US PATENT SUBCLASS 251 / 303
.~ Biased


Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

298  DF  PIVOTED VALVES {3}
303.~ Biased


DEFINITION

Classification: 251/303

(under subclass 298) Devices in which the valve has one position which it will maintain under the influence of a constant force which comprises a biasing means, and force must be applied to the valve in order to have it take a different position.

SEE OR SEARCH CLASS

137, Fluid Handling,

520, 521 and 527.8 for direct response pivoted valves.