US PATENT SUBCLASS 392 / 335
.~.~.~.~ With supply interlock means

Current as of: June, 1999
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392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
311  DF  .~ Fluid-in-circuit type heater {6}
324  DF  .~.~ Steam or vapor generator {2}
333  DF  .~.~.~ Manually filled tank or container {3}
335.~.~.~.~ With supply interlock means

DEFINITION

Classification: 392/335

With supply interlock means:

(under subclass 333) Subject matter wherein the tank or container includes means for preventing the flow of water into the container while the electrodes are electrically energized.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

50, for interlocking switch arrangements.

219, Electric Heating,

437, for immersible heating unit.