with actuating or actuated elements at the inner ends of the cylinders

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Multi-cylinder machines or pumps characterised by number or arrangement of cylinders > having cylinders in star- or fan-arrangement > with actuating or actuated elements at the inner ends of the cylinders

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 cylinders in star- or fan-arrangement > with actuating or actuated elements at the inner ends of the cylinders

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 2020.

Child Classifications

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F04B 1/0531 with cam-actuated distribution members since 2020 IPC+CPC Available in IPC and CPC
F04B 1/0535 the piston-driving cams being provided with inlets and outlets since 2020 IPC+CPC Available in IPC and CPC
F04B 1/0536 with two or more serially arranged radial piston-cylinder units since 2020 IPC+CPC Available in IPC and CPC