.~.~> Gas is product of treatment of a volatile fluid (e.g., gas is steam) {1}
DEFINITION
Classification: 180/302
Including traction motor of kind driven by expansible fluid from source external of motor:
(under subclass 54.1) Vehicle wherein the apparatus for producing power includes a motor of a type operated by a fluid, which is undergoing an increase in volume as the result of having been subjected to an elevation of its pressure or temperature at a location outside the motor, for imparting vehicle-propelling movement to one or more surface-engaging members of the vehicle.
(1) Note. The source of the expansible gas may or may not be claimed.
