US PATENT SUBCLASS 137 / 624.2
.~.~.~ Variable cycle

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

561 R  DF  SYSTEMS {32}
624.11  DF  .~ Programmer or timer {5}
624.18  DF  .~.~ Plural, sequential, valve actuations {2}
624.2.~.~.~ Variable cycle

DEFINITION

Classification: 137/624.2

(under subclass 624.18) Subject matter in which the sequential operations complete a single cycle of operation (e.g., open and close a valve) and means is provided for changing the cycle.