Abstract: A progressing cavity pump is provided in which the compressive fit between the rotor and stator is gradually reduced with the distance from the suction end of the pump. This gradual decrease in compressive fit allows for increased slippage near the discharge end of the pump, resulting in better distribution of the internal differential pressure along the length of the pump. The differential pressure distribution in turn reduces heat build-up near the discharge end, increasing the life of the elastomeric stator or rotor.

Abstract: A forced compression type pump including a cylindrically shaped pump case, an eccentric rotating body shaft-supported on said pump case at an eccentric position relative to said pump case and a compressing and forcibly sending member movable in a radial direction or said eccentric rotating body and adapted to be brought into press contact with the interior wall of said pump case, characterized in that the interior space is formed at the central part of said eccentric rotating body, a plurality of guide grooves are formed in a radial direction from said interior space to the circumferential surface of said eccentric rotating body, a plurality of circumferentially contacting cylindrical body inserted in said guide grooves and movable freely in a radial direction are formed, said plurality of circumferential contacting cylindrical body are in a planetary relationship relative to said central cylindrical body and the outer circumferential surfaces of said circumferentially contacting bodies are brought into press

Abstract: A fluid compressor has a cylinder (17), a rotary rod (21), and a helical blade (33) that defines work chambers (44) between the cylinder and the rod. The compressor successively compresses and conveys a fluid from a suction end to a discharge end through the work chambers according to the rotation of the rod. The continuous helical blade is formed by pressurizing and injecting synthetic resin material such as tetrafluoroethylene-perfluoroalkylvinylether polymer resin into a mold through two gates (39), so that a weld line (43) of the blade is located in an intermediate region between a suction pressure region and a discharge pressure region of the blade.

Abstract: A stator jacket (12) and a stator lining (22) of elastomeric material together form a tubular pump stator (10) the ends (20) of which are connected to a connecting piece (36) of a casing portion (32, 34) each. The stator jacket (12) has at least one parting area (14) extending throughout its length. This and the region of the stator lining (22) located radially inside thereof as well as the junctions of the connecting pieces (36) with the stator jacket (12) are designed such that the pump stator (10) will burst in at least one parting area (14, 16) when a predetermined positive internal pressure is exceeded. This provides pressure relief before a risk of explosion can develop when explosives are being conveyed.

Abstract: The seal or pattern between two machine parts has on one of the sealing gap-forming, facing surfaces (5) a plastic layer (1) with closely juxtaposed depressions (8) which have the form of partly cut off voids of an expanded plastic structure. They are formed by the removal of a plastic layer (3) expanded on the machine part, the layer thickness being so uniformly reduced that the voids (4) of the bottom void layer (4) adjacent to the base surface (5) of the machine part are open. This avoids the insulating action of the closed voids of an expanded plastic layer and the latter has a very limited weight, which avoids any risk of the layer being detached or separated due to centrifugal forces. Moreover, in simple manner, a honeycomb-like, open surface structure is obtained, so that there is a labyrinth effect in the sealing gap.

Abstract: A composite stator construction for a downhole drilling motor which provides improved sealing and distortion properties. The elastomer which maintains the sealing/pumping action of the motor is applied in a uniform thickness to a rigid metallic form. In the stator, the rigid former has the basic configuration of the stator and is mounted within the casing of the motor. In the rotor, the elastomer can be applied directly to a metallic rotor core. The basic geometry is provided by the metallic former thereby reduces distortion of the lobes under increased torsional forces.

Abstract: A progressive cavity drilling motor is disclosed with a multiplicity of helically formed conduits positioned in a resilient stator. The conduits are placed between an inner wall of a motor casing and a helically formed through hole formed by the stator. The conduits are located in parallel with each of the semi circular lobes thereby reducing the thickness of the elastomer in the lobe area resulting in a reduction of the hysteresis in the elastomer that is caused by cyclic stress reversals of the stator during motor operation. The conduits additionally divert a portion of the drilling fluid through the stator conducting heat therefrom. In addition, one or more of the conduits may be utilized as a communication channel therethrough for measurement while drilling capabilities.

Abstract: A gear pump is described for pumping extremely low volumes of fluid at extremely low rates of flow. The pump includes a housing with a cavity therein and a pair of gears rotatable within said cavity. One of the gears is shafted and the other is shaftless, and the gears are made of resilient material with the diameter of the periphery of the tips of the gear teeth exceeding the diameter of the cavity in which they rotate. The face width of the gears also exceeds the depth of the cavity in which they rotate.

Abstract: An articulated air vane air or hydraulic motor has a rotor core disposed coaxially in a cylindrical housing, with a plurality of articulating vanes that seat in axial sockets or slots in the rotor core. A crescent shaped insert defines a cam surface in the chamber between the housing and the core. Inlet and exhaust ports are formed either in the housing cylinder or in the end plates. Vane wear is significantly reduced and injected lubricant is not required. The vanes can be generally P-shaped in cross section, with stop structure to limit the articulating motion.

Abstract: A stator for an eccentric spiral pump has a metallic casing, and an insert located inside the metallic casing. The insert is formed as a coating of a rubber-elastic material with a uniform layer thickness and has inner surface with a thread-like profile.

Abstract: A helical gear pump having a stator in which the wall thickness of the stator is substantially constant. This reduces heating in dry running conditions and this effect can be improved by providing anti-friction surfaces on both the rotor and stator.

Abstract: A pump assembly comprising a housing having a cavity therein, an inlet leading to the cavity and an outlet leading from the cavity and a wobble plate mounted for nutating movement in the cavity. The wobble plate divides the cavity into first and second pumping chambers, and during its nutating movement, liquid entering the inlet into the pumping chambers is pumped by the wobble plate through the outlet. The pump can be driven by a motor.

Abstract: A pump assembly includes commonly driven coaxially positioned helical rotors, rotatably engageable within corresponding stators. Each combination of rotor and stator defines a pump having a different volumetric flow rate, each pump discharging to a common discharge port, thereby providing an accurately proportioned mixed fluid of two separate fluids. The rotors are integrally molded from a thermoplastic material and include an integral drive shaft suitable for interconnection to an electric motor. The two rotors are simultaneously driven by a common drive shaft and therefore produce a constant mixed ratio irrespective of rotational speed.

Abstract: A sliding-vane compressor of the type including a compressor body housed in a front head and a shell, wherein a cushioning member is disposed on at least one of a contacting surface between the front head and the compressor body and a contact surface between the compressor body and the shell for taking up vibration produced by the compressor body before the vibration is transmitted to the shell. The cushioning member which is disposed between a rear side block of the compressor and the shell may be formed integrally with a seal member.

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 screw (1) rotates inside a bore (2a) of a casing and meshes with teeth (6) of a pinion or gate-rotor (7) comprised of a sealing portion (8) supported by a support portion (9). The sealing portion (8) has a limited angular play with respect to the support portion (9). This allows the sealing portion to undergo brief but abrupt accelerations or decelerations independently of the support portion (9). In order to allow frictionless angular displacement between the two portions liquid is injected between them at a moderate pressure when each tooth is out of engagement with the screw.

Abstract: In a positive displacement machine, a rotor has screw grooves in which pressure chambers are variably limited, at one end, by teeth of a plastic pinion which is the front element of a composite pinion meshing with the grooves. A metal backing pinion supports the plastic pinion. The metal pinion and plastic pinion are rotatable with respect to each other about the axis of rotation of the composite pinion, in conjunction with a deformation of a resilient angular coupling provided between them. This coupling is a metal blade at least partly surrounding the backing pinion shaft between the plastic pinion and the backing pinion, in a groove of the backing pinion. One end of the blade is secured to the plastic pinion, the other end of the blade is secured to the backing pinion. Several embodiments of the blade are disclosed.

Abstract: A centrifugal pump comprises impeller blades which are pivoted at their inner ends to a rotor so that the impeller blades can rotate relatively thereto between two extreme positionss. The extreme positions are defined by stop means in the form of pins. The construction enables the centrifugal pump to be operated efficiently when driven in either direction, the blades being allowed to flex during operation.

Abstract: The stator comprises a rigid tubular casing and an elastic lining which is tightly enclosed by the casing and symmetrical with respect to the longitudinal center axis of the stator. The inner surface of the lining forms a multiple thread and, in cross section, consists of a number of sections near the axis equal to the number of courses of the thread and an equally great number of concave arcs. The lining has a minimum thickness each at the concave arcs and a maximum thickness each near at least two of the transitions between the sections near the axis and the concave arcs.

Abstract: A reversible, self-priming rotary pump has a housing with a stator of elastomeric material which is softer than the elastomeric material of the rotor on a cam on shaft. The inlet and exhaust ports are separated by a lobe received in a recess in the stator. As the shaft is rotated, the rotor orbits within the stator to pump the fluid between the inlet and exhaust ports, the stator being at least partially compressed along the line of contact with the rotor to form an efficient seal therebetween.

Abstract: An external combustion engine including a rotary motor equipped with non-sliding vanes but conformable to the shapes of the envelopes within which they are contained and forced to operate and a combustion member comprising a sleeve in which a piston is free to reciprocate. The two end closures of the sleeve and the piston ends cooperate to form combustion chambers at both ends of the piston strokes. The motor compresses air for admission in the combustion chambers where fuel is burned and is also used for expanding the combusted gas resulting from the fuel combustion. The gas expansion produces more energy than is required to compress the air. The energy difference constitutes the energy yielded by the engine in the form of shaft power. The air admission the combusted gas exhaust from the combustion member, the fuel injection and ignition are all timely controlled by the piston motion.

Abstract: A progressive cavity pump capable of operating at both high and low system pressures. The pump includes a housing with an elastomeric stator disposed therein. A rotor is rotatably and pumpingly disposed in a pumping chamber defined by the stator. A support member is disposed annularly between inner and outer portions of the stator, and the member bears longitudinally against an annular end portion of the stator and a facing annular shoulder in the housing such that deformation of the stator is prevented when high inlet pressures are present.

Abstract: A progressive cavity pump of the type having a stator member and a rotor member disposed within a cavity in the stator member and being rotated while being permitted to orbit about a central axis of the stator in operation, one of the members being formed of resilient material and the other of rigid material. The rotor is of helical formation having a constant circular transverse cross-section and defining a single-start thread of a preselected pitch and direction, and the cavity of the stator is in the form of a two start thread of the same direction as the rotor and twice the pitch, the cavity in transverse cross-section has an outline defined by a pair of spaced semi-circular concave ends and a pair of sides joining the semi-circular ends. The semi-circular ends have a diameter slightly less than the diameter of the cross-section of the rotor for establishing an interference fit between the rigid and resilient members.

Abstract: A screw compressor of the kind incorporating at least one male rotor and one female rotor, with helically extending lands and grooves. The female rotor (1) is injection moulded from a plastics material having a modulus of elasticity of at most 25,000 N/mm.sup.2. The lands (3) of the female rotor have a thickness (a) which is so adapted to the modulus of elasticity of the plastics material as to allow the lands to be deflected resiliently when clashing with the other rotor (2), as a result of dimensional deviations of the order likely to occur during hardening or curing of the plastics material, or at prevailing temperature variations, but not as a result of the pressure exerted by the working fluid. Due to the injection moulding the surface smoothness is fine enough to make subsequent finishing unnecessary and damages caused by lack of machining are avoided because of the resilient deflecting of the lands of the female rotor when clashing with the other rotor.

Abstract: A peristaltic diaphragm pump comprises a drive shaft, two nutating members having inner surfaces and a flexible tubular member wound at least 360.degree. around the axis of rotation defined by the drive shaft such that the nutating members nutate to peristaltically compress the tubular member between the inner surfaces and to provide a continuous linear sealing as the drive shaft is rotated. Each of the inner surfaces is shaped like a truncated cone with the slope in the radial direction linearly changing around its axis and a shaft therethrough is affixed obliquely so as to wobble with respect to the drive shaft.

Abstract: A gear mechanism, of the Moineau type, having an outer gear member with a helical inner surface. The motor also has a helical inner gear member within the outer member. A resilient sleeve is located between the inner and outer gear members, and has helical inner and outer surfaces. The inner gear member has one less helical thread than the inner surface of the resilient sleeve. The outer surface of the resilient sleeve is similar to, but rotationally offset from, the inner surface of the resilient sleeve.

Abstract: A centrifugal positive displacement device is presented. It is believed that this is the first type device which has the advantages of both a centrifugal pump and a positive displacement pump without any substantial disadvantages. The device comprises a casing similar to that of previous centrifugal casings disposed around an impeller smaller than prior art centrifugal impellers and having cavities in the outer surface thereof. On each side of each cavity is coupled a flexible loop. In operation, as it passes the cam, the flexible loop is filled with incoming fluid which is then compressed out as the cam is approached near the discharge port.

Abstract: A fan mechanism with a fan impeller having flexible blades is shown. The fan impeller is used on a rotatable shaft which includes at least one piece of flexible belting and a plurality of elongate members carried about the shaft parallel to the longitudinal axis of the shaft for clamping the flexible belting in the approximate mid-region thereof whereby each piece of belting forms two fan blades. A retaining element located at either end of the plurality of elongate members positions the members equiangularly about the circumference of the shaft. Since one piece of belting is clamped in the mid-region to form two blades, the full strength of the belting is utilized to withstand the centrifugal forces generated during operation of the fan.

Abstract: A pump consisting in a rotor (3) realized like a housing, placed in an outer housing (2), inside the rotor a cylindrical element (6) coaxially connected thereto by means of an elastic band (23) forming lobate chambers (13,14) between the rotor and the cylindrical element (6). Inside the cylindrical element (6) a solid cylindrical element (9) with a head (10) flared in the shape of a hexagon is rotating inserted, said cylindrical element (9) engaging with an hexagonal pin (11) fixed in an eccentric position on the closing part (12) of the pump. Thus an eccentric rotation of the cylindrical element (6) is caused and, consequently, the compression and the expansion of the chambers for the expulsion and the suction of the liquid (FIG. 1).

Abstract: A centrifugal pump impeller with vanes extending radially from an elastomeric hub in the operation of which the unavoidable flexing, i.e. alternately changing angular orientation, of the vanes in the hub does not contribute to any rupture, because the hub is provided with a compartment cooperating with each vane so that the flexing movements occur in that compartment, rather than causing stretching and compression in the hub elastomeric construction material which ultimately produces rupture or other such breakdown.

Abstract: A pump functioning as a vacuum pump or a pressure pump employing the angular position belt valve is disclosed. Said angular position belt valve comprises a plurality of axial holes disposed within a cylindrical pulley, each of which axial holes has one or more openings to the cylindrical surface of said pulley, which is wrapped by a belt over a predetermined wrap angle. When said pulley is rotated, said holes remain closed by the belt as long as those holes are within the wrap angle. When said holes are rotated out of the wrap angle, those holes become open instantly until they are rotated back into the wrap angle.

Abstract: A fluid driving or fluid driven machine includes an outer cylinder housing stationary piston. The piston includes a generally annular flexible band of smaller circumference than the inner circumference of the cylinder, and a rotary body accommodated within the band. The rotary body has three rollers for urging the band against the inner surface of the cylinder at three angularly spaced locations so that the band defines with the cylinder three working chambers. Two separating members mounted on the cylinder are biased into contact with the band.When the rotary body is rotated the band makes nonslip contact with the wall and rotates the working chambers about the axis of the rotary body. Each separating member separates each working chamber as it passes into two discrete enclosures. A port is located on each side of each separating member to allow communication with the two discrete enclosures. The machine can be operated as a compressor when the rotary body is driven or as an engine to drive the rotary body.

Abstract: A rotary pump apparatus with plural abutting pumping segments has a wafer-like housing with an inner elliptical pumping chamber with intake and discharge ports for a fluid flow. A plurality of identical fluid moving cylindrical segments are movably disposed within the pumping chamber in such a manner that each of the segments abuts at least two other segments within the chamber.The segments rotate in a circular rotary fashion urging the fluid flow between the intake and discharge ports.The apparatus is also provided with a rotor plate rotatably mounted on the housing and a central driven shaft fixedly attached to one surface of the rotor plate. The rotor plate has a series of drive pegs disposed on the surface opposite to that where the shaft is attached.

Abstract: A volume pump which comprises a cylindrical pump chamber including therein a plurality of compartments which are radially formed with flexible partitions and side plates adapted to close opposite open sides of the pump chamber, suction and delivery means arranged in relation to the pump chamber and a deflection means disposed at a center of the pump chamber to successively compress each compartment.

Abstract: A membrane pump comprising a housing having an inner cylindrical surface, an annular member in the housing and having an outer surface defining with the inner surface of the housing a working space. A hollow rolling piston is arranged in the interior of said annular membrane. An eccentric drive including an arm fixed at one end to a drive shaft carries at its other end a roller engaging the inner surface of the rolling piston for rotating the latter about its axis while pressing the outer surface thereof against the inner surface of the membrane, whereby the outer surface of the membrane is pressed at a revolving sealing region against the inner surface of the housing.

Abstract: An extrusion pump for slurries and the like of the Moineau type includes an elastomeric stator that is detachably mounted in a radially adjustable housing for radially adjusting the pressure of the stator on the rotor therein.

Abstract: A rotary fluid pump of the type having a housing body and a pair of recessed end heads assembled to opposite ends of the housing. A pair of resilient sealing plates may be disposed between the side of the housing and the recessed end heads to define a rotor chamber having a rotor with slidable vanes mounted thereon. Fluid inlet and outlet ports adapted to communicate with the rotor chamber are formed either in the sealing plates or in the end heads to provide pairs of inlet and outlet ports.

Abstract: A rotary pump having a housing with a cylindrical cavity and end heads at each end to form a pump cavity. A drive shaft journaled by bearings carries a rotor having a number of movable vanes. Seal plates at each end of the pump cavity to divide it into a pair of end chambers defined by the seal plates and the end heads. Fluid inlet and discharge ports are provided in the sealing plates. The ports are formed as protrusions in the end plates towards the end chambers, as recesses therein or extending as openings into the end heads.

Abstract: A rotary fluid pump has a stator housing with a generally cylindrical cavity extending therethrough and a pair of recessed end heads assembled at opposite ends of the housing to form a pump cavity therewith. A drive shaft is journalled in the end heads by bearings and extending eccentrically into the interior of the pump cavity and a rotor is mounted on the drive shaft within the pump cavity. A pair of sealing plates of different thickness are individually disposed between the ends of the stator housing and the end heads to divide the pump cavity into a pair of end chambers defined by the end head recesses and the plates and an intermediate rotor chamber defined by the plates. A plurality of vanes are slidably disposed in an equal plurality of grooves radially formed in the rotor. The drive shaft is constrained to prevent axial displacement by stoppers, washers or a combination thereof mounted on the shaft and contacting bearings that support the shaft. The bearings are fixed to one end head.

Abstract: A pump for pumping high consistency materials such as paper pulp having a consistency of about 8% or more. The pump includes a pair of rotors disposed in a pumping chamber, and a number of blades extending radially from each rotor, each blade mounted for cooperation with a circumferential portion of the other rotor in sequence during rotation of the rotors in operation. The blades are suitably constructed so that during normal pumping of high consistency material they can produce a head of about 10-170 ft., remaining rigid during normal pumping. However, the blades will flex out of engagement with tramp metal or the like when encountered thereby so that no damage to the pump components results during normal operation. A relatively large clearance can be provided between each blade and its cooperating circumferential portion of the opposite rotor. The pump is especially utilizable in pulp treatment systems between vessels adapted to have high density cellulosic pulp therebetween.

Abstract: A pumping or compressing geometry is being disclosed. Several turns of deformable spiral are fitted in a curved housing to form line contacts between turns of the spiral by allowing it to bend. These line contacts separate the inlet and the outlet ports in a pump or form the compressing chamber in a compressor.

Abstract: A stator is disclosed for use with down-hole fluid powered drilling motors of the Moineau type. It includes a housing and a plurality of removable stator sections positioned in end-to-end, abutting relationship in the housing. Each section comprises a cylindrical body of elastomeric material having an obround opening extending longitudinally therethrough. The opening spirals along a helical path with a pitch equal to the length of the section. A method is disclosed for positioning a plurality of the sections in a statorhousing in end-to-end, abutting relationship with the opening properly oriented to form a continuous helical opening through the stator to receive a helically shaped rotor having one half the pitch of the helical opening. Each section includes a cylindrical reinforcing member embedded in the body of elastomeric material. An annular portion of the body has an outside diameter greater than the inside diameter of the housing.

Abstract: A progressing cavity fluid motor for driving a drill bit for deep drilling tools is described. Such a motor is mounted on a drill string and is powered by a fluid such as drilling mud. The pump includes a housing, a stator with female helical threads within the housing and a rotor with male helical threads mounted inside of the stator. The drill bit is connected to the rotor. In the present invention the rotor has a threaded surface which is formed of an elastically deformable sleeve supported by a carrier shaft. The sleeve is mounted on the carrier shaft in such a manner as to prevent rotation between the two so that the sleeve drives the shaft by positive engagement between these two elements. Means are arranged for introducing a pressure inside of the elastically deformable sleeve for expanding the sleeve radially outwardly.

Abstract: A positive displacement pump includes a flexible endless belt 4 disposed around spaced, parallel drive rollers 8, 9 within a housing 2. The belt is non-extensible in the peripheral direction and carries elastically deformable teeth on its outer surface. The spaces between the teeth form conveying chambers 4b whose volumes vary in an expansion-contraction sense as the belt runs around a roller between inlet and outlet openings 11, 13 in the housing.

Abstract: An eccentric worm pump in which a helical worm rotor rolls off in a planetary manner in a multi-thread hollow helix of a stator sleeve. The helix is adapted to its cross-section and its pitch. Closed helical cavities between the rotor and the opposite part of the helix, are formed and moved from an intake end to a delivery end of the stator sleeve. A plurality of interchangeable annular wearing elements are arranged staggered axially in the roll-off track between the rotor and the stator. The wearing elements may be in the form of collars fixed relative to one another and rotatably adjustable axially relative to the rotor. The collars are braced by a reset device attached to the free rotor end between ring shoulders. The collars have an outer surface which rolls off in the hollow helix and has a layer of elastically resilient wearing material. The wearing material is in the form of a wear-proof sliding synthetic substance.

Abstract: A progressing cavity, positive displacement rotary pump for liquid or semiliquid material, having a specially designed flexible coupling shaft for connecting a drive shaft to an orbital rotor. The pump components include a tubular stator with an interior helical surface and a hollow tubular orbital rotor within the stator operably connected to the shaft and having an exterior helical surface. The rotor and stator define therebetween sealed pumping cavities that advance axially as the rotor rotates and orbits within the stator. The rotor has a tapered socket with a polygonal transverse cross-section (e.g., pyramid-shaped) at its outer end. The rotor is coupled to the rotor drive shaft by the flexible coupling shaft that extends through the hollow rotor and that has an enlarged tapered head formed to fit tightly in the socket and be retained therein by a threaded fastener. The opposite end of the coupling shaft is connected to the drive shaft outside of the rotor.

Abstract: A gear-type machine whose housing accommodates two symmetrical idle gears which are in mesh with an internal toothing of an element embracing them inside the housing and with an external toothing of a central gear, whereas the spaces confined between the idle gears and the toothings accommodate webs to form herewith fluid tight chambers for a working fluid which thus imparts rotation of the idle gears. The internal toothing is stationary and carries the webs, while the idle gears are free to roll over the stationary toothing to impart rotation to the central gear which, in turn, may transmit the torque to a machine output member. In another, preferred embodiment, the central gear is stationary while the housing with its internal toothing is rotatable and constitutes the output.The inventive machine enables rotation of the output member through an angle smaller or greater than 360.degree..

Abstract: The specification discloses a rotary machine, providing internal compression or expansion, connectable to a driving or driven shaft and comprising a cylinder rotatable about its axis, a piston within the cylinder rotatable, synchronously with the cylinder, about an axis parallel to but offset from the axis of rotation of the cylinder, cylinder end boundaries contiguous with either the cylinder or the piston, and a series of flexible vanes each of which is insealable rubbing contact with the end boundaries and is sealably connected to the circumferential surfaces of the cylinder and piston, whereby rotation of the cylinder or piston is transmitted by the pull of the vanes to the piston or cylinder, the volume between each adjacent pair of vanes alternately increasing and decreasing during induction and exhaust of the said volume.

Abstract: A rotary fluid pump or compressor having a pair of flexible diaphragm type sealing plates which are clamped on opposite ends of a stator housing by end heads to form a cylindrical pump cavity and to be pressed onto the opposite end faces of a rotor driven within the pump cavity so as to provide sealing between the suction, compression and delivery chambers. Each of the sealing plates comprises a flat flange portion clamped between the end faces of the stator housing and the end head and a substantially cone shaped portion extending radially inwardly from the flat flange portion to be pressed onto the end face of the rotor and substantially coinciding at its apex with the axis of the rotor.

Abstract: A turbine drive system for operating a vehicle, where the drive system includes a common drive shaft powered by a turbine, and is used for propelling the vehicle and also for operating an air compressor. The air compressor supplies air under pressure which is stored in a pressure tank. The pressurized air operates the turbine which has a vane rotor. A return air flow path is provided from the turbine back to the compressor. By use of a vehicle fan, an air intake is provided to the compressor during forward movement of the vehicle. An auxiliary engine can be included for starting the compressor where the auxiliary engine can also be utilized as an auxiliary drive for the compressor. Additionally, a conventional vehicle engine can be included which operates the same drive shaft and which can work in conjunction with the turbine drive system.