DIFF Subgroup
F04B 1/2014 Details or component parts
Introduced: January 2020
Full Title
Full titles differ between systems:
IPC:
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders > having cylinder axes coaxial with, or parallel or inclined to, main shaft axis > having rotary cylinder block > Details or component parts
CPC:
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (machines or pumps with pistons coacting within one cylinder F04B3/00) > having cylinder axes coaxial with, or parallel or inclined to, main shaft axis > having rotary cylinder block > Details or component parts
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
IPC defines codes here since 2020.
Child Classifications
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- F04B 1/2021 characterised by the contact area between cylinder barrel and valve plate since 2020 IPC+CPC Available in IPC and CPC