US PATENT SUBCLASS 137 / 474
.~.~ Lost motion between pop pressure reactor and valve


Current as of: June, 1999
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137 /   HD   FLUID HANDLING

455  DF  LINE CONDITION CHANGE RESPONSIVE VALVES {11}
469  DF  .~ Pop valves {5}
474.~.~ Lost motion between pop pressure reactor and valve


DEFINITION

Classification: 137/474

(under subclass 469) Valves in which the reactor moves relative to the valve parts and is capable of motion in some part of its range without causing movement of the valve.

(1) Note. The movable reactor usually imparts a "hammer blow" to free the valve parts.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

76, for impact type valve actuators of general application, and see the search notes thereto, and subclasses 77+ for valves with lost motion between actuator and valve, and see

the search notes to subclass 77.