Multi-cylinder machines or pumps characterised by number or arrangements of cylinders

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS

F04B1/00Multi-cylinder machines or pumps characterised by number or arrangements of cylinders

F04B1/005Pumps with cylinder axis arranged substantially tangentially to a circle centred on main shaft axis F04B1/02having two cylinders F04B1/04having cylinders in star- or fan-arrangement F04B1/0404Details, component parts specially adapted for such pumps F04B1/0408Pistons F04B1/0413Cams F04B1/0417consisting of several cylindrical elements F04B1/0421Cylinders F04B1/0426Arrangements for pressing or connecting the pistons against the actuated cam F04B1/043hydraulically F04B1/0435Disconnecting the pistons from the actuated cam F04B1/0439Supporting and guiding means for the pistons F04B1/0443Draining of the engine housing; arrangements dealing with leakage fluid F04B1/0448Sealing F04B1/0452Particularities relating to the distribution members F04B1/0456to cylindrical distribution members F04B1/0461to conical distribution members F04B1/0465to plate-like distribution members F04B1/047with an actuating or actuated element at the outer ends of the cylinders F04B1/0472with cam-actuated distribution members F04B1/0474with two or more series radial piston-cylinder units F04B1/0476directly located side-by-side F04B1/0478Coupling of several cylinder-barrels F04B1/053with an actuating or actuated element at the inner ends of the cylinders F04B1/0531with cam-actuated distribution members F04B1/0533each machine piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit F04B1/0535the piston-driving cam being provided with an inlet and an outlet F04B1/0536with two or more series radial piston-cylinder units F04B1/0538directly located side-by-side F04B1/06Control F04B1/063by using a valve in a system with several pumping chambers wherein the flow-path through the chambers can be changed F04B1/066by changing the phase relationship between the actuating cam and the distributing means F04B1/07by varying the relative eccentricity between two members F04B1/08regulated by delivery pressure F04B1/10the cylinders being movable F04B1/107with an actuating or actuated element at the outer ends of the cylinders F04B1/1071with rotary cylinder block F04B1/1072with cylinder block and actuating cam rotating together F04B1/1074with two or more series radial piston-cylinder units F04B1/1075with cylinder block and actuating cam both rotating F04B1/1077directly located side-by-side F04B1/1078with cylinder block and actuating cam both rotating F04B1/113with an actuating or actuated element at the inner ends of the cylinders F04B1/1133with rotary cylinder block F04B1/1136the rotary cylinder being provided with only one piston, reciprocating within the cylinder F04B1/12having cylinder axes coaxial with, or parallel or inclined to main shaft axis F04B1/122Component parts, details F04B1/124Pistons F04B1/126Piston shoe retaining means F04B1/128Driving means F04B1/14having stationary cylinders F04B1/141Component parts F04B1/143Cylinders F04B1/145Housings F04B1/146Swash plates or actuating elements F04B1/148Swash plate or actuating element bearing means or driving axis bearing means F04B1/16having two or more sets of cylinders or pistons F04B1/18having self-acting distribution members F04B1/182Check valves F04B1/184Cylindrical distribution members F04B1/186Conical distribution members F04B1/188Plate-like distribution members F04B1/20having rotary cylinder block F04B1/2007Arrangements for pressing the cylinder barrel against the valve plate F04B1/2014Component parts F04B1/2021Particularities in the contacting area between cylinder barrel or valve plate F04B1/2028Bearing means F04B1/2035Cylinder barrel F04B1/2042Valve means F04B1/205Cylindrical valve means F04B1/2057Conical valve means F04B1/2064Pumphousing F04B1/2071Cylinder barrel bearing means F04B1/2078Swash plate F04B1/2085Swash plate bearing means or driving axis bearing means F04B1/2092Connection between rotating cylinder barrel and rotating inclined swash plate F04B1/22having two or more sets of cylinders or pistons F04B1/24inclined to main shaft axis F04B1/26Control F04B1/28for machines or pumps with stationary cylinders F04B1/29by varying the relative positions of a swash plate and a cylinder block F04B1/295by changing the inclination of the swash plate F04B1/30for machines or pumps with rotary cylinder block F04B1/303by turning the valve plate F04B1/306by turning the swash plate (with fixed inclination) F04B1/32by varying the relative positions of a swash plate and a cylinder block F04B1/322by moving the swash plate in a direction perpendicular to the axis of rotation of the cylinder barrel F04B1/324by changing the inclination of the swash plate F04B1/326using wedges F04B1/328by changing the inclination of the axis of the cylinder barrel relative to the swash plate F04B1/34Control not provided for in a single group of groups F04B1/02 - F04B1/32