US PATENT SUBCLASS 137 / 405
.~.~ Oil burner fuel overflow preventing safety cut-offs

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

386  DF  LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS {11}
403  DF  .~ By weight of accumulated fluid {4}
405.~.~ Oil burner fuel overflow preventing safety cut-offs

DEFINITION

Classification: 137/405

(under subclass 403) Apparatus including a valve arranged to cut off the fuel supply to an oil burner or the like in response to a predetermined accumulation of unburned liquid fuel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

120, for control of branched flow by filling auxiliary tank.

121, for control of branched flow by filling outlet tank or receiver.

456+, for line condition responsive safety cut-offs requiring resetting.

SEE OR SEARCH CLASS

141, Fluent Material Handling, With Receiver or Receiver Coacting Means, 198+, for filling devices having feed cut-off responsive to accumulation in the receptacle being filled.

431, Combustion,

65, for a burner assembly having a control responsive to collected fuel overflow cutting off feed to the burner head.