US PATENT SUBCLASS 239 / 533.9
.~.~.~ Spring type or biased regulator*

Current as of: June, 1999
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239 /   HD   FLUID SPRINKLING, SPRAYING, AND DIFFUSING

533.1  DF  FLUID PRESSURE RESPONSIVE DISCHARGE MODIFIER* OR FLOW REGULATOR* {3}
533.2  DF  .~ Fuel injector or burner {1}
533.3  DF  .~.~ Having flow regulator* for reciprocating piston engine {7}
533.9.~.~.~ Spring type or biased regulator*

DEFINITION

Classification: 239/533.9

(under subclass 533.3) Device wherein (a) the flow regulator comprises a body of resilient, deformable material, or (b) the regulator is biased to a discharge preventing position by a resilient biasing means having a particularly defined structure or operating characteristic.

(1) Note. Part (b) of this definition requires that the resilient biasing means consists of more than a simple coil spring of indeterminate specifications.