Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Preventing or minimising internal leakage of working fluid, e.g. between stages

CPC: Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J )

Full titles differ between systems:

IPC:

Preventing or minimising internal leakage of working fluid, e.g. between stages

CPC:

Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J )

CPC subdivides this area 3x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

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F01D 11/001 CPC only CPC only
F01D 11/003 CPC only CPC only
F01D 11/005 +1 CPC CPC only CPC only
F01D 11/02 by non-contact sealings, e.g. of labyrinth type (for sealing space between rotor blade tips and stator F01D11/08) +1 CPC IPC+CPC Available in IPC and CPC
F01D 11/08 for sealing space between rotor blade tips and stator (specially-shaped blade tips therefor F01D5/20) IPC+CPC Available in IPC and CPC

Class F01,2013–2023, worldwide · Source: EPO PATSTAT

Class F01,2013–2023, worldwide · Source: EPO PATSTAT