US PATENT SUBCLASS 415 / 177
INCLUDING HEAT INSULATION OR EXCHANGE MEANS (E.G., FINS, LAGGING, ETC.)

Current as of: June, 1999
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415 /   HD   ROTARY KINETIC FLUID MOTORS OR PUMPS

177INCLUDING HEAT INSULATION OR EXCHANGE MEANS (E.G., FINS, LAGGING, ETC.) {2}
178  DF  .~> Working fluid on at least one side of heat exchange wall {1}
180  DF  .~> Cooling fluid contacts shaft, seal or bearing

DEFINITION

Classification: 415/177

(under the class definition) Apparatus comprising means (1) to interchange heat between an apparatus part or the working fluid* and another part or fluid or (2) in contact with an apparatus part to reduce the transfer of heat from the part through the means.

(1) Note. Included under (1) of this definition is a fin or rib which increases the area of heat transfer, or direct

contact of a part with a fluid for heating or cooling, or passage of working fluid* at different temperatures on both sides of a wall.

SEE OR SEARCH THIS CLASS, SUBCLASS:

175, for a device in which there is means specifically provided (e.g., fan, pump, valve) to positively move or control movement of a heat exchange medium.