(under subclass 39.2) Combinations in which the quantity of the motive fluid is regulated by varying the number of combustion products generators in operation, viz., by cutting in and out one or more, but not all, of a plurality of combustion products generators.
SEE OR SEARCH THIS CLASS, SUBCLASS:
39.09, for combinations in which the operation of all combustion products generators is discontinued upon the creation of, or to prevent the creation of, dangerous operating conditions.
39.14, for starting arrangements of plants having a number of combustion products generators, wherein a fewer number than all of the generators are placed in operation during the starting cycle.
SEE OR SEARCH CLASS
123, Internal-Combustion Engines,
52, for systems for disabling some of the cylinders of an internal-combustion engine in order to vary the power output.
