US PATENT SUBCLASS 137 / 624.18
.~.~ Plural, sequential, valve actuations

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.~.~ Plural, sequential, valve actuations {2}
624.19  DF  .~.~.~> Plural trips or trip actuations
624.2  DF  .~.~.~> Variable cycle

DEFINITION

Classification: 137/624.18

(under subclass 624.11) Subject matter in which the actuating means causes sequential operations of a single valve or an operation of each of a plurality of valves in sequence.