions having a shape effective to convert the rotary flow produced by the propeller to principally linear flow.
Dependencies are inferred from the claim text.