Abstract: A driving structure of a three-axis multi-stage Roots pump comprises a pump body, wherein a gear end cover is mounted at one side of the pump body, an air outlet end moving bearing air sealing unit is mounted on the other side of the pump body, and the bearing end cover is mounted on the pump at the side of the pump body; a driving axis, a first driven axis and a second driven axis are further provided inside the pump body, and the driving axis is connected with the first driven axis and the second driven axis through the gear, respectively; and both ends of the driving axis, the first driven axis and the second driven axis are movably connected to an air inlet end gear mechanical seal driving unit and an air outlet end moving bearing air sealing unit, respectively.

Abstract: A pump housing structure of a three-axis multi-stage Roots pump is provided, comprising a first-stage pump housing, a second-stage pump housing and a third-stage pump housing, wherein the first-stage pump housing is provided with a first center axial hole, a first left axial hole and a first right axial hole; a fixed bearing end cover is mounted on the side of the first-stage pump housing, three fixed bearing chambers are provided on the surface of the fixed bearing end cover; the second-stage pump housing is provided with a second center axial hole, a second left axial hole and a second right axial hole, the third-stage pump housing is provided with a third center axial hole, a third left axial hole and a third right axial hole, and the end surface at the outer side of the third-stage pump housing is fixedly mounted with a non-driving end bearing end cover. The present invention can accommodate and fix three axes through three fixed bearing chambers, respectively.

Abstract: A transmission structure of motor connection of roots pump comprises a shaft sleeve, a motor shaft cavity is opened inside the shaft sleeve, and the inner circle of the motor shaft cavity is concentrically meshed with the excircle of the motor shaft; a fixed bolt mounting cavity is opened on the outer surface of the shaft sleeve, a bolt through-hole is opened in the fixed bolt mounting cavity, the shaft sleeve is fixedly connected with the gear seat through a hexagon bolt, and the gear seat and the shaft sleeve rotate synchronously at the same shaft center; a gear is fixedly connected with the gear seat with a bolt, the gear seat is fixed to the pump shaft through a first keyway under the fitting between the first keyway and a first shaft key, and the pump shaft and the motor shaft are coaxially arranged at the center.

Abstract: An embodiment may have two rotary discs including a second disc (a cap) and a first disc; and a rotary ‘cam’ (having ports) placed in the central hole of the first disc. A cap is half the diameter of the first disc. Both face each other and maintain contour complementarity during both of two modes of operation The cap seals the cavity underneath, and without jeopardizing the sealing, permits entry and exit of the radial ridges and furrows of the first disc into it. The ridges sweep the floor (under surface) of the cap and divide the cavity into variable volume compartments that suck and expel fluid simultaneously through the ‘cam’. The machine is designed to work as rotary pump, compressor, turbine or internal combustion engine.

Abstract: Described herein is a device comprising: a chamber wall comprising outer and inner surfaces, wherein the inner surface encloses a lobed chamber with a plurality of lobes and the inner surface comprises segments of arcuate surfaces, each of the segments of arcuate surfaces being tangent with its immediate neighboring segments, and wherein the chamber wall further comprises channels connecting the outer surface and the inner surface of the chamber wall and/or channels through an end surface of the chamber wall; a lobed piston configured to translate along a circular path relative to the chamber wall, the outer surface of the piston and the inner surface of the chamber wall engaged during translation; and holes fluidly connected to the lobed chamber and configured to allow fluid discharge from the lobed chamber through the holes and to prevent fluid flow into the lobed chamber through the holes.

Abstract: The invention relates to a gear wheel pump with two meshing gear wheels which are rotatably mounted within a pump housing by means of a driven driveshaft and a crankshaft journal and which form a pumping channel system between a pump inlet and a pump outlet. Several gaps are formed between the pump housing, the gear wheels, the driveshaft, and the crankshaft journal. One of the gaps between the driveshaft and one of the gear wheels contains means for the rotationally fixed connection of the driveshaft to the gear wheel. In order to prevent leakages penetrating to the connecting means, according to the invention the gap between the driveshaft and the gear wheel is sealed, with respect to the front faces of the gear wheel, by means of a sealant.

Abstract: Described herein is a device comprising: a chamber wall comprising outer and inner surfaces, wherein the inner surface encloses a lobed chamber with a plurality of lobes and the inner surface comprises segments of arcuate surfaces, each of the segments of arcuate surfaces being tangent with its immediate neighboring segments, and wherein the chamber wall further comprises channels connecting the outer surface and the inner surface of the chamber wall and/or channels through an end surface of the chamber wall; a lobed piston configured to translate along a circular path relative to the chamber wall, the outer surface of the piston and the inner surface of the chamber wall engaged during translation and forming a fluid-tight seal between some portions of the outer surface of the piston and the inner surface of the chamber wall such that enclosed spaces are formed between the piston and the chamber wall.

Abstract: A rotary piston engine is provided that combines most of the advantages of an internal combustion engine with those of a turbine engine. The rotary piston engine improves on the existing internal combustion and turbine technology by achieving the same or better high end performance, while improving the efficiency during off-peak operations. The rotary piston engine includes an engine housing, at least one continuous cylinder doughnut, piston pedals, movable wall valves, at least one rotor and at least one point of rotation.

Abstract: A compressor is provided in which a rotary member is suspended on a stationary member and rotates to compress a refrigerant. In the stationary member, top and bottom ends of a stationary shaft are fixed to improve structural stability and assembly properties. Bearing covers are provided on a contact portion of the stationary member and the rotary member, such that the rotary member may rotate when suspended on the stationary member, which stabilizes operation. In the rotary member, a vane is integrally formed with a roller and mounted on a vane mounting hole of a cylinder-type rotor. Although, the rotary member is provided on an outer circumferential surface of the stationary member, suction and discharge operations of the refrigerant are performed in an axial direction, which lowers product height. Oil stored in a hermetic container is supplied to a lubrication passage provided between the stationary member and the rotary member.

Abstract: A gear pump capable of alternately distributing a fluid in two distinct utilization circuits without the need for a switch. The gear pump (1) comprises two fluid outlet ports (5, 6) connected to two fluid utilization circuits and linked to the discharge chamber (C) of the pump via an integrated commutation (7). These commutation (7) comprise two distribution circuits (50, 60), located in a fixed support plate (70), and two buffer channels (30, 40), located in the rotary toothed wheels (3), arranged so as to alternately open and close the distribution circuits according to a commutation cycle that approximately corresponds to the rotation of the toothed wheels over half a revolution.

Abstract: A hydraulic motor 10 receives pressurized fluid from a source 98 controlled by a human operator to convert the energy in the hydraulic fluid to a rotational output to propel a drive wheel 91 of a machine 90. The hydraulic motor 10 includes an end cover 11, a manifold 12, a drive assembly 13, a wear plate 14, a housing 15, and an output assembly 16. The drive assembly 13 includes a rotor 37 with external teeth and a stator 36 with internal teeth formed by rollers 43 having end faces 49 and 50. The pressurized fluid from the source 98 flows through the manifold 12 to the drive assembly 13 and causes rotational and orbital movement of the rotor 37 relative to the stator 36. The rotational movement of the rotor 37 is transmitted to the drive wheel 91 by the output assembly 16.

Abstract: An oil supply groove 12 in communication with a pump room 2A is formed above a bearing 2B of a housing 2, and an open air groove 14 in communication with an atmospheric air is formed at a position rotated around the bearing 2B by 90° from the oil supply groove. In a shank 3B of a rotor 3, a branch passage 11a branching from an oil passage 11 formed in its axial direction to the diametrical direction of the shank, and an open air passage 13 formed in the direction perpendicular to the branch passage are formed. Then, the branch passage and the oil supply groove communicate with each other, at the same time, the open air passage and the open air groove are arranged to also communicate with each other, and when the oil passage and the oil supply groove communicate with each other as the rotor stops, then an atmospheric air flowing in from the open air passage eliminates a negative pressure in the pump room, thereby the lubricating oil is prevented from flowing into the pump room in large quantities.

Abstract: A rotary machine which can be either a pump or an internal combustion engine has a housing enclosing a plurality of rotor spindles lying on the surface of an imaginary cone for driving an output shaft positioned at the vertex of the imaginary cone. The spindles have a beveled gear on one end and engaging an output shaft and a conical bearing on the other end. Angled eccentric rotors are mounted to each spindle shaped to maintain tangential sliding contact with two adjacent rotors to form a compression or combustion chamber. A spherical version of a compressor or an engine uses a plurality of rotary pistons each of which is eccentrically mounted and forms a spherical segment. Each rotary piston is mounted for tangential sliding contact with at least two other rotary pistons to form a displacement chamber therebetween. The rotary pistons use a generally “tear drop” shape. A rotary pump has a housing having a manifold for distributing intake and exhaust air.

Abstract: The problems of prior compressor structures relying upon conventional check valves are obviated by using, instead, flow control passages which operate to control flow while avoiding mechanical moving elements which may become problematical.

Abstract: A motor driven by pressure medium supplied from an external pressure source. The motor comprises a motor casing with a working chamber, a stator pail which forms an axial supply pipe for supply of pressure medium to the working chamber, a rotor part which is rotatably mounted on the stator part and eccentrically arranged in the working chamber, the rotor part and the stator being provided with inlet ports for supply of pressure medium to the working chamber, a hinge part mounted on the rotor part and provided with a pivotably mounted piston which divides the working chamber into a pressure chamber and a discharge chamber, and a constantly open discharge opening which is arranged in the wall of the motor easing from the discharge chamber through which the medium is discharged.

Abstract: A rotary engine configured to use compressed air or high pressure steam to produce power. It has a casing with two peripheral exhaust ports each adjacent to a flattened area, a rotor having three slotted pistons, and a center valve with two opposed inlet ports that provide high pressure steam or compressed air to the pistons. Each rotor revolution produces three power strokes. Furthermore, the volume of air used for a single cycle is reduced, as a result of the air traveling through its pistons. Also, the engine stops when the vehicle it powers is at rest, and a spring inside each piston causes its angled tip to contact the rotary chamber upon start up. In addition, it is inexpensive to manufacture, as there is not much tooling needed to make the rotary engine, and it has only four moving parts, its rotor and the three pistons attached to it.

Abstract: A rotary machine which can be either a pump or an internal combustion engine has a housing enclosing a plurality of rotor spindles lying on the surface of an imaginary cone for driving an output shaft positioned at the vertex of the imaginary cone. The spindles have a beveled gear on one end and engaging an output shaft and a conical bearing on the other end. Angled eccentric rotors are mounted to each spindle shaped to maintain tangential sliding contact with two adjacent rotors to form a compression or combustion chamber. A spherical version of a compressor or an engine uses a plurality of rotary pistons each of which is eccentrically mounted and forms a spherical segment. Each rotary piston is mounted for tangential sliding contact with at least two other rotary pistons to form a displacement chamber therebetween. The rotary pistons use a generally “tear drop” shape. A rotary pump has a housing having a manifold for distributing intake and exhaust air.

Abstract: A rotary machine including: a housing; a plurality of rotor spindles aligned along three orthogonal axes; rotor blades on the rotor spindles and arranged relative to each other so that each rotor blade is in tangential sliding contact with at least two other rotor blades and forming a plurality of working chambers each having a volume which changes as the rotor spindles rotate; a gear system including a plurality of internal bevel gears on the ends of the plurality of rotor spindles and for synchronizing rotation of the rotor spindles during operation; and a central valve mechanism with the rotor spindles extending radially outward therefrom and around which the rotor blades are arranged, wherein the central valve mechanism controls flow of a fluid to at least some of the working chambers formed by the rotary blades.

Abstract: A rotary machine including: a housing; a plurality of rotor spindles aligned along three orthogonal axes; rotor blades on the rotor spindles and arranged relative to each other so that each rotor blade is in tangential sliding contact with at least two other rotor blades and forming a plurality of working chambers each having a volume which changes as the rotor spindles rotate; a gear system including a plurality of internal bevel gears on the ends of the plurality of rotor spindles and for synchronizing rotation of the rotor spindles during operation; and a central valve mechanism with the rotor spindles extending radially outward therefrom and around which the rotor blades are arranged, wherein the central valve mechanism controls flow of a fluid to at least some of the working chambers formed by the rotary blades.

Abstract: A fluid machine includes a stationary scroll member and a movable scroll member. A second tooth portion of the movable scroll member is arranged to be revolved with respect to a first tooth portion of the stationary scroll member and to form an operating chamber between the movable scroll member and the stationary scroll member. The operating chamber is changeable in accordance with a revolution of the movable scroll member to be defined between two sliding contact portions, and is dividable into first and second operating chambers. The second tooth portion is provided with a passage portion through which an introducing port for introducing a fluid to the operating chamber communicates with the second operating chamber when the introducing port communicates with the first operating chamber. The passage portion disconnects the introducing port from the second operating chamber when the introducing port is disconnected from the first operating chamber.

Abstract: A rotary pump for fluids comprising a shaft to rotate about a longitudinal axis and a cylindrical rotor centrally secured to that shaft. A housing encasing the shaft and rotor includes, interior end walls adjacent to the rotor disks and an interior side wall. Fluid inlet and outlet ports are provided at spaced locations in the housing side wall. Paddles are pivotably secured to the rotor in pockets in the rotor, to pivot about points at rearward sides of the paddles, for movement between extended positions with the paddles extending outwardly beyond the cylindrical surface of the rotor and retracted positions where the paddles are seated entirely within their corresponding pockets. A means is provided to bias each paddle towards the extended position, but to allow the paddle to move towards that extended position, but to allow the paddle to move towards the retracted position.

Abstract: A flow passage structure can be disposed in a multi-stage centrifugal refrigerant compressor having a deswirl vane and a return channel bend. The flow passage structure includes a two-way flow passage having a first outlet and a second outlet, for diverging externally injected refrigerant; a first side discharge flow passage connected to the first outlet of the two-way flow passage and having a first side outlet disposed below the deswirl vane, such that the diverged refrigerant can be discharged into the return channel bend and uniformly mixed with the refrigerant in the return channel bend; and a second side discharge flow passage connected to the second outlet of the two-way flow passage and having a second side outlet disposed below the deswirl, vane, such that the diverged refrigerant tan be injected into the return channel bend and uniformly mixed with the refrigerant in the return channel bend.

Abstract: The invention relates to propulsion engineering and particularly to internal-combustion engines. The problem solved by the present invention is improving fuel efficiency and ecological compatibility, as well as providing the ability to set advance ignition at higher rotation, increasing the rotation frequency of the working shaft and decreasing its vibration, thus making the manufacture of such engines more cost effective. This problem is solved by the operational rotor being oval-shaped when viewed in cross-section, whilst the compression rotor being square-shaped when viewed in cross-section.

Abstract: A scroll compressor enabling decrease of a flow path loss in a communication groove extending from a suction port toward a suction chamber to decrease a loss of suction power is disclosed. In the scroll compressor, a movable scroll is provided so as to perform a swivel motion relative to a fixed scroll, a fixed scroll lap and a movable scroll lap are engaged with each other to form a suction chamber and compression chambers, a suction port communicating with the suction chamber is formed in the fixed scroll, and a communication groove extending from the suction port toward the suction chamber is formed in the fixed scroll. The communication groove has a shape such that the bottom thereof is inclined so as to become shallower from the suction port side to the suction chamber side.

Abstract: An orbiting rotary compressor assembly having a compression mechanism disposed in a housing and including relatively moving fixed and orbiting compression members including extending portions having surfaces engaged with each other and between which a compression chamber is located. The orbiting member has a centrally-located hub which moves eccentrically relative to the axis of rotation of a drive shaft in driving engagement with the hub. A vane operatively engages the fixed member extending portion and the orbiting member extending portion, and partially defines the compression chamber. An Oldham coupling is disposed about and is in engagement with the hub, and is in engagement with the fixed compression member, rotation of the orbiting compression member being prevented by the Oldham coupling.

Abstract: A stator (1) has a circular cylindrical internal surface (3) delimiting an operating chamber. A rotor (4) is mounted so as to be rotatable about the axis (8) of the internal surface (3) and has a cylindrical external surface (11), with one generatrix (13) adjacent to the internal surface (3), a diametrically opposite generatrix being spaced from the internal surface. A sealing member (17), projecting through a slot in the stator (1) into the operating chamber and being movable substantially radially, has an axial length substantially equal to that of the rotor (4). The sealing member (17) is connected to the rotor (4) by a linkage which causes the radially inner end of the sealing member to closely follow the external surface (3). A shutter disc (6) at one end of the rotor (4) covers a port (14), in particular an inlet port, in the stator (1).

Abstract: Apertures through each face of a planetary rotor, volutes for low loss delivery and collection of fluid to and from the working volumes of a planetary rotary pump, compressor, or turbine, and zero clearance seals by using continuous carbon fiber reinforced polyetheretherketone (PEEK) or other self-lubricating materials significantly improve the volumetric flow rate of such rotary pumps compressors or turbines. By establishing a means to vent each working volume to an intake or exhaust port at arbitrary rotor positions, apertures linking working volumes to intake or exhaust ports allows each working volume of a multilobe planetary rotary pump to function independently near peak volumetric efficiency.

Abstract: The invention relates to a valve arrangement with a pressure limiting valve and a flow regulator valve, which comprises a flow regulator piston, having at least one first hydraulic resistor, distinguished in that the flow regulator valve's (5) flow regulator piston (15) has a split pressure return surface and in that the first part (ring surface (45)) of the pressure return surface is capable of working at a pressure p1 and a second part (annulus surface (31)) of the pressure return surface is capable of working at a pressure p2.

Abstract: A compound teeth type gas compressor comprises a housing with an upper end cover and a lower end cover mounted on both sides of the housing for constituting a seal cavity, a pair of meshing gears rotatably accommodated in the cavity, each gear having two kinds of teeth which are of different size and have a common pitch circle, an inlet port and an outlet port, an intake chamber and a discharge chamber positioned respectively on the sides of the inlet port and the outlet port in the cavity, characterized in fact that the gears are unidirectionally rotated, one of them is a driving gear having larger teeth, the other is a driven gear having larger gullets engaged with the larger teeth, the larger teeth and the larger gullets are formed with asymmetric shapes, and, as viewed in the rotation directions of the gears, their front flank profile curves are designed to achieve a transmission of a constant angular velocity ratio while their rear flank profile curves are designed to be in conjugate contact with each ot

Abstract: A scroll-type compressor has a front housing, a stationary scroll, and a rear housing arranged in this order. A movable scroll is arranged in a space formed in the front housing and the stationary scroll and opposed to the stationary scroll so that the movable spiral wall engages with the stationary spiral wall. A rotatable shaft is supported by the rear housing and extends through the stationary scroll base plate toward the movable scroll. An orbital rotating mechanism is arranged at the end of the rotatable shaft to cause the movable scroll to orbitally rotate. The orbital rotating mechanism and the rotatable shaft are arranged on the side of the movable spiral wall with respect to the movable scroll base plate.

Abstract: The annular piston of a rolling piston compressor coacts with a groove in valving action such that the groove serves as a supplemental discharge flow area but gas therein is prevented from constituting part of the suction flow. The groove may be in the motor end bearing and/or pump end bearing and permits flow from the compression chamber to the interior of the piston which is in fluid communication with the interior of the shell while the compression chamber is undergoing discharge.

Abstract: A hermetic type scroll compressor includes a hermetically sealed compressor housing formed by first and second cup-shaped casings. A cylindrical housing portion is disposed between the first and second cup-shaped casings and has an annular inner block extending inwardly therefrom. The inner block divides the interior of the compressor into a first chamber in which the drive mechanism is housed and a second chamber in which the compression mechanism is housed. At one end, the drive shaft is supported by the inner block through bearings, and at the its other end, the drive shaft is supported by an annular projection extending from and integral with the second cup-shaped casing. Additionally, the stator is fixedly secured to the second cup-shaped casing. A gas passage, which allows the outer diameter of the compressor to be reduced, extends through the inner block to provide fluid communication between the first and second chambers.

Abstract: A scroll type fluid machinery which is provided with: a first scroll and a second scroll which moves with respect to the first scroll, where the base of the first scroll is provided with suction bores perforating through the base from the rear surface thereof to the front surface, and open at the outer peripheral portion of the front surface of the base, so that fluid released into an internal space of the body casing passes through the suction bores, and into the suction sides of compression volumes formed between spiral members of the scrolls, whereby suction pressure in the compression volumes is maximized and volumetric efficiency is improved.

Abstract: A fluid compressor including a sealed case having an oil bank in which oil is held, a cylinder arranged in the sealed case, a rotation body eccentrically arranged in the cylinder, a main shaft and a sub-shaft formed at each of axial end portions of the rotation body, a spiral groove formed on a periphery thereof such that a pitch of the spiral groove gradually decreases from the sub-shaft side to the main shaft side, a spiral blade engaged with the groove such as to be able to project therefrom or retreat therein, a main bearing and a sub-bearing for eccentrically supporting the cylinder and the rotation body, and a suction hole provided in the rotation body for allowing an operation fluid having a low pressure before compression to flow from the main shaft side to the sub-shaft side so as to introduce the fluid into an inner space of the cylinder, the cylinder and the rotation body rotated relatively with each other so as to transport the operation fluid from the sub-shaft side to the main shaft side for com

Abstract: An improved scroll type compressor having enlarged fixed and orbiting spiral element tips with parallel flat faces is disclosed. A discharge port for discharging compressed fluids is positioned in the fixed end plate. The discharge port is shaped to provide an opening that is effectively elongated adjacent the flat face of the fixed spiral element. In one preferred embodiment, the discharge port has a pair of elongated sides that extend in parallel with the flat face of the fixed spiral element. Another preferred embodiment the discharge port includes a plurality of holes arranged such that a common tangent to the perimeter of the holes is substantially parallel to the flat face of the fixed spiral element. A tapered surface may also be provided in the flat face of the enlarged tip of the orbiting spiral element to improve communication between the compression chamber and the discharge port.

Abstract: A gas compressor comprises a fixed scroll member and a movable scroll member. A plurality of crescent working chambers are defined between the scroll members so that the volume of the working chambers varies when the scroll members are relatively moved. The compressor has a container which seals a power source and the scroll members and forms inner spaces therebetween. An intake port for drawing a gas from the exterior of the container into the working chambers is formed in the outer peripheral region of the fixed scroll member, and an axial port is formed in the inner region of the fixed scroll member so that the working chambers communicates therewith.

Abstract: A mechanical pump having a pumping chamber within which is positioned a pair of intermeshing rotors, preferably of the claw type, with each rotor mounted for rotation on respective shafts and the first rotor being associated with an inlet to the pumping chamber and the second rotor being associated with an outlet from the pumping chamber, wherein the second rotor has a cavity in its surface immediately adjacent the outlet.

Abstract: A compressor arrangement is provided with an eccentrically controlled slidable vane. The vane is movable to release excessive pressure build-up so as to eliminate requirements for a safety valve.

Abstract: A fluid compressor includes a rotating body arranged in a cylinder to extend in the axial direction of the cylinder and eccentric thereto. A spiral groove is formed on the outer circumference of the rotating body, and a spiral blade is slidably fitted in the groove. The pitches of the groove is narrowed at a predetermined rate with a distance from a suction-side end of the cylinder to a discharge-side end of the cylider. The groove has an enlarging section which has a start point, a changeover point, and a terminal point. The enlarging section includes a first portion extending from the start point to the changeover point and having a pitch which changes at a rate smaller than the predetermined rate, and a second portion extending from the changeover point to the terminal point and having a pitch which changes at a rate larger than the predetermined rate. The space between the rotating body and the cylinder is divided by the blade into a plurality of operation chambers.

Abstract: A scroll type supercharger including first and second orbital spiral elements is disclosed. The supercharger includes a first orbiting scroll having a first orbiting end plate from which a first spiral element extends, and a second oribting end plate fixedly attached to said first orbiting end plate, and from which a second spiral element extends. A hollow portion is formed between the first and second orbiting end plates. The housing includes a first casing further including a first fixed scroll having a first fixed spiral element extending therefrom. The housing also includes a second casing from which a second fixed scroll extends. The first and second casings are fixedly attached to form an operating chamber therein. The orbiting scroll is disposed in the operating chamber such that the orbiting scroll is disposed at an angular and radial offset with said fixed scrolls to form at least one pair of sealed off fluid pockets between interfitting pairs of fixed and orbiting spiral elements.

Abstract: A variable-displacement rotary compressor comprises a rotor with a vane and a side plate disposed to abut a side face of the rotor. The side plate has a suction port formed therein to open to both a working chamber abutment face thereof abutting to the rotor side face and a low pressure chamber, and the rotor has a suction path formed therein to open to the working chamber and to an abutment surface of the rotor. The suction path of the rotor communicates with the suction port of the side plate through rotation of the rotor so that a fluid is sucked from the low pressure chamber into the working chamber under suction stroke through the suction path and the suction port.

Abstract: An arrangement for an improved Moineau pump, i.e., a progressing cavity pump with a helical gear pair, wherein the closed end outer gear rotates and orbits relative to a nonrotating hollow inner gear. A hollow inner gear comprising an internal chamber extending axially allows the flow of pumpable material from progressing cavities to the closed end and through the hollow inner gear. The integral and smooth construction of the outer gear and the closed end eliminate contamination sites and further eliminate the need for seals or flexing components which contact the pumpable material. The hollow inner gear can be manufactured to integrally connect to a discharge conduit. The improved pump presented herein can be used within a material containment vessel, and the invention can be positioned to avoid contact of the pumpable material with any rotating couplings. An alternative embodiment presents a closed end outer gear with an internal chamber for use of a pressurized fluid distinct from the pumpable material.

Abstract: A gear pump is disclosed which is adapted to produce a large number of independent output streams, and which includes a housing having a cylindrical opening, a toothed gear disposed coaxially within the cylindrical opening, and at least one pinion gear disposed within the cylindrical opening and mounted in meshing engagement with the toothed gear. A plurality of enclosed fluid chambers are disposed in an equally spaced apart arrangement about the periphery of the toothed gear during orbital rotation of the pinion gear, which in one embodiment includes a tooth cover positioned forwardly of the pinion gear, and in another embodiment comprises the spaces between the teeth of the toothed gear. A fluid inlet is provided for delivering a fluid to the cylindrical opening and to each of the enclosed fluid chambers, and a fluid outlet having a one way valve also communicates with each of the fluid chambers.

Abstract: This is a compressor apparatus having a central cavity, a fluid inlet and a fluid outlet coupled to the cavity, a pair of impellers having hollow interiors positioned in the cavity between the inlet and the outlet, each impeller having a plurality of exernal teeth engaging and intermeshing with the teeth on the other impeller and adapted for compressing a fluid, introduced into the cavity, means for rotating the impellers to draw the fluid out of the interior of the impellers and compress the fluid in the cavity and to force the compressed fluid out of the cavity through the outlet, each impeller having a fluid inlet on one end coupling the inlet of the cavity to the hollow interior of the impeller, each impeller further having a plurality of slots between each of the teeth on the impeller, said slots connecting the hollow interior of the impeller to the cavity through which fluid, introduced into the interior of the impeller, can exit the impeller and pass into the cavity, and a gate positioned in the hollow

Abstract: A gear pump is disclosed which is adapted to produce a large number of independent output streams, and which includes a housing having a cylindrical opening, a toothed gear disposed coaxially within the cylindrical opening, and at least one pinion gear disposed within the cylindrical opening and mounted in meshing engagement with the toothed gear. A plurality of enclosed fluid chambers are disposed in an equally spaced apart arrangement about the periphery of the toothed gear during orbital rotation of the pinion gear, which in one embodiment includes a tooth cover positioned forwardly of the pinion gear, and in another embodiment comprises the spaces between the teeth of the toothed gear. A fluid inlet is provided for delivering a fluid to the cylindrical opening and to each of the enclosed fluid chambers, and a fluid outlet having a one way valve also communicates with each of the fluid chambers.

Abstract: A rotary piston machine, in order to avoid losses due to compressed flows, has adjacent to a generating and/or sealing contact edge (21, 22) at least one recess (11a, 11e) and/or opening (12a, 12b) which extends beyond the contact curve (14a-14c) in at least approximately the direction of motion of the surfaces moving in relation to each other during the stroke or passage of the piston (6a") through the shut-off driver. The spatial dimensions of the recesses and/or opening are such that the flow in it is not substantially accelerated even when the direction is changed. An opening (11g, 11g') can be closed insofar as it is located in a nonmoving ring (6b). To prevent low pressures between surfaces moving away from each other (9c, 14c) a pressure compensation space (11e) is connected to the contact line (14c) of one of the surfaces.

Abstract: A rotary internal combustion engine having separately housed compression and power rotors, and wherein there is a pair of sealing rotors positioned adjacent to diametrically opposite peripheral edges of each rotor to form two sealed pressure chambers in each housing.

Abstract: An internally axed crankless piston engine wherein a piston rotor has at least one piston which moves through a circular annulus defined between a fixed inner casing and a fixed radially outer casing. A stopping piston is provided which defines the terminus of the annulus at one point on its circumference and an inflow duct issues into the annulus via an opening in the fixed inner wall of the inner casing or is arranged in the fixed radially outer casing wall adjacent to the stopping rotor while adjacent to the stopping rotor an outflow duct is provided in a fixed radially outer facing wall of the outer casing.

Abstract: An external combustion engine is disclosed of the type including two or more circular rotors rotatably supported, one of the rotors acting as a power rotor and rotating in tangential contact with the other sealing rotor. The power rotor is formed with a radially projecting piston passing into a mating recess with the sealing rotor at a corresponding circumferential location. Steam or other working fluid is admitted via an intake port located opposite one face of the power rotor to cause rotation of the power rotor by expansion of the fluid in a working chamber defined by the space behind the piston. As the power rotor continues to rotate, the working chamber passes into communication with an exhaust port preparator to another power stroke. A vacuum relief port is provided at an intermediate location which relieves any vacuum condition which develops behind the piston during part throttle operating conditions of the engine.

Abstract: A system for supplying fuel to an atomization fuel oil burner nozzle from a fuel pump at a rate less than that rated for the nozzle for burning of less fuel while achieving good combustion. The fuel is delivered to the nozzle at a pulsing frequency which is dynamically matched to intermittent pressure pulses within the fuel pump to create resonant pressure peaks at the nozzle. The fuel pump creates a pressure pulse each time a tooth of one gear of the pump makes full penetration into the space between a pair of teeth of a coacting rotatable ring gear. Rotatable valving structure, including gear ports in the rotatable ring gear pulses fluid flow to the nozzle by alternately connecting a fluid outlet of the pump to either a pressure port within the pump at the time of a pressure pulse or to the fuel pump inlet with the pressure peak of the pulsed flow being phased together with said pressure pulse.