US PATENT SUBCLASS 415 / 146
INCLUDING WORKING FLUID FORCE RESPONSIVE VANE OR FLOW CONTROL


Current as of: June, 1999
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415 /   HD   ROTARY KINETIC FLUID MOTORS OR PUMPS

146INCLUDING WORKING FLUID FORCE RESPONSIVE VANE OR FLOW CONTROL {1}
147  DF  .~> Upstream of runner


DEFINITION

Classification: 415/146

(under the class definition) Apparatus comprising a member in the working fluid* flow conduit which member guides or regulated the flow of working fluid* and is movable from a first position towards a second position by a force caused by the flow of working fluid* acting against the member and is biased or otherwise urged towards it first position when the working fluid* stops flowing or the direction of its flow reverses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2.1+, for a device with means for controlling casing* or flow guiding means in response to natural fluid current force or direction (i.e., water or wind current).

SEE OR SEARCH CLASS

137, Fluid Handling,

455+, for line condition responsive valves and particularly subclasses 511+ for other check type or return flow preventing valves.