US PATENT SUBCLASS 251 / 149.7
.~.~.~.~ Contact only, or friction, joint

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

142  DF  WITH CORRELATED FLOW PATH {9}
149  DF  .~ Valve operated by joining flow path sections {1}
149.1  DF  .~.~ Joining motion includes linear valve operating component {5}
149.6  DF  .~.~.~ Motion opposed by valve spring {1}
149.7.~.~.~.~ Contact only, or friction, joint

DEFINITION

Classification: 251/149.7

(under subclass 149.6) Subject matter wherein no means, other than that which will release upon application of excessive forces, is included for holding the flow path sections against the spring bias.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings,

9, and 304 for contact only and for friction detent type pipe joints respectively.