US PATENT SUBCLASS 180 / 303
.~.~ Gas is product of treatment of a volatile fluid (e.g., gas is steam)

Current as of: June, 1999
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180 /   HD   MOTOR VEHICLES

54.1  DF  POWER {19}
302  DF  .~ Including traction motor of kind driven by expansible fluid from source external of motor {1}
303.~.~ Gas is product of treatment of a volatile fluid (e.g., gas is steam) {1}
304  DF  .~.~.~> With means to condense gas discharged from motor

DEFINITION

Classification: 180/303

Gas is product of treatment of a volatile fluid (e.g., gas is steam):

(under subclass 302) Vehicle wherein the expansible gas is obtained by subjecting one of a particular class of fluids, while in a liquid state (e.g., water), to a change in pressure and/or temperature, thereby causing the liquid to vaporize.

SEE OR SEARCH THIS CLASS, SUBCLASS:

36+, for a vehicle propelled by a motor driven by steam, but wherein the vehicle is primarily a pulling device rather than a load-transporting means.

310, for a vehicle having means to generate steam for a propulsion purpose, but lacking the motor of this subclass (303).

SEE OR SEARCH CLASS

60, Power Plants,

668, for a power plant comprising means to increase the energy of a motive fluid by the indirect addition of heat thereto plus a motor actuated by the fluid, and wherein is

further included means dependent upon vehicle motion, vehicle traction, or vehicle body structure, provided that no other locus exists for such a plurality of means. 91, Motors: Expansible Chamber Type, appropriate subclasses for a steam motor adapted for use with a vehicle.

122, Liquid Heaters and Vaporizers,

3, for a boiler plant adapted for use with a vehicle.