F01D 17/20 Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted (sensing elements alone F01D17/02; final actuators alone F01D17/10)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
CPC: Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted (sensing elements alone F01D17/02; final actuators alone F01D17/10)
Full Title
Full titles differ between systems:
Regulating or controlling by varying flow > Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
Regulating or controlling by varying flow (for reversing F01D1/30; by varying rotor-blade position F01D7/00; specially for starting F01D19/00; shutting-down F01D21/00; regulating or controlling in general G05 ) > Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted (sensing elements alone F01D17/02; final actuators alone F01D17/10)
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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- F01D 17/22 the operation or power assistance being predominantly non-mechanical IPC+CPC Available in IPC and CPC