US PATENT SUBCLASS 251 / 68
.~ Electrical trip actuation

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

66  DF  BIASED TRIP {5}
68.~ Electrical trip actuation {2}
69  DF  .~.~> Trip operated on failure of electric power
70  DF  .~.~> With electrical resetting means {1}

DEFINITION

Classification: 251/68

(under subclass 66) Subject matter wherein the means for actuating the trip is an electrical means.

(1) Note. This subclass provides for explosive actuated trip devices which employ an electrically actuated igniter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

129+, for electrically actuated valves and see the search notes thereto.