US PATENT SUBCLASS 251 / 177
.~.~ Pivoted valve

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

157  DF  WITH MEANS TO INCREASE HEAD AND SEAT CONTACT PRESSURE {8}
176  DF  .~ Spring {3}
177.~.~ Pivoted valve {2}
178  DF  .~.~.~> Bifaced
179  DF  .~.~.~> Terminal

DEFINITION

Classification: 251/177

(under subclass 176) Devices the valve being of the pivoted type.