US PATENT SUBCLASS 285 / 101
.~.~ Piston-type reactor

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

95  DF  WITH FLUID PRESSURE SEAL {11}
100  DF  .~ With expansible chamber means {1}
101.~.~ Piston-type reactor {2}
102  DF  .~.~.~> With line pressure-responsive catch
103  DF  .~.~.~> Side slide

DEFINITION

Classification: 285/101

(under subclass 100) Devices in which a piston with a restricted orifice is slidably mounted in the flow path and is forced by the line flow against a gasket to make or enhance the seal.