US PATENT SUBCLASS 137 / 625.13
.~.~.~ With subsequent closing of first port

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


137 /   HD   FLUID HANDLING

561 R  DF  SYSTEMS {32}
625  DF  .~ Multi-way valve unit {12}
625.12  DF  .~.~ Sequentially progressive opening or closing of plural ports {1}
625.13.~.~.~ With subsequent closing of first port {2}
625.14  DF  .~.~.~.~> Flow combining with flow dividing
625.15  DF  .~.~.~.~> Rotary {1}

DEFINITION

Classification: 137/625.13

(under subclass 625.12) Devices in which the first opened port is subsequently closed by continued movement of the valve unit.