(under subclass 53) Subject matter including means for conveying or facilitating the conveyance of liquid to or from the resistance element or terminals, or to structure in heat conducting relation to the element to carry away at least part of the heat produced by the element or terminals by motion of the liquid.
(1) Note. A mere heat conducting liquid without motion or circulation of the liquid is not classified here, but in subclass 231 below. Where structure is claimed for controlling or directing the heat to the liquid, or controlling or utilizing the heated liquid for heating purposes as opposed to mere dissipation of the heat, classification is elsewhere (see search notes below). See also (1) Note under subclass 53 above.
SEE OR SEARCH THIS CLASS, SUBCLASS:
57, for resistors with vented or ventilating casing or housings.
231, for resistors generally incased in a liquid. See also (1) Note above.
SEE OR SEARCH CLASS
165, Heat Exchange, 104.19+, for a residual system exchanging heat through a recycling fluid.
219, Electric Heating,
280+, for electric fluid heaters. See also (1) Note above.
333, Wave Transmission Lines and Networks,
22, for dissipating terminations for long lines involving a liquid coolant.
