Abstract: The invention relates to an ice cream machine having a filling zone and an emptying zone. The ice cream machine comprises a rotatable unit having a radial extension, a mould for receiving ice cream, the mould being arranged to rotate with the rotatable unit, an extrusion nozzle for extruding ice cream into the mould, the extrusion nozzle being arranged at the filling zone. The ice cream machine further comprises an ejection mechanism for ejecting ice cream radially out of the mould at the emptying zone. The invention also relates to a method for producing an ice cream product using an ice cream machine.

Abstract: An axial piston fluid engine having single-acting cylinders incorporating swivel-joint attachment of the cylinders to rotary control valves wherein straight-line piston movement is established for the elimination of side forces on the pistons. The pistons and the control valves are operatively connected to a common wobble drive member and arranged in geometry of lever positions to coactively time the drive fluid into and out of the cylinders intermittently.

Abstract: In a swash plate type compressor, a rotational shaft makes a piston reciprocate through a swash plate. A suction valve plate is connected to an eccentric portion of the shaft and caused to orbit around an axis of the shaft by rotation of the shaft. Friction between the suction valve plate and a contacting end wall in which a suction port is formed naturally suppresses the rotational motion of the valve plate. Therefore, the valve plate substantially orbits about the shaft axis without rotating and opens and closes the suction port. A relative velocity between the valve plate and the end wall when the valve plate orbits without rotating is smaller than when the valve plate only rotates.

Abstract: It is intended to provide a swash plate type continuously variable transmission capable of automatically affording a lock-up state in which second distributing valves are stopped at their stroke mid-point to cut off motor ports when a motor swash plate stands upright, even without using any special interlocking mechanism. Second distributing valves for bringing motor ports of motor cylinder bores into communication with a high-pressure oil path and a low-pressure oil path selectively in an alternate manner are arranged in parallel with the axis X of a cylinder block; a valve swash plate for reciprocating the second distributing valves is integrally combined with a motor swash plate on the same slant plane; and the motor ports are formed so as to be controlled selectively by the second distributing valves at respective positions 90.degree.

Abstract: A spool valve is provided with a stem portion that defines a fluid passageway formed by either (a) a single central support having a non-cylindrical curved surface shaped hydrodynamically, or (b) only a pair of sidewalls with, preferably, interior surfaces that are also shaped hydrodynamically. These stem passageways, which are designed to facilitate the flow of high-speed/high-pressure fluids controlled by the valve, are maintained in a predetermined orientation relative to the ports of the valve cylinders by a mechanism preferably including (a) a cam-following roller supported in a tang fixed to each spool and (b) a two-element cam that captures the roller within two of the parallel sides of a cam-track groove formed on the respective interior surfaces of each cam element.

Abstract: A productive, efficient and environmentally friendly Steam Powered Head Device for integral use with an engine which operates at high RPM. The inventive device includes a head block with integral cylindrical rotating valve through a longitudinal cylindrical aperture in the head block. A high temperature seal bearing is circumferentially pressed fit around the cylindrical rotating valve at each end of the aperture within said head block. The head block and cylindrical rotating valve include intake steam ports and larger exhaust steam ports to allow rapid discharge of steam which are aligned and sequentially arranged through the axis of the cam shaft according to the degrees recommended by the manufacturer of the high RPM engine to which the inventive device is adapted. One intake steam port and one exhaust steam port is typically aligned to each cylinder chamber of the high RPM engine to which the inventive device is adapted.

Abstract: An axial multi-piston compressor includes a drive shaft, a cylinder block having cylinder bores formed therein and surrounding the drive shaft, and a plurality of pistons slidably received in the respective cylinder bores, wherein the pistons are successively reciprocated in the cylinder bores by a rotation of the drive shaft so that a suction stroke and a discharge stroke are alternately executed in each of the cylinder bores. During the suction stroke, a fluid is introduced into the cylinder bore, and during the compression stroke, the introduced fluid is compressed and discharged from the cylinder bore such that a residual part of the compressed fluid is inevitably left in the cylinder bore when the compression stroke is finished. The compressor further includes a rotary valve for allowing the residual part of the compressed fluid to escape from the cylinder bore into another cylinder bore governed by the compression stroke.

Abstract: An axial multi-piston compressor includes a drive shaft, a cylinder block having cylinder bores formed therein and surrounding the drive shaft, and a plurality of pistons slidably received in the respective cylinder bores, wherein the pistons are successively reciprocated in the cylinder bores by a rotation of the drive shaft so that a suction stroke and a discharge stroke are alternately executed in each of the cylinder bores. During the suction stroke, a fluid is introduced into the cylinder bore, and during the compression stroke, the introduced fluid is compressed and discharged from the cylinder bore such that a residual part of the compressed fluid is inevitably left in the cylinder bore when the compression stroke is finished. The compressor further includes a rotary valve for allowing the residual part of the compressed fluid to escape from the cylinder bore into another cylinder bore after the suction stroke is executed in the former cylinder bore over a given short period of time.

Abstract: A swash plate type compressor is disclosed. A swash plate mounted on a rotary shaft reciprocally drives a double headed piston in cylinder bores. The rotary shaft is supported by valve plates, via a pair of tapered roller bearings. Outer races of the bearings are slidably fitted into sleeves, respectively. A disc spring disposed between protrusions for holding a front housing and the outer race is resiliently deformed for applying a preload to the rotary shaft. Protrusions for holding a rear housing abut against the outer race. Cylinder blocks, valve plates and housings are tightly connected one to another by a plurality of through bolts.

Abstract: A reciprocating-piston-type refrigerant compressor provided with a cylinder block having formed therein a plurality of cylinder bores in which a plurality of pistons are reciprocated to effect suction, compression and discharge of refrigerant gas in response to rotation of a drive shaft, a rotary valve element connected to the drive shaft to be rotated together with the drive shaft within a recessed chamber formed in the cylinder block, the valve element having an outer circumference in sliding contact with the inner wall of the recessed chamber and a suction passageway for sequentially introducing the refrigerant gas before compression into the plurality of cylinder bores during the rotation of the rotary valve element.

Abstract: A reciprocating-piston-type refrigerant compressor provided with a cylinder block having formed therein a plurality of cylinder bores in which a plurality of pistons are reciprocated to effect suction, compression and discharge of refrigerant gas in response to rotation of a drive shaft, a rotary valve element connected to the drive shaft to be rotated together with the drive shaft within a recessed chamber formed in the cylinder block, the valve element having a suction passageway for sequentially introducing the refrigerant gas before compression of the plurality of cylinder bores during the rotation of the rotary valve element, gas receiving grooves formed in the inner wall of the recessed chamber for receiving a part of the compressed refrigerant gas leaking from respective cylinder bores in the phase of the compressing and discharging operations into a contacting area between the inner wall of the recessed chamber and the rotary valve element, and a gas routing passageway formed in the rotary valve eleme

Abstract: An axial multi-piston type compressor includes: a drive shaft; a cylinder block having cylinder bores surrounding the shaft, a central circular space, and respective radial passages for communicating the bores with the space; pistons slidably received in the respective bores, and a housing associated with the block to define a crank chamber. The pistons are successively reciprocated in the bores by a rotation of the shaft so that a suction stroke and a discharge stroke are alternately executed in each bore. A suction rotary valve is rotationally and slidably received in the space to be cooperated with the passages for successively introducing a fluid into the bores subjected to the suction stroke, through the corresponding passages thereof, and for successively closing the passages of the bores subjected to the compression stroke.

Abstract: A hydrostatic continuously variable transmission comprising a hydraulic pump having a pump cylinder, a hydraulic motor having a motor cylinder and a hydraulic closed circuit between the pump and motor, wherein the pump cylinder and motor cylinder are connected integrally rotatably to form a transmission member, one of input and output sections of the transmission being formed on the outer periphery of one of the cylinders and the other of the sections being formed by a transmission shaft which relatively rotatably carries the cylinders. The hydraulic closed circuit includes groups of first and second distributor valves for controlling transfer of working oil between the pump and motor through oil passages and first and second valve driving means for driving these groups of valves are arranged such that one is inside and the other is outside of a cylinder block formed of the pump and motor cylinders. This allows a transmission to have a compact size and a high industrial utility.

Abstract: An axial piston device with a plurality of mechanically actuated, rotory valves having their front faces sealing for the control of flows of fluid is suggested for the connection of ports of its housing to ingoing and outgoing passages of a combustion engine or of other pump arrangements, motoring or transmission arrangements. The device includes working chambers which periodically contract and expand their volumes to take in and expel flows of fluid from the working chambers to and through the valves to the ports and for reversed flow direction. The device is thereby specifically suitable for the communication to external combustion chambers which burn coal powder fuel and which are provided with means to remove, in the external combustion chamber or in a passage, unclean particles from the hot gases before they enter into the expander unit of the device.

Abstract: A single acting steam engine wherein means are provided for auxiliary exhaust through the piston when an auxiliary exhaust poppet valve is open and the auxiliary exchange passages of the piston register with exhaust ports in the cylinder wall. The opening and closing of the auxiliary exhaust poppet valve are responsive to the rate of reciprocation of the pistons. A multiple of said engines may be utilized in combination to provide a multiple cylinder power plant. The engines drive a swash plate, which is formed with recessed, annular thrust surfaces. Projecting at right angles from the recessed, thrust surfaces are exhaust cams that engage valve stems through cam followers for actuating the same. The valve stems actuate the exhaust valves. The throat thickness of the swash plate between the recessed annular thrust surfaces is of uniform dimension along the circumferential paths thereof.

Abstract: A single acting steam engine wherein means are provided for auxiliary exhaust through the piston when the auxiliary exhaust poppet is open and the auxiliary exchange passages of the piston register with the exhaust ports in the cylinder wall. The opening and closing of the auxiliary exhaust poppet are responsive to the rate of reciprocation of the pistons. A multiple of said engines may be utilized in combination to provide a multiple cylinder power plant. The engines drive a swash plate, which is formed with recessed, annular thrust surfaces. Projecting at right angles from the recessed, thrust surfaces are exhaust cams that engage valve stems through cam followers for actuating the same. The valve stems actuate the exhaust valves. The throat thickness of the swash plate between the recessed annular thrust surfaces is of uniform dimension along the circumferential paths thereof.

Abstract: A power generator comprising: body means having three chambers separated from each other by fixed fluid-tight partitions and having a central bore. Shaft means are rotatably mounted in the central bore of the body means with at least one end of the shaft means extending from the body means. At least two drive cylinders are mounted in the central one of the chambers in the body means, each of the drive cylinders include two pistons which are slidably mounted in opposition with each piston having two opposite working faces. The piston rods are attached to the corresponding ones of the pistons traversing a respective of the partitions through stationary fluid-tight joints for allowing the piston rods to move therethrough on a pure translational movement. Two swash plate means are provided. Each of the swash plate means includes a respective lateral one of the chambers.

Abstract: A distributor for hydraulic motors, particularly radial-piston hydraulic motors, wherein an excellent hydraulic seal is provided in the area between the motor housing and the fluid distribution plate by the utilization of a tubular sleeve located in front of the distribution plate. At least two annular steps located on said sleeve which engage with corresponding annular steps on the housing provide such seal.

Abstract: A steam engine with axially aligned cylinders. Disposed within the cylinders are aligned pistons. An inlet valve is provided for each cylinder to control the flow of steam in the associated cylinder for imparting a reciprocating movement to the piston in the associated cylinder. Power conversion means have a swash plate that is disposed between the pistons and that is rotated by the sequential power strokes of the pistons. The inlet valves are actuated by means responsive to the movement of the swash plate to control the flow of steam in the cylinders. The swash plate is formed with recessed, annular thrust surfaces. Projecting at right angles from the recessed, thrust surfaces are ribbon cams, which engage push rods for actuating the same. The push rods actuate the inlet valves. The throat thickness of the swash plate between the recessed, annular thrust surfaces is of a uniform dimension along the circumferential paths thereof.

Abstract: A steam engine with axially aligned cylinders. Disposed within the cylinders are aligned pistons. An inlet valve is provided for each cylinder to control the flow of steam in the associated cylinder for imparting a reciprocating movement to the piston in the associated cylinder. Power conversion means have a swash plate that is disposed between the pistons and that is rotated by the sequential power strokes of the pistons. The inlet valves are actuated by means responsive to the movement of the swash plate to control the flow of steam in the cylinders.

Abstract: Valve control apparatus adapted for use in a rotary engine or pump having a cylinder block rotatable about an axis and including a plurality of cylinders and corresponding pistons radially arranged about the axis, a plurality of valves each disposed in a different one of the cylinders, and a plurality of tappet mechanisms each of which when actuated operates to alternately open and close a different one of the valves. The valve control apparatus includes a cam ring having first and second generally circular cam tracks defined therein for contacting and actuating certain ones of the tappet mechanisms. The cam tracks are disposed in substantially parallel planes and each includes a pair of lobes positioned diametrically opposite in the cam ring. The cam ring is adapted to rotate about the axis in the same direction as the cylinder block but at a speed different therefrom to provide for coaction between the cam tracks and the various tappet mechanisms.

Abstract: A spool valve is provided with a stem portion that defines a fluid passageway formed by either (a) a single central support having a non-cylindrical curved surface shaped hydrodynamically, or (b) only a pair of sidewalls with, preferably, interior surfaces that are also shaped hydrodynamically. These stem passageways, which are designed to facilitate the flow of high-speed/high-pressure fluids controlled by the valve, are maintained in a predetermined orientation relative to the ports of the valve cylinders by a mechanism preferably including (a) a cam-following roller supported in a tang fixed to each spool and (b) a two-element cam that captures the roller within two of the parallel sides of a cam-track groove formed on the respective interior surfaces of each cam element.