Abstract: A compact high power turbopump for feeding liquid propellant to a rocket engine comprises: a short, large diameter shaft that is capable of rotating; a single impeller providing a large pressure rise at a large flow rate, the impeller being mounted on the short shaft so as to constitute a single pump stage; a ball bearing for supporting the short shaft in a small section zone thereof situated in front of the impeller; a fluid bearing dimensioned so as to withstand a high speed of rotation N and having a large diameter D, the fluid bearing serving to support the short shaft in a large section zone situated behind the impeller; a turbine cantilevered out on the short shaft behind the fluid bearing; an inducer of the high pressure type disposed upstream from the ball bearing on the suction pipe; and metal casing elements for the pump and for the turbine that are of simplified shape.

Abstract: A small, compact, relatively low cost, long life and very high speed hydraulic turbine drive. Typical power of this turbine is in the range of 5 to 20 horsepower with operating speeds of 50,000 to 200,000 RPM. The turbine blades are produced at low cost as a part of a thermoplastic turbine wheel and the strength needed for very high centrifugal forces is provided by compressing substantially all of the plastic turbine wheel, except for the blades, within a metal sleeve. A preferred embodiment is driven by a hydraulic pump geared mechanically to a motor vehicle engine and drives a compressor for supercharging the engine.

Abstract: A machine, such as a heat pump, and having an all liquid heat exchange fl, operates over a more nearly ideal thermodynamic cycle by adjustment of the proportionality of the volumetric capacities of a compressor and an expander to approximate the proportionality of the densities of the liquid heat exchange fluid at the chosen working pressures. Preferred forms of a unit including both the compressor and the expander on a common shaft employs difference in axial lengths of rotary pumps of the gear or vane type to achieve the adjustment of volumetric capacity. Adjustment of the heat pump system for differing heat sink conditions preferably employs variable compression ratio pumps.

Abstract: An air cycle machine (10) has four wheels mounted on a common shaft (20) for rotation therewith about a longitudinal axis (12), including a second stage turbine rotor (30) mounted to a first end (20a) of the shaft, a fan rotor (40) mounted to a second end (20b) of the shaft, a first stage turbine rotor (50) mounted to a central portion (20c) of the shaft, a compressor rotor (60) mounted to the central portion of the shaft in back to back relation to the first stage turbine rotor, the first and second stage turbine rotors being operative to extract energy from a flow of compressed air for driving the shaft (20), and the fan rotor (40) and the compressor rotor (60), in rotation about the axis, and first and second hydrodynamic gas film foil bearings (70, 80) for supporting the shaft for rotation about the longitudinal axis (12).

Abstract: A mud pump assembly has a housing having a motor-mounting face directly connected to a standard hydraulic drive motor. The pump housing supports and partially encloses a bearing assembly which supports the pump impeller shaft. A face-type impeller shaft seal is located between the bearing assembly and the impeller. The motor case completes enclosure of the impeller shaft bearing assembly. A motor case drain line is coupled to the mud pump housing for continuous pressure lubrication of the bearing assembly. In one embodiment, case drain fluid is returned from the mud pump housing to the hydraulic fluid reservoir for the hydraulic motor.

Abstract: An air cycle machine (10) a plurality of wheels mounted on a common shaft (20) for rotation therewith about a longitudinal axis (12), including a compressor rotor (60) and a turbine rotor (50) mounted to a central portion (20c) of the shaft in back to back relationship, the turbine rotor (50) being operative to extract energy from a flow ofcompressed air for driving the shaft (20), and the compressor rotor (60), in rotation about the axis. The compressor rotor (60) and the compressor outlet flow passing through duct (164) are thermally isolated from the turbine rotor (50) and the turbine inlet flow passing through duct (152), respectively, by an annular disc-like member (14) of a low thermal conductivity, fiber reinforced resin composite disposed about the shaft 20 and extending radially outwardly between the turbine rotor (50) and the compressor rotor (60).

Abstract: A device for dispensing oils, antifreeze and other fluids from drums or other bulk containers has a rotary air motor which powers a gerotor-type pumping element. The pumping element has at least one magnet thereon and an electronics package is provided which counts the number of magnetic pulses which occur during the rotation of the gerotor and converts it over to the quantity of material pumped. A valve controls the flow of air to the air motor which in turn allows an operator to control the dispensing of fluid from the outlet of the pumping element.

Abstract: An air cycle machine (10) having a plurality of wheels mounted on a common shaft (20) for rotation therewith about a longitudinal axis (12), including a compressor rotor (60) and a turbine rotor (50) mounted to a central portion (20c) of the shaft in back to back relationship, the turbine rotor (50) being operative to extract energy from a flow of compressed air for driving the shaft (20), and the compressor rotor (60), in rotation about the axis. An annular disc-like member (14) is disposed coaxially about the shaft (20) and extends radially outwardly between the turbine rotor (50) and the compressor rotor (60). A venting and sealing assembly (210, 220, 230) is operatively disposed between the shaft (20) and the annular member (14) intermediate the turbine rotor (50) and the compressor rotor (60) whereby a limited flow of compressor outlet air and a limited flow of turbine inlet air are vented to a low pressure region other than the turbine air flow circuit.

Abstract: The invention relates to a machine of the rotary screw type for a gaseous medium having a compression section and an expansion section driving the compression section. According to the invention both the compression section and the expansion section are located in one single working space in which two rotors (14, 16) operate. The machine has a low pressure port (32), a high pressure port (30) and intermediate pressure port means (34).

Abstract: A turbopump system for pumping two separate fluids is disclosed having a r of concentric turbine rotors located within a turbine casing, each directly connected to a pump impeller. The centrifugal pumps, which may be located on opposite sides of the turbine casing are separately connected to their respective fluids such that the two fluids may be pumped simultaneously. A propellant fluid is directed through a generally annular space defined between the concentric turbine rotors to rotate them in opposite directions. Turbine blades attached to each of the turbine rotors extend into this annular space in order to drive the turbine rotors. The pitches of the turbine blades are such that the rotors are driven in opposite directions and one of the turbine rotors may be driven at a different speed than the other.

Abstract: In air cycle machines with hydrodynamic bearings, the mass flow rate of coolant (36) passing through a series of bearings (32, 28, 30) is metered before the coolant passes through the final bearing (30). The final bearing operates at an internal pressure equivalent to that present in the region (72) into which coolant exhausts after exiting the final bearing. Since coolant in the final bearing is at the same pressure as air immediately downstream from the bearing, no rotating seal is required at the outlet of the bearing cooling flowpath.

Abstract: A power recovery speed control apparatus for use in a system driven by a substantially constant-speed power source driving a turbine type water pump. The system includes a hydromechanical trimmer device controlled by pump output pressure to modify the turbine pump speed over a relatively small range as a function of pump output pressure. In series between the power source output shaft and the turbine pump drive shaft is a mechanical differential gear assembly having input, output and differential (speed difference) shafts. A fixed displacement hydrostatic transmission unit (pump) extracts a fraction of the source power at the differential shaft and applies it through hydraulic feed lines to a variable displacement hydrostatic transmission unit operated as a hydraulic motor. The hydraulic motor unit has its displacement controlled by a pump output pressure sensor and its output torque is introduced into the power train at the power source output or alternatively, at the turbine pump input shaft.

Abstract: The invention is directed to an energy recovery pump turbine for use in industrial processes where a fluid is pumped at a high pressure to the process and at least a portion of the fluid is discharged from the process at a high pressure. A turbine is positioned to receive the high pressure discharge from the process. The turbine has an impeller positioned on a shaft and the discharged fluid engages the impeller and causes the impeller and shaft to rotate. A pump is position adjacent to the turbine to receive the fluid being pumped to the process. The pump has an impeller mounted on a shaft and the shaft of the pump is operatively connected to the shaft of the turbine. Rotation of the turbine shaft causes the impeller and the shaft of the pump to rotate whereby the pump assists in supplying the fluid under pressure to the process and to recover energy from the high pressure fluid discharged from the process.

Abstract: Time lost in recharging compressed gas storage bottles on board aircraft is minimized with a fast recharge compressor (20) for rapidly providing compressed gas (30) having a housing (24) with a gas inlet (26), a shaft (46) within the housing (24) on which is mounted a turbine (34) and a multi-stage compressor (36). The turbine (34) is designed to run the shaft (46) and thereby the multi-stage compressor (36). Entering gas is divided into two streams and one stream (28) is directed through the turbine (34) while the other stream (30) is directed through the compressor stages (38,40,44). Heat is exchanged between the two streams by heat exchangers (52,54,56,57,60) after the expansion stream (28) has passed through the turbine (34) so as to cool the compression stream (30).

Abstract: A fluid motor and rotary pump are arranged in a cylindrical housing which is releasably secured in a cup-shaped base unit so that the housing can be removed from and inserted into the base via the open top.

Abstract: A turbocharger-gas turbine for an internal combustion engine operable in multiple modes in a manner reducing heat losses. The turbocharger-gas turbine includes a compressor for delivering compressed air to the internal combustion engine. The compressor has a compressor housing defining an air flow path leading from an air inlet to an air outlet at opposite ends thereof. The air outlet of the compressor is in communication with an air inlet of the internal combustion engine to deliver compressed air thereto. The turbocharger-gas turbine also includes a turbine for driving the compressor to compress air for delivery to the internal combustion engine. The turbine has a turbine housing defining a gas flow path leading from a gas inlet to a gas outlet at opposite ends thereof. The gas inlet of the turbine is in communication with the gas outlet of the internal combustion engine for receiving gas therefrom.

Abstract: Apparatus for pumping fluid from a subterranean reservoir. The apparatus has in combination a well casing and a hollow tube disposed concentrically within the well casing. Secured to the end of the hollow tube is a hollow housing which includes a motor and a pump driven by the motor. An entrance conduit extends down the annulus between the tubing and the casing and carries a refrigerant working fluid which drives the motor in order to operate the pump which pumps subterranean fluids from the housing through the hollow tubing up to the surface of the earth. A return conduit extends from the hollow housing through the hollow tubing up to the surface of the earth. After the refrigerant working fluid expands and drives the motor, it is initially cooled. Subsequently, the refrigerant working fluid passes into the top of the hollow housing where it is vaporized within the return conduit as the return conduit is in contact with hot subterranean produced formation fluids.

Abstract: A device for injection of liquid fertilizer into an irrigation pipe includes an axisymmetrical housing (I) adapted for insertion into the pipe line (III). The device comprises an axial turbine impeller (II) rotatably positioned in the housing, the impeller including several vanes (20) surrounded by a shroud (22) and a flat, annular rim (6) outstanding from the shroud and closely surrounded by the housing walls. The rim contains, on one or on both of its flat sides, a side-channel pump of known design which includes a plurality of radial vanes (30) inserted into an annular portion of the flat side and a channel (33) recessed in the adjoining housing wall portion cooperating with the annular vane portion and extending from an inlet end (34) to an outlet end (35), the two ends being separated by a non-recessed wall portion (36).

Abstract: A fluid driven downhole apparatus is disclosed for pumping a fluid, such as crude oil, from a well in which a housing contains a twin rotor screw type positive displacement motor and a twin rotor screw type positive displacement pump and the screw rotors of said pump and motor are mounted on a pair of common parallel shafts.

Abstract: A fluid driven pumping apparatus comprises a housing containing a twin rotor screw type positive displacement motor and a twin rotor screw type positive displacement pump. The screw rotors of said pump and motor are mounted on a pair of common shafts.

Abstract: In a turbocharger of the type in which a turbine and a compressor are disposed in back-to-back relationship and bearings are disposed on the suction side of the compressor, the turbine and the compressor are isolated thermally from each other; the service life of the antifriction bearings is increased; lubrication oil sealability is improved; and machining of a shaft is facilitated.

Abstract: This pumping installation comprises a source (1) of liquid and a turbo-machine comprising a pump (7) having an intake (8) and an outlet (9) and a turbine (5) which is fixed on the same shaft as the pump (7) and which has an intake (6) and an outlet (4). The outlet (4) of the turbine (5) opens into a conduit communicating the source (1) with the pump (7).

Abstract: Process for pumping fluid composed of a liquid phase and of a gaseous phase, which involves conveying liquid under pressure to the inlet of the turbine of a turbo-machine comprising a pump and a turbine, mixing some of the liquid coming from the turbine with the fluid, and sucking the mixture through the inlet of the pump so as to reduce the gas content of the fluid and allow it to be conveyed by the pump.

Abstract: A turbocharger having a variable nozzle vane assembly to be used in association with an engine. A plurality of pivotable vanes are mounted between the turbocharger backplate and unison ring on one side and an annular side wall, independent of the turbine housing on the other. Each vane includes a drive pin which pivots the vane in response to rotational movement of the unison ring.

Abstract: Apparatus responsive to fluid pressures and capable of providing fluid under pressure to provide a unit which may selectively be used as a fluid motor or a fluid driven motor pump unit depending upon fluid directing and control structures and with minimal modifications to achieve the various desired functions. The unit consists of a pair of radially arranged units which units are known in the art as gerotors and which therefore includes a shaft for mounting or driving a first gear rotor of a first size, a rotor ring which is provided for both orbital and rotational movement with respect to the first gear rotor and with respect to a stationary ring gear surrounding the rotor ring. Valving plates including stationary and moving plates are provided to control fluid flow either between chambers formed by the various gear members and rotor ring for parallel flow when the unit is operating as a motor or individual chamber flow when the unit is operated as a motor pump.

Abstract: An oil driven supercharger is disclosed with the turbine operating on oil from the lubricating system of an internal combustion engine or from a separate source of pressure oil. In the disclosed form of the invention, the turbine drives a pair of air compressors one at each end of a shaft to which the turbine rotor is centrally connected. The disclosed turbine is provided with several means for adjusting the flow rate of the oil used to drive the turbine to accommodate for different sizes of air compressors and different engine sizes. Also disclosed are several examples of how the paired air compressors may be connected to the intake manifold of an engine and/or to the exhaust manifold to dilute exhaust gases and assist in the combustion of uncombusted exhaust products.

Abstract: An air-driven ceiling fan uses air from the duct work system of a home such as the central air-conditioning system to harness that air flow and drive a ceiling fan having a plurality of blades which are spaced from the ceiling and upon a common shaft in a horizontal plane. Air flow through the duct work drives a squirrel cage blower which is mounted about a vertical axis so that air flow through the duct work also drives the squirrel cage blower and the ceiling fan.

Abstract: A screw compressor discharges a fluid including a mixture of highly compressed gas and liquid into a separator reservoir, and a hydraulic motor is driven by at least a portion of the fluid. An injection conduit connects the bottom of the reservoir to a liquid injection port through the casing of the compressor. A pump driven by the hydraulic motor is mounted on the injection conduit. The motor-pump assembly is in a common casing. The injection port is in an area of the casing which is substantially subjected to high pressure.

Abstract: A shaft sealing apparatus utilizing a flow of sealing fluid to block leakage of a second fluid; and including a valve element controlling the flow of sealing fluid as a function of shaft rotational speed.

Abstract: A turbocharger compressor housing unit includes an outer housing and a wall insert for engagement with the outer housing. The outer housing has a compressor inlet port, a wall transverse to the inlet port and extending outwardly therefrom and a circumferential chamber attached to the transverse wall spaced from the inlet port. The chamber has an opening substantially in the plane of the transverse wall. The wall insert is formed with a tubular throat having a disc attached at one end of the tubular throat transverse thereto. The disc has an aperture corresponding to an opening defined through the throat. Rivet protrusions are integrally formed and extend from the disc and correspond to apertures in the transverse wall of the compressor housing. The rivet protrusions engage the apertures in the transverse wall to join the insert to the outer housing with the disc in engagement with the transverse wall. The disc partially encloses the opening in the plane of the wall of the circumferential chamber.

Abstract: The invention provides a turbocharger (20), compressor (170) and turbine (172) rotors mounted on a shaft (160) supported by ball bearing assemblies (162, 164) such that the compressor rotor (172) and turbine rotor (170) are overhung to one side of the bearing assemblies with the turbine rotor separated from the bearing assemblies by the compressor rotor. The turbocharger (20) includes a turbine nozzle area (230) having a plurality of nozzle vanes (234) spaced circumferentially about the turbine rotor and in the nozzle area through which exhaust air from the engine is received into the turbine. A control linkage (228) is positioned intermediate of the compressor rotor and turbine rotor and controls the position of the nozzle vanes to vary the flow of exhaust gases to the tubine rotor. A concentrically positioned cylindrical module (60) is supported within the compressor inlet by struts (62) extending from the inlet wall (64) to the module (60) thereby dividing the inlet into more than one inlet passage.

Abstract: A turbo-compressor apparatus in which the turbine section and the compressor section are placed back-to-back. A non-rotating shaft axially supported in the apparatus supports an anti-friction bearing which, in turn, rotationally supports a rotor assembly. A separating member preferably comprised of a material of low thermal conductivity is provided between the turbine section and the compressor section. A fully floating, non-rotating sleeve bearing incorporating both thrust and radial surfaces is allowed to float freely on the shaft. Thus, thrust forces from the spinning rotor are initially absorbed at the large radial bearing surfaces located at approximately the center of the bearing and are thereby transferred to the small areas at either end of the sleeve bearing. The thrust forces are finally transferred from the sleeve bearing to the stationary shaft. The mechanically locked sleeve bearing also serves to retain the rotor on the stationary shaft.

Abstract: A turbine driven pump wherein a multi-stage centrifugal pump unit is coaxial with and mounted on a common shaft with a turbine unit. The two units are connected to each other by a low-pressure section which defines a hydrostatic seal between the interior of the pump unit and the interior of the turbine unit. The inlet and outlet of the turbine unit are connected with each other by a conduit containing a regulating valve, and the inlet of the pump unit is connected with chambers at the outer sides of relief pistons disposed at the high-pressure sides of the two units. The diameters of the relief pistons are proportional to pressures in the high-pressure portions of the respective units. The inlet of the pump unit is coaxial with the outlet of the turbine unit.

Abstract: A retainer for securing the compressor rotor (172) to the compressor-turbine shaft (160) of a turbocharger includes a retaining sleeve (180) having an aperture therethrough for mounting the sleeve onto the shaft adjacent the compressor rotor to prevent movement of the rotor on the shaft in the direction of the sleeve. The sleeve has an inner bore (180a) having a diameter forming an interference fit on the shaft such that the sleeve prevents movement of the compressor rotor on the shaft. In one embodiment, a lug (300) extends from the sleeve (180) and engages the compressor rotor to transmit a rotational force from the shaft to the rotor through the sleeve and lug.

Abstract: A dual turbine turbocharger for an engine comprising a first turbine wheel and a second turbine wheel mounted on a common shaft in a dual scroll turbine housing for receiving exhaust gases. The twin turbines are isolated from each other by a partition separating the dual scrolls of the turbine housing. The scrolls begin as separate inlet ports for connection to isolated exhaust gas discharge systems.

Abstract: A power turbine rotor drive shaft has a flanged end connected to a turbine rotor disc supported by a rotor bearing housing so as to be rotatably supported by a turbine rotor bearing assembly at one end of the shaft and including a second splined end thereon coupled to a shaft extension supported at one portion thereof by a roller bearing shaft assembly and wherein the shaft has a predetermined fundamental bending vibration mode between the rotor bearing assembly and the shaft bearing assembly and wherein an insert sleeve is shrunk-fit within an inside diameter of the shaft to stiffen the shaft so as to increase the fundamental bending vibration mode of the resultant composite shaft without excessively increasing the weight of the composite shaft.

Abstract: A unique and improved turbomachine for increasing the pressure of one fluid stream by an energy exchange with that of another fluid stream, at relatively high efficiency, includes a housing supporting a compressor turbine wheel for rotation on bearings. Low pressure fluid enters the compressor, driven at the same rpm and by the turbine, such that the tangential velocity of the fluid leaving the compressor is increased. A high pressure fluid enters the housing through an ejector nozzle and is expanded and mixed with the fluid leaving the compressor, the mixed fluid flowing through the turbine. Since a greater amount of fluid flows through the turbine than through the compressor, there is a sufficient amount of energy to drive the compressor and to provide an output from the turbine which is at a pressure higher than that of the fluid entering the compressor. Various forms and systems are described.

Abstract: Method of increasing supercharge pressure at low full-load speed of an engine and for simultaneously limiting the supercharge pressure to a given value at high full-load speed of the engine, includes passing a flow of exhaust gas through a bladed rotor of an exhaust-gas turbine inwardly from the outside through respective entrances and exits of the rotor blades which, in the region of the entrances thereof, are disposed in a plane wherein the axis of the turbine is also disposed, so that a difference in a respective circumferential component of the velocity of the exhaust-gas flow between the blade entrance and the blade exit, taken with respect to the circumferential component of the exhaust-gas flow velocity at the blade entrance, is at least as great at low speeds of the engine as at higher speeds thereof.

Abstract: Turbo compressor apparatus in which the compressor and/or turbine rotor is carried on fluid bearings upon a fixed shaft cantilevered from the rotor housing.

Abstract: A turbopump set comprises a pump having an inlet and an outlet and a turbine having an inlet and an outlet. The pump and the turbine rotors are fixed on the same shaft, and their casings are coupled together at their high-pressure end.

Abstract: The invention provides a turbocharger for use with an internal combustion engine and includes a compressor for supplying air to the engine and a turbine for receiving driving exhaust gas from the engine. The turbine has a shaft integrally attached thereto with which the turbine rotates. The compressor is fitted on the turbine shaft for rotation with the turbine. The shaft is rotatively supported by ball bearing assemblies such that the compressor and turbine are overhung to one side of the bearing assemblies with the turbine separated from the bearing assemblies by the compressor. As a result of this arrangement, the bearing assemblies are removed from the turbine and the intense heat to which the turbine is subjected. This makes possible the use of limited lubrication for the bearing assemblies. The use of ball bearings also provides better control over the radial and axial movement of the turbine and compressor and permits reduced blade tip clearances.

Abstract: A heat pump unit comprising a compressor and an expansion machine for respectively compressing and re-expanding a medium which circulates in a heating or cooling circuit. The power used for compressing this medium is at least partly recovered in the expansion machine and is used for driving the compressor. The compressor and the expansion machine are inner axle, intermeshing rotary piston engines which are arranged directly adjacent to one another on a common shaft. The inner side walls of the rotary engines are adjacent to each other and have cavities and thermal insulating means interposed between them and, while being interconnected, are fixedly connected on the one hand to the shaft and on the other hand with outer rotors. The shaft is rotatably journalled in eccentrics of inner rotors, which eccentrics are rigidly connected with a stationary housing.

Abstract: A small gas turbine engine having a small, high speed shaft assembly including a central shaft member, a radial outflow compressor rotor secured to one end of the central shaft member with its inlet end disposed outboard of the shaft assembly, and a radial inflow turbine rotor secured to the other end of the central shaft member with its discharge end disposed outboard of the shaft assembly. The shaft assembly is supported at its ends, outboard of the rotors, by a pair of bearings which are axially secured but allow limited radial movement of the shaft assembly. An annular combustor is disposed between the turbine and compressor rotors in encircling relation to the central shaft member. Fuel is supplied to the combustor chamber from the exhaust end of the turbine through an axial passage in the shaft assembly opening at one end outboard of the exhaust end bearing and communicating at its other end with radial ports in the central shaft member arranged to sling fuel into the combustor chamber.

Abstract: A fluid-operated turbopump, suitable for installation in the bottom hole tubing of an oil well, is structurally adapted as a hydraulically insertable and removable unit. The turbopump has axially spaced rotary driving and driven impellers operable for overbalancing columns of fluid which are separated by the wall of the tubing, the overbalancing operation facilitating upward movement of fluid from an underground production zone to aboveground storage. A tubular drive shaft interconnecting the impellers is utilized to convey fluid axially through the driven impeller.

Abstract: A fluid pump for use in explosive bore holes comprising an elongated outer housing having upper and lower ends and adapted to permit water to enter the interior thereof. A hydraulic motor is secured to and is positioned in the lower end of the outer housing. A pump housing extends upwardly from the hydraulic motor within the outer housing. A drive shaft rotatably extends upwardly from the hydraulic motor within the pump housing and has a rotor means connected thereto for rotation therewith. The rotor rotatably extends through a pump stator means which is positioned in the pump housing. A pair of hydraulic hoses are in communication with a source of hydraulic fluid under pressure and extend downwardly into the outer housing between the outer housing and pump housing. The hoses are fluidly connected to the hydraulic motor.

Abstract: A small gas turbine engine having a small, high speed shaft assembly including a central shaft member, a radial outflow compressor rotor secured to one end of the central shaft member with its inlet end disposed outboard of the shaft assembly, and a radial inflow turbine rotor secured to the other end of the central shaft member with its discharge end disposed outboard of the shaft assembly. The shaft assembly is supported at its ends, outboard of the rotors, by a pair of bearings which are axially secured but allow limited radial movement of the shaft assembly. An annular combustor is disposed between the turbine and compressor rotors in encircling relation to the central shaft member. Fuel is supplied to the combustor chamber from the exhaust end of the turbine through an axial passage in the shaft assembly opening at one end outboard of the exhaust end bearing and communicating at its other end with radial ports in the central shaft member arranged to sling fuel into the combustor chamber.

Abstract: This liquid recirculation system is particularly suitable for flammable solvents since the liquid is pumped by an air powered pump. The system has a solvent tank with a sink mounted on top of it for drainage into the tank. A centrifugal liquid pump is immersed below the liquid level in the tank for pumping liquid to a spout over the sink. A centrifugal air turbine is mounted above the liquid level for driving the pump. The liquid pump and air turbine have identical housings at opposite ends of a tubular housing. A drive shaft mounted in bushings or bearings at the ends of the tubular housing connects impellers in the turbine and pump. Each impeller is a flat disk with a plurality of flat upstanding blades with a substantially larger number of blades on the turbine impeller than on the pump impeller. Air enters the turbine tangentially and is discharged through an outlet on the top of the turbine.

Abstract: A Tesla-type turbine including turbine blade cooling means is disclosed. The turbine blades define a plurality of alternate spaces, with an air-conducting cooling space positioned between each pair of turbine or working spaces. While hot working gas expands between blades in the turbine spaces, cooling air flows in the opposite direction in the adjacent cooling spaces to cool the turbine blades. The disclosed turbine construction provides for axial air inflow and radial air outflow, with axial exhaust of working gas. After being heated by contact with the turbine blades, the cooling air is utilized in the combustion chamber of the turbine.

Abstract: An air-driven ceiling fan uses air from the duct work system of a home such as the central air-conditioning system to harness that air flow and drive a ceiling fan having a plurality of blades which are spaced from the ceiling and upon a common shaft in a horizontal plane. Air flow through the duct work drives a squirrel cage blower which is mounted about a vertical axis so that air flow through the duct work also drives the squirrel cage blower and the ceiling fan.