US PATENT SUBCLASS 122 / 242
.~ Capillary

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

235.11  DF  WATER TUBE {52}
242.~ Capillary {1}
243  DF  .~.~> Fluid fuel

DEFINITION

Classification: 122/242

(under subclass 235) Devices whose tube passages have an extremely small cross-sectional area as compared with their length.

SEE OR SEARCH THIS CLASS, SUBCLASS:

39, for boilers whose water is heated by passing over the heating surface in a thin film.

40+, for similar structure in flasher types boilers.

260, for flat-tube boilers.

501+, for water tubes containing a displacing element, that renders the tube similar in action to a capillary tube.