DIFF Subgroup
F01B 25/02 Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Regulating, controlling or safety means > Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity
CPC:
Regulating, controlling or safety means (controlling combustion engines F02D) > Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
Child Classifications
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- F01B 25/12 Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted IPC+CPC Available in IPC and CPC