(under subclass 200.1) Apparatus in which the means for producing the motive fluid comprises an intermittently operating combustion chamber having means permitting unidirectional flow of oxidizer or fuel to said chamber.
(1) Note. Under this definition the fuel may be caused to burn intermittently either by control of the fuel flow itself or the ignition thereof, or by intermittently admitting into the combustion chamber the air or other oxidizer which supports combustion.
SEE OR SEARCH CLASS
123, Internal-Combustion Engines,
657, for combustion chambers for internal combustion engines.