US PATENT SUBCLASS 137 / 625.39
.~.~.~.~.~.~ Sequential opening or closing of serial ports in single flow line

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

561 R  DF  SYSTEMS {32}
625  DF  .~ Multi-way valve unit {12}
625.28  DF  .~.~ Dividing into parallel flow paths with recombining {4}
625.33  DF  .~.~.~ Reciprocating {2}
625.37  DF  .~.~.~.~ Piston {1}
625.38  DF  .~.~.~.~.~ With internal flow passage {1}
625.39.~.~.~.~.~.~ Sequential opening or closing of serial ports in single flow line

DEFINITION

Classification: 137/625.39

(under subclass 625.38) Subject matter including sequential opening or closing of serial ports in a single flow line.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

210, for sequential opening or closing of serial ports without dividing and recombining the flow.