US PATENT SUBCLASS 405 / 75
.~ Extracting power from moving fluid

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

52  DF  FLUID CONTROL, TREATMENT, OR CONTAINMENT {7}
75.~ Extracting power from moving fluid {2}
76  DF  .~.~> Wave or tide {1}
78  DF  .~.~> Associated with dam

DEFINITION

Classification: 405/75

Extracting power from moving fluid:

(under subclass 52) Method or apparatus for the extraction of energy from a moving body of water.

(1) Note. Hydraulic power production and claims to the combination of water-channels with motors will be found in Classes 60, Power Plants; 91, Motors: Expansible Chamber Type; 290, Prime-Mover Dynamo Plants; and 415, Rotary Kinetic Fluid Motors or Pumps.

SEE OR SEARCH CLASS

290, Prime-Mover Dynamo Plants,

43, and 54 for the combination of electric power producing means and a fluid current motor to drive the same.

416, Fluid Reaction Surfaces (i.e., Impellers), appropriate subclasses for unhoused water wheels or turbines, especially

197, for Pelton wheels.