Actively adjusting tip-clearance

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Preventing or minimising internal leakage of working fluid, e.g. between stages > for sealing space between rotor blade tips and stator > Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing > Actively adjusting tip-clearance

CPC:

Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J ) > for sealing space between rotor blade tips and stator (specially-shaped blade tips therefor F01D5/20) > Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing (rotors with blades adjustable in operation F01D7/00) > Actively adjusting tip-clearance

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1995.

Child Classifications

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F01D 11/22 by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor since 1995 IPC+CPC Available in IPC and CPC
F01D 11/24 by selectively cooling-heating stator or rotor components since 1995 IPC+CPC Available in IPC and CPC