DIFF Subgroup
F04B 1/20 having rotary cylinder block
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 > having rotary cylinder block
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
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
Child Classifications
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- F04B 1/2007 Arrangements for pressing the cylinder barrel against the valve plate, e.g. by fluid pressure since 2020 IPC+CPC Available in IPC and CPC
- F04B 1/2092 Means for connecting rotating cylinder barrels and rotating inclined swash plates since 2020 IPC+CPC Available in IPC and CPC