Arrangements for pressing the cylinder barrel against the valve plate, e.g. by fluid pressure

Full Title

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 > Arrangements for pressing the cylinder barrel against the valve plate, e.g. by fluid pressure