(under subclass 39.01) Plants having a plurality of distinct motors, at least two of which are operated by a fluid under pressure.
(1) Note. Distinct motors include (1) two or more turbine rotors on a common shaft receiving combustion products, in parallel, from a common combustion products generator, or each rotor being supplied by a separate combustion products generator; (2) two or more expansible chamber cylinders supplied, in parallel, from a common combustion products generator where the cylinders are more than mere duplicates of each other; (3) a plurality of motors, on separate shafts, which may or may not deliver power to a common output shaft; (4) a plurality of turbine stages in a common housing, or in separate housings, wherein the combustion products pass through the stages in series, involving some treatment of the combustion products between stages; and (5) two or more
turbines with means whereby the turbines are selectively operable to rotate power output shaft in either direction. The means whereby the turbines are selectively operable may include one or more clutches or equivalent means to connect the turbines to the power output shaft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
39.141, for starting motors used with plants operated by products of combustion.
39.22, for plants in which an auxiliary motor controls the cycle frequency of an intermittent combustion type of combustion products generator.
698+, for motors having several modes of operation, each classifiable in different motor classes, or for multiple motors of the same class other than combustion products types. SEE OR SEARCH CLASS
415, Rotary Kinetic Fluid Motors or Pumps, appropriate subclasses for plural or multiple-stage gas turbines, per se, that does not involve combustion products generation means.
