US PATENT SUBCLASS 137 / 625.26
.~.~.~.~ Combined disk or plug and gate or piston

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}
625.2  DF  .~.~ Supply and exhaust {4}
625.25  DF  .~.~.~ Reciprocating valve {3}
625.26.~.~.~.~ Combined disk or plug and gate or piston

DEFINITION

Classification: 137/625.26

(under subclass 625.25) Devices wherein the valve unit comprises a disk or plug for controlling one port and a gate or piston for controlling another port.