Abstract: A hydraulic radial piston pump has intake porting comprising a slot in the face of a slider block communicating with a passage extending axially through the piston.

Abstract: In the case of piston-machines and in particular those having an elastically deformable sealing tube between the piston and the cylinder, which causes a relatively large structural length of the cylinder-piston arrangement and is provided if necessary with a forced feed for the lubricant, a reduction in the space requirement, in particular the structural length of the cylinder-piston arrangement is achieved by a driving member (30) associated with each piston (20) and embracing the associated cylinder (25) externally and extending over at least part of the length of the cylinder, and frictionally connected, e.g., to a rotating driving mechanism (10). The pulsating secondary space (35) formed by the driving member (30) at the outside of the cylinder (25) is connected for the avoidance of shock pressures because of filling with lubricant liquid flowing away, through a balancing channel (40) of large cross-sectional area to a pressure-balancing chamber (110).

Abstract: A supply pump for continuously supplying pressurized fuel to an accumulator-type injector system employs an electrically controlled metering valve for regulating the supply of fuel to the pump chamber. The output pressure of the pressurized fuel from the pump is regulated by means of a relief valve assembly. The inlet metering valve also controls the operation of the relief valve assembly. The relief valve assembly comprises a hydraulically controlled piston which selectively controls the position of a valve member for releasing pressurized fuel from the outlet portion of the pump so that the pressurized fuel in the injection system may be regulated by controlling the fuel supply to the pump chamber and by also releasing pressurized fuel from the pressurized injection system.

Abstract: A fluid displacement rotary machine is disclosed, more specifically a rotating piston compressor enclosed in a casing formed with a vent through which may freely enter the gas or vapor to be compressed. Radial cylinders are part of a rotor rotatably supported by a shaft co-axial with the rotor. The rotor is power-driven. The piston connecting rods rotate about a stud fixed to the casing and eccentric to the rotor. Each cylinder head includes a scoop rotating therewith and adapted to channel the gas or vapor into the cylinder head; and further includes a delivery pipe connected to a bore formed in the rotor supporting shaft which extends externally of one casing end wall. The cylinders and the pistons rotate in respective annular paths and yet the pistons make a reciprocating movement within their cylinders because of the eccentric mounting of the stud relative to the rotor axis.

Abstract: A pump and a centrifugal impeller are arranged so that the pump has a suction line in which the centrifugal impeller is installed effecting a countercurrent opposite to the suction feed flow direction to the pump. The effect is to regulate the pump flow responsive to the speed of the centrifugal impeller so that the pump output flow decreases with rising pump speed.

Abstract: Radial piston pump, particularly for liquids, comprising at least one rad cylinder, at least one radial piston with associated piston head, at least one piston guide shoe, at least one eccentric element, and a device for attachment of the radial piston with the piston guide shoe or shoes. The piston heads contact with their bearing surfaces the bearing surfaces of the associated piston guide shoe or shoes, but the piston heads are not attached with the piston guide shoes at their bearing surfaces. On the side not contacting the piston head the piston guide shoe contacts the eccentric element. The piston head has an outer shoulder, which is grasped by the device for attaching the radial piston with the piston guide shoe or shoes. This device comprises a connecting sleeve associated with each individual radial piston, which embraces with an inner flange the outer shoulder of the associated piston head.

Abstract: A pump system having a main pump and a plurality of subsidiary pumps each of which has a relatively low pressure compartment from which fluid may be pumped to a relatively high pressure compartment. The main pump preferably operates continuously, but each of the subsidiary pumps is inactive until such time as it is elected to be operated, whereupon high pressure fluid from the main pump may be directed to such subsidiary pump. The pump system is particularly adapted for use in conjunction with an automotive engine.

Abstract: A gas refrigerant compressor comprises a shaft having a first portion and an offset portion. A body supports the first portion of the shaft for rotating movement around an axis of rotation and defines a compression chamber. A compression member is adapted for reciprocating movement within the compression chamber. The compression member is connected to the offset portion of the shaft such that rotating the shaft draws gas refrigerant into the compression chamber upon movement of the compression member toward the axis of rotation and exhausts compressed gas refrigerant out of the compression chamber upon movement of the compression member away from the axis of rotation.

Abstract: A radial plunger pump is provided for supplying pressurized working fluid to any of a plurality of systems using a simple construction in which the pump housing is provided with a plurality of outlets and a switching device for switchingly supplying pressurized working fluid to the respective systems without a requirement for a pressurized reservoir for the pump.

Abstract: A rotary hydraulic engine is disclosed having a stationary crankshaft with an eccentric crank portion disposed thereon. A housing is rotatable about the crankshaft. At least two pairs of cylinders are connected to the housing and extend quadrilaterally therefrom. A piston is slidingly disposed within each cylinder, and is connected to an oppositely disposed piston so as to move in tandem when propelled by a fluid under pressure. An external valve mechanism is provided which is connected to the cylinders so as to sequentially actuate the pistons contained therein when supplied with fluid under pressure. A scotch yoke assembly integrates the motion of the pairs of pistons into a balanced array of weight and force vectors rotating around the axis of the eccentric crank portion of the stationary crankshaft. This sequential reciprocation of the pairs of pistons imparts a rotary motion to the housing, the rotary motion in turn causing the housing to act as a flywheel.

Abstract: Disclosed herein is a two-stage fluid pump comprising a base member defining a sump, a first fluid pumping unit including a pumping piston and supply and discharge passages, a second fluid pumping unit including a pumping piston and supply and discharge passages, a plate member fixed on the sump and having mounted thereon the first and second fluid pumping units, the plate member including a conduit communicating with the first unit discharge passage and with the second unit supply passage and a discharge conduit communicating with the second unit discharge passage and terminating in a discharge port in the plate member, a drive engaged with the pistons for effecting reciprocation thereof and including an electric motor mounted on the plate member and including an output shaft, a drive member mounted on the plate member for rotation and having an eccentric portion drivingly connected with the pistons to effect reciprocation thereof in response to rotation of the drive member, and a speed reducing mechanism op

Abstract: A hydrostatic clutch, includes coaxial driving and driven rotative members, so that when in the clutched condition rotative power is transferred from the driving to driven member. The clutch includes a plurality of pistons bearing upon an inclined cam, and move in a reciprocating motion when the cam which is coupled to either the driven or driving shaft, rotates. A second cam also driven by the driven or driving members, is adopted to be disposed with respect to the mobile member which drives it, into two positions offset by 180.degree.. The second cam acting upon a suction valve controlling the intake of hydraulic fluid, via opposing springs. At least one double stage or delivery valve is carried by the same mobile driving or driven member. A fixed casing is connected to the mobile member carrying the delivery valve or valves, through a rotating seal. The fixed casing is connected via a plurality of hydraulic channels to various hydraulic fluid regulation member.

Abstract: A hydraulic pump unit, comprising an electric motor, the stator (5) of wh is disposed in a housing defining an oil reservoir and the rotor of which is mounted on a shaft which drives a hydraulic pump. Each front end of said stator is associated with an end shield for a shaft bearing. A pump element or the pump is secured to at least one end shield. Elongated connecting members which are distributed about said shaft in the circumferential direction support said end shields. The connecting members are designed as rods (17), abut against the outer circumference (7) of said stator (5) and, in the undeformed state, guide said stator in a close sliding fit. At least one tightening strap (19) encompasses said rods (17) and the outer stator circumference (7) for deforming said rods (17) until said stator is fixed in position and for pressing said rods against the stator circumference. A means for preventing rotation can be provided between said stator and said rods or said tightening strap.

Abstract: The piston machine contains three pistons (5) which are arranged in star form around the shaft end (9). The foot part (15) of the respective piston (5) is provided with a shoe (19) carrying a plate (20). This plate (20) lies on a sleeve (13) mounted on an eccentric (11). A return device (14), whose claws (17) lie on the upper face of the plate (20), is also mounted on the eccentric.A piston machine of this kind runs steadily and can be produced inexpensively.

Abstract: The pump contains cylinders (1) which are arranged in the form of a star and which are attached to a molding (12) with valve cartridges (8 and 9) being interposed. This molding (12) consists of two sets of pipes (17 and 18) which are arranged in the form of a star. The suction channels (13) of the pump are formed in one of the sets of pipes (17). The delivery channels (14) are formed in the other of the pipe sets (18). The central ends of the suction channels (13) open into a cavity (15) which is located in the center of the molding (12) and which is provided with a screw sleeve (16) for attaching a suction line. The central ends of the delivery channels (14) are connected to one another in flow terms, and one of the delivery channels (14) is provided with an outflow orifice (23) for the fluid. The use of the molding mentioned makes it substantially simpler to connect the individual parts of the pump to one another and to the lines attached to the pump.

Abstract: A rotary fluid pump is disclosed which uses rotating rollers running along a circular track to successively depress a plurality of lever arms which in turn operate pistons in a like number of pumps to thereby pump a fluid. The rollers are free to rotate on a frame, which frame rotates co-axially within the track. The rollers are carried on sleeves which slide on arms extending from the hub of the frame, such that the rollers are free to move radially outwardly, as well as inwardly, in response to inertial (i.e., centrifugal) forces associated with the rotation of the frame.

Abstract: A diaphragm pump is disclosed which includes flow channels (12;12a) within pressure chambers (9;9a), at least one of the walls defining the flow channels being in the form of a diaphragm wall (16,17; 16a,17a). A driven piston (A;B) displaces a liquid within the pressure chambers (9;9a) to cause cyclical changes in the volume of and pressure subsisting within the flow channels. Compensating pistons (S;T) are disposed generally opposite each of the driven pistons (A;B) and the compensating pistons are connected to a common hydraulic circuit such that the compensating pistons remain in position until the pressure in one of the pressure chambers (9;9a) exceeds a predetermined pressure, whereupon the compensating pistons (S;T) react in a manner tending to prevent further rise in the pressure in that chamber.

Abstract: A hydrostatic radial piston pump has a housing with a suction chamber, an eccentric, a pressure valve member spaced from the eccentric and having a convex support, and a movable structural unit arranged between the eccentric and the pressure valve member and including a cylinder with a supporting face and a sealing edge spring-biased against the support of the pressure valve member, and a piston with a piston shoe spring-biased against the eccentric, wherein the supporting face has a circumferential groove subdividing it into an outer and inner annular face portion, the outer annular face portion has at least one substantially radial groove communicating the annular groove with the suction chamber, and the ratio of the force of a biasing spring and the dimension of the supporting face does not exceed substantially 2.5 kp/cm.sup.2.

Abstract: An ultrahigh pressure water apparatus converts feed water of normal pressure into ultrahigh pressure water by means of an ultrahigh pressure pump and projects the ultrahigh pressure water through a nozzle gun in the form of jets of ultrahigh pressure water. The nozzle gun has an eccentric shaft tube rotatably disposed inside a nozzle cover, a high pressure hose rotatably inserted into the eccentric shaft tube, and nozzles fastened to the leading end of the high pressure hose. Owing to the rotation of the eccentric shaft tube, the jets of ultrahigh pressure water projected through the nozzle are sympathetically rotated.

Abstract: Improved multi-cylinder pumps wherein a plurality of co-planar positioned connecting rods are radially disposed about a crankshaft and wherein a plurality of generally cylindrical spool-like wrist pins are rotatively coupled to the connecting rods. The improvement comprises an assembly wherein the wrist pins have opposed end regions bordering a smaller diameter central region that contains one or more ring receiving grooves and which wrist pins are mountable in overlapping relation to retainer ring containing grooves formed in the connecting rods. Upon mounting retainer rings in the connecting rod grooves and inserting and rotatively locking the wrist pins in the connecting rods, the connecting rods, wrist pins and retainer rings are integrally locked together in radially extending relation.

Abstract: A multiple piston pump with a constant discharge capacity for liquid chromatographs comprises at least three piston-cylinder units (1,2,3), whereof the pistons (7) are driven through a non-linear drive by a motor (23) with a mutual phase displacement of 360.degree./n, when n represents the number of piston-cylinder units. A regulating system varies the speed of the motor (23) during each period or cycle of the piston movement in such a manner as to compensate for the non-linear drive so that the pressure of the liquid conveyed during each period or cycle remains at least approximately constant. The motor (23) can be constructed as a stepping motor, which is supplied with current pulses whereof the frequency determines the speed of the motor.

Abstract: A hydraulic arrangement has a housing which includes a first space of a definite first pressure and a second space with a lower second pressure. A primary pump supplies fluid under the first pressure into the first space to open the entrance ports into cylinders, which contain pistons therein, whereby the pistons are forced partially out of the cylinders and into the mentioned second space. In the second space the pistons are moved inwardly into the cylinders by an eccentric cam ring to supply a flow of fluid of a fourth pressure out of the outlet of the arrangement's housing.In modified embodiments the arrangement is a pressure transmission, which takes in a third pressure to drive a motor in the arrangement which in turn drives the shaft with the eccentric cam and the unit then exits the fourth pressure, which might be a very high pressure of up to more than ten thousand pounds per square inch.

Abstract: An internal crankcase support for a radial compressor of the scotch yoke type, especially adapted for use in automotive air-conditioners and having a cast crankcase which is split along a plane axially passing through the center lines of the radially oriented cylinders. Each half of the crankcase has a plurality of radially extending semi-cylindrical recesses which, when assembled, form the cylinders. A steel outer housing encloses the crankcase and serves to form the intake and outlet chambers. The housing is formed of two halves which are joined together along a fluid-tight interface and additionally strengthened by means of a plurality of tie rods which pass through openings in the crankcase and clamp the housing halves tightly together. Internal radial support for the crankcase within the housing is provided by a radial support ring secured to the rear housing section and which, upon assembling the housing halves, tightly fits over a circular crankcase shoulder on the rear crankcase half.

Abstract: At least two radial piston pumps having a common eccentric rotatable within an eccentric chamber of the pump housing supply pressurized fluid to separate fluid circuits. The eccentric chamber is divided into separate fluid delivery compartments to which fluid is conducted from a common suction port by the pumps through passages that dampen the transfer of pressure fluctuations between the fluid circuits.

Abstract: A fluid pressure zone is established within the piston bore of a top-loading type of radial piston pump, in opposing relation to the intake passage intersecting the bore to take up radial clearance between the piston and a sealing surface portion of the bore between the intake passage and the pressure chamber into which fluid is displaced by the piston.

Abstract: Multi-cylinder in-line and radial pumps having an improved structure for coupling the piston heads to the crankshaft such that the number of parts commonly employed and the size of the resulting pump is greatly reduced when compared to prior art pumps now on the market. Both in-line piston pumps and radial diaphragm pumps are included. The connecting rods comprise plates, each having a bore through the thickness dimension thereof for receiving a cylindrical lobe formed eccentrically on the pump's crankshaft. Formed on one end of each of the connecting rods is a generally cylindrical bore, also extending through the thickness dimension of the connecting rod, the center of this bore being displaced inwardly of the end edge surface of the connecting rod by a distance which is less than the radius of the bore.

Abstract: An improved slipper is disclosed for a fluid pressure pump of the radial piston type for operably connecting a piston to a cam lobe on a crankshaft. The slipper includes an inner arcuate side surface for engagement with the cam lobe on the crankshaft and an opening through the slipper body to permit centrifugal flow of fluid for piston filling. The opposite side of the slipper body includes a recess for retaining a hardened annular seat inert. The spherical head of the piston rides on the inner circumference or edge of the insert, and the sharp edge of the insert provides a wiping action on the piston head as relative motion occurs between the piston and slipper. Further, an open area is provided on both sides of the line of contact between the piston and slipper to prevent contaminants from entering between the contacting surfaces which would spoil the seat.

Abstract: A surge chamber hydraulically connected between the outlet of a radial piston pump and the internal chambers of the piston plungers, cooperates with a second fluid storing surge chamber in the pump housing through connecting passages to dampen vibrations produced by pump flow fluctuations to reduce non-uniform flow and the noise level during pump operation under a wide range of pressures and speeds.

Abstract: A fluid compressor in which the drive shaft is arranged in a casing including a fluid suction chamber and a fluid discharge chamber concentrically formed therein, with an eccentric end thereof projected from an open end of the casing. Secured to the open end of the casing is a cylinder housing formed integrally with cylinders cruciformly intersecting with each other. Placed in the cylinders are pistons which define therein a recess in which the eccentric end of the drive shaft is fitted. A flange-like bearing retainer chamber is secured to the inner peripheral wall of the open end of the casing which has a hub bulged in the cylinder housing. A needle bearing is mounted in the hub with a portion thereof located in the cylinder housing and supports a portion of the drive shaft adjacent the eccentric end thereof.

Abstract: A plural piston pump is provided wherein the pistons are carried in bores in a body or hub on a radial plane surrounding an actuating cam and wherein a common pulsator chamber is provided comprised of axial recesses in the hub intermediate the pistons communicates with an annular channel in the hub. The arrangement provides a compact form of pump consisting essentially of a hub member externally sealed in a cylindrical housing open at its ends. The hub is provided with inlet and outlet ports, thus eliminating the need for housing ports and housing end pieces or closures and a relatively large pressure or pulsator chamber volume is formed for smoothing out pump pulsations.

Abstract: A housing assembly for a scotch yoke radial compressor especially adapted for use in automotive air-conditioners having a cast crankcase which is split along a plane axially passing through the center lines of the radially oriented cylinders. Each half of the crankcase has a plurality of radially extending semi-cylindrical recesses which, when assembled, form the cylinders. A steel outer housing encloses the crankcase and serves to form the intake and outlet chambers. The housing is formed of two halves which are joined together along a fluid-tight interface and additionally strengthened by means of a plurality of tie rods which pass through openings in the crankcase and clamp the housing halves tightly together. The tie rods pass through eyelet rivets disposed within the openings in the crankcase. The rivets are clinched so as to secure the crankcase halves together and seal the interface between the crankcase halves in the area of the tie rod openings.

Abstract: A high pressure radial pump is disclosed for delivering a stream of water or other liquid at high velocity for jet washing or cleaning of various surfaces. The pump includes a plurality of radially extending cylinders (preferably five cylinders) connected together by an inlet manifold for admission of liquid and an outlet manifold for discharge of liquid. Each cylinder has a piston movable therein to draw in and discharge liquid at high pressure. The pistons are each provided with high pressure seals. The pistons are each connected to a centrally located ring connector driven by a rotary eccentric cam.

Abstract: An annular elastic valve element is deformed under fluid pressure to control flow of fluid from a piston chamber to a pressure chamber of a piston pump by separation from the peripheral wall surface of a valve seat at a location through which a passage bore extends. The valve seat overlies the outer end of the piston and its peripheral wall has reduced diameter portions spaced from the bore to accommodate elastic deformation of the valve element.

Abstract: A radial piston pump has a housing bounding a suction chamber therein and provided with a plurality of pressure ports spaced from one another in circumferential direction of this housing, and with at least one suction port. A plurality of valve units spaced from one another in the circumferential direction of this housing are provided, each of which includes a pressure valve element located in a respective one of the pressure ports and a sleeve member mounted in the same pressure port radially outwardly of the pressure valve element so as to form, together with the latter, a pressure chamber inwardly of and communicating with the pressure port. A plurality of circumferentially extending channels are formed in this housing and intersect the respective pressure chambers.

Abstract: A radial piston pump comprises a housing bounding a suction chamber therein and at least one valve piston unit mounted in the housing. The valve piston unit includes a pressure valve defining a pressure chamber, a movable piston having an axial passage operatively communicating the suction chamber with the pressure chamber, and a suction valve located in the axial passage of the piston. The suction valve is operative for opening and closing the axial passage of the piston so as to establish and interrupt the above communication, respectively. The piston performs a suction stroke and a working stroke, and a valve member of the suction valve is open during the suction stroke of the piston. The valve member has such a mass that it is opened by an accelerative force produced during the above suction stroke of the piston. The piston is moved by an eccentric mounted on a rotatable shaft, which eccentric has a circumferential groove operatively communicating the suction chamber with the axial passage of the piston.

Abstract: A scotch yoke radial compressor especially adapted for use in automotive airconditioners having a cast aluminum crankcase which is split along a plane axially passing through the center lines of the radially oriented cylinders. Each of the crankcase halves has a plurality of radially extending semicylindrical recesses which, when assembled, form the cylinders. Cylindrical cylinder liners are preassembled to the pistons and this assembly is then placed in one of the crankcase halves with the liners being received in their respective semicylindrical recesses. The second crankcase half is then secured to the first, again with the semicylindrical recesses overlying the cylinder liners. The distal ends of the liners are sealed by means of annular flanges which are clamped between the crankcase and the valve plate assemblies located at the ends of the cylinders.

Abstract: There is a fluid rotary machine having radial pistons and a shaft with an eccentric cam having a rotational movement relative to the housing. The cam mounts a ring on the exterior thereof and the pistons abut against the exterior surface of the ring with each piston mounted for sliding movement in the interior of the cylinder. The ring is associated with the distribution of the fluid of the machine to the pistons and cylinders. Means are provided to immobilize the ring against rotation relative to the housing and subjugate the ring to an essentially circular translation movement relative to the rotational movement of the eccentric cam on which the ring is mounted, and is characterized by the fact that the means for maintaining the ring in such a position comprises a plurality of elastic members connecting predetermined points of the ring to anchor points unassociated with the ring.

Abstract: The device is comprised of an auxiliary annular element concentrically mounted on each piston end facing the spherical surface of the rotor. Each piston end is provided with an annular shoulder bearing against a matching annular shoulder formed on the inner periphery of the circular aperture through which the auxiliary annular element is mounted on the piston end. The same auxiliary annular element is also provided with oppositely disposed lateral flanges, in a position corresponding to the sides of the rotor, each having a respective recess which is open in the axial direction opposite to the corresponding side of the rotor and extending in the circumferential direction in an arc of a circle concentric with the rotor. Coupling rings disposed at the sides of the rotor, concentrically therewith, engage said recesses to hold the piston end in contact with the spherical surface of the rotor.

Abstract: A radial piston pump has a housing, a shaft mounted for rotation in the housing and including an eccentric provided with a cam track, inlet and outlet ports in the housing, valve means installed in the ports, a plurality of radially reciprocable pistons spaced about the eccentric and each having a radially inner surface in sliding engagement with the cam track, and a layer of synthetic plastic material having a low coefficient of friction on each of the surfaces, so as to reduce friction between the same and the cam track.

Abstract: A low pressure air displacement pump including one or more cylinders or bellows powered by rotary or reciprocating motivation means. This device employs two or more bellows radially disposed and activated by a singular rotary source of power which imparts a cranking motion to connecting rods affixed to the bellows, which, in turn supply individual conduits with equal or varying amounts of displaced air, in accordance with the particular sizes of the individual bellows.

Abstract: A disposable package dispenser comprises a replaceable, collapsible, prefilled package of the product to be dispensed, and includes a product discharge member and attachment structure for releasably attaching the package to a pressurizable dispensing container. The container includes a manually operable expansible chamber to pressurize the interior of the container and thus the collapsible product containing package to collapse the package and effect pressurized discharge of the product when the discharge member is operated.

Abstract: A refrigerant compressor constructed for the addition of one or more pumping cylinders for the change of capacity. Improved mechanical efficiency is attained by means of a motor-driven eccentric cam imparting linear motion through one or more of the compressor pistons to the compression stroke and wherein the work to reciprocate each piston is assisted by dual out-of-phase compression springs. The cam is configured for producing a predetermined dwell-period when each piston reaches its bottom-dead-center position wherein a maximum gas charge will be inducted into the cylinder bore by the ram velocity effect of the inward moving gas stream. In a like manner the cam design provides piston dwell time at its top-dead-center position wherein an increased gas charge will be expelled per cycle resulting in increased volumetric efficiency.

Abstract: The disclosed liquid fuel injection pump is suited for the delivery of measured charges of liquid fuel under high pressure sequentially to the cylinders of an associated engine and includes a free piston type plunger reciprocably mounted in a pump chamber, wherein the charges are pressurized to high pressure, a stop for the pump plunger to limit the maximum volume of the chamber, a hub mounting a plurality of rollers to engage the camming surface of a tappet interposed between the plungers and the rollers to drive the pump plungers in a direction to reduce the volume of the pump chamber, and hydraulic means to power said pump plunger in the opposite direction.

Abstract: A pump for pumping insulating oil for oil-filled electric cables in which a driven piston is within and spaced from a tubular bellows which is surrounded by an enclosure. The bellows forms a chamber with the enclosure which contains the cable oil, and the bellows prevents contact of the mechanical parts of the pump, other than an intake valve and a delivery valve, with the cable oil. Preferably, the space between the piston and the bellows is filled with oil to transmit motion of the piston to the bellows. The delivery valve is urged closed by a spring, and the intake valve has an element made of lightweight materials and is held closed by gravity and the cable oil pressure but opens by reason of cable oil pressure reduction and the static pressure of the cable oil fed to the intake valve. Also, a plurality of such pumps operable by a single drive mechanism and a method for evacuating gas from the pump and pump lines in which the delivery valve is operated by a magnetic field external to the valve.

Abstract: A fluid transducer including a reciprocatory piston member and a drive mechanism for converting reciprocation of the piston member into rotation of a rotary member coupled to the mechanism, or vice versa. The drive mechanism includes a first elliptical member centrally mounted within said transducer and a second elliptical member rotatably mounted in engagement with said first member and arranged for reciprocation with said piston member. As said piston member reciprocates said second member rotates with respect to said first member to transmit motion between said piston and said rotary member coupled to the drive mechanism.

Abstract: A compact but high volume displacement, relatively noiseless and vibration free compressor for refrigeration gas or the like combining a rotary drive input with six cylinders and three reciprocating pistons within a rotor housed in a stator.

Abstract: A swash plate radial piston compressor having a toggle action connection means between the swash plate and pistons wherein each piston makes two reciprocations in its cylinder for each 360.degree. of rotation of the compressor input shaft. Means are provided for varying the angle of the swash plate such that a nutating ring, which encircles the swash plate in journaled fashion around the periphery of the swash plate will vary the length of the stroke of the pistons upon a change in the angular position of the swash plate causing a change of volume displacement of the compressor without changing the head clearance of the radial pistons, thus allowing the compressor to go to zero displacement while the input shaft continues to rotate.

Abstract: A radial three cylinder cam actuated piston pump progressively transfers fluid through each cylinder in sequence from inlet to outlet via two open ports in each cylinder head and inter connecting ducts; during one-third of a cam actuation cycle one resiliently padded piston top is actuated to dwell pressed against its cylinder head to close its ports and provide positive valving and prevention of back flow; a second similar piston is actuated to eject fluid from its cylinder; and a third similar piston is retracted to receive fluid into its cylinder; each of the three pistons is sequentially actuated in these three phases during one cam cycle to constitute a pumping cycle delivering one cylinder of fluid per cam revolution; the symetrical cam system allows reversibility of flow and prevents back flow in either direction when rotation is stopped.

Abstract: Relative motion is provided between a set of primary magnets positioned along a path of relative motion, and a set of secondary magnets positioned along the path of motion to confront the primary magnets. Such motion causes the primary magnets to displace the secondary magnets in directions transverse to the path. Power output means are driven by transverse displacement of the secondary magnets. The polarities of the magnets are such that the forces of magnetic attraction in one direction parallel to the path are substantially equal to the forces of magnetic repulsion in the opposite direction parallel to the path, whereby a minimum of energy is required to produce said relative motion. SUThis invention relates to an energy conversion system wherein primary motion in a given path produces secondary motion in a direction transverse to the given path.

Abstract: A rotary input shaft is provided having an axially shiftable cam mounted thereon including circumferentially spaced and axially tapering cam lobes. A pair of reciprocating piston oil pumps are provided and include piston actuating followers engaged with the cam and operable thereby to pump oil through the pumps. An oil turbine is also provided and oil lines extend to and from the turbine from the pumps whereby operation of the pumps will cause oil to be pumped through the turbine which includes a rotary output shaft. By axially shifting the cam on the rotary input shaft the volume of oil pumped by the pumps during each cycle of operation thereof is varied whereby the input of oil to the turbine is similarly varied. The hydraulic system connecting the pumps to the turbine includes oil reservoir means from which oil may be admitted into the working portion of the system and into which oil from the working portion of the system may be withdrawn.