Propeller-blade pitch changing

Introduced: September 1968

Of 8 combined children, 4 exist in both systems.

4 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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B63H 2003/004 2nd only CPC only CPC only
B63H 2003/006 2nd only CPC only CPC only
B63H 3/002 CPC only CPC only
B63H 3/008 CPC only CPC only
B63H 3/02 actuated by control element coaxial with propeller shaft, e.g. the control element being rotary IPC+CPC Available in IPC and CPC
B63H 3/06 characterised by use of non-mechanical actuating means, e.g. electrical (B63H3/002 takes precedence) IPC+CPC Available in IPC and CPC
B63H 3/10 characterised by having pitch control conjoint with propulsion plant control IPC+CPC Available in IPC and CPC
B63H 3/12 the pitch being adjustable only when propeller is stationary (B63H3/002 takes precedence) IPC+CPC Available in IPC and CPC

Class B63,2013–2023, worldwide · Source: EPO PATSTAT

Class B63,2013–2023, worldwide · Source: EPO PATSTAT