DIFF Subgroup
F04B 1/30 of machines or pumps with rotary cylinder blocks
Introduced: September 1968
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 > Control > of machines or pumps with rotary cylinder blocks
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 > Control > of machines or pumps with rotary cylinder blocks
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
IPC defines codes here since 1995.
Child Classifications
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- F04B 1/306 by turning the swash plate, e.g. with fixed inclination since 2020 IPC+CPC Available in IPC and CPC
- F04B 1/32 by varying the relative positions of a swash plate and a cylinder block since 1995 IPC+CPC Available in IPC and CPC