US PATENT SUBCLASS 418 / 83
HEAT EXCHANGE OR NON-WORKING FLUID LUBRICATING OR SEALING

Current as of: June, 1999
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418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

83HEAT EXCHANGE OR NON-WORKING FLUID LUBRICATING OR SEALING {13}
84  DF  .~> With condition responsive control of non-working fluid
85  DF  .~> With heat exchange means for non-working fluid
86  DF  .~> Heat exchange by diverted incoming or outgoing working fluid
87  DF  .~> Valve regulated non-working fluid
88  DF  .~> With pump for non-working fluid
89  DF  .~> With filter for non-working fluid
90  DF  .~> Wick or absorbent material feed
91  DF  .~> Non-working fluid passage in inner working or reacting member {3}
95  DF  .~> Vent or non-seal means prevents working and non-working fluid intermix
96  DF  .~> Outer cylinder member immersed or submerged in non-working fluid
97  DF  .~> Non-working and working fluids intermix in working chamber {2}
100  DF  .~> Intermixed incoming working and non-working fluids
101  DF  .~> With coolant air impelling means or finned cylinder surface

DEFINITION

Classification: 418/83

(under the class definition) Apparatus in which there is provided means to either (1) heat or cool either the working or the nonworking fluid or any part of the device, (2) direct a fluid other than working fluid to the device or to the working fluid to provide a film or coating between adjacent surfaces of a plurality of relatively moving parts to prevent direct rubbing contact therebetween or passage of working fluid therepast or (3) at least partially immerse the device in a nonworking liquid whereby to enhance the operation of the device.

(1) Note. A lubricating or sealing agent comprising nonworking finely divided solids having flow characteristics of a fluid, performing a lubricating or sealing function under part 2 of the above definition is considered proper for classification here.