US PATENT SUBCLASS 174 / 16.1
.~.~ By ventilation or gas circulation

Current as of: June, 1999
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174 /   HD   ELECTRICITY: CONDUCTORS AND INSULATORS

8  DF  WITH FLUIDS OR VACUUM {12}
15.1  DF  .~ With cooling or fluid feeding, circulating or distributing {6}
16.1.~.~ By ventilation or gas circulation {2}
16.2  DF  .~.~.~> Of bus bars or bus ducts
16.3  DF  .~.~.~> With heat sink

DEFINITION

Classification: 174/16.1

By ventilation or gas circulation:

(under subclass 15.1) Subject matter in which means are provided for ventilating a chamber or space containing gas or for circulating a gas therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

87, for insulators having apertures connecting interior space with the atmosphere.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids, appropriate subclass for apparatus for drying conductors and insulators not built in as part of the structure thereof.

361, Electricity: Electrical Systems and Devices,

382+, for cooling of plural electrical components by air or other gas. 454, Ventilation, appropriate subclass for ventilation of general application.