US PATENT SUBCLASS 440 / 66
.~ Having means to control flow around propeller

Current as of: June, 1999
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440 /   HD   MARINE PROPULSION

49  DF  SCREW PROPELLER {12}
66.~ Having means to control flow around propeller {3}
67  DF  .~.~> Nozzle (Kort-Type)
68  DF  .~.~> Hull channel {1}
70  DF  .~.~> Hull concavity

DEFINITION

Classification: 440/66

Having means to control flow around propeller:

(under subclass 49) Device wherein a structure is provided, mounted, or located in the vicinity of the propeller to regulate the stream of fluid around the propeller.

SEE OR SEARCH CLASS

415, Rotary Kinetic Fluid Motors or Pumps, for flow control surfaces when no significant vessel structure is claimed.