US PATENT SUBCLASS 431 / 256
.~ Switch or electrode of igniter moved by valve element or operator

Current as of: June, 1999
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431 /   HD   COMBUSTION

254  DF  ELECTRICAL OR MECHANICAL IGNITER CORRELATED WITH BURNER FEED {2}
256.~ Switch or electrode of igniter moved by valve element or operator {1}
257  DF  .~.~> Make and break electrode moved

DEFINITION

Classification: 431/256

(under subclass 254) Apparatus in which a portion of a valve controlling burner feed, or the mechanical means by which the valve is activated, acts to close an electrical circuit in which the igniter is connected.