US PATENT SUBCLASS 285 / 95
WITH FLUID PRESSURE SEAL

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

95WITH FLUID PRESSURE SEAL {11}
96  DF  .~> With external pressure supply {1}
98  DF  .~> Swivel with flange in socket
99  DF  .~> Coacting opposing duplicate
100  DF  .~> With expansible chamber means {1}
104  DF  .~> With separate, encased pipe-gripping means {1}
106  DF  .~> Independent supply passage
107  DF  .~> Expansible shank
108  DF  .~> Separate retainer or positioner
109  DF  .~> Expansible internal sleeve-type gasket
110  DF  .~> Flexible lip {1}
113  DF  .~> Wedged gasket

DEFINITION

Classification: 285/95

(under the class definition) Subject matter comprising sealing means responsive to the line pressure or means to

test the seal by utilization of the line pressure. Fluid pressure balancing means are found here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

306, for a coupling including a line pressure responsive essential catch.

SEE OR SEARCH CLASS

137, Fluid Handling,

217+, for anti-siphon devices, and subclasses 525+ for resilient material valve. 279, Chucks or Sockets,

20, for a fluid-conduit drill holding socket.