Abstract: A compression rod engagement apparatus is provided that includes an engagement feature, an engagement feature pin, and a mounting member. The engagement feature is attached to the engagement feature pin. The engagement feature pin is engaged with the mounting member in a home position and axial travel of the engagement feature pin along a lengthwise axis away from the home position in either axial direction is resisted by at least one spring force.

Abstract: An axial impeller has a tubular housing mounted on bearings for rotation. The housing is capable of engaging a motor or generator directly or through a drive belt. Interior turbine blades are mounted on the housing wall. The blades may be hinged so they can rotate between a retracted position adjacent to the wall and an extended radial position. Rods penetrate the wall to position the blades between retracted and extended positions. When extended, the blades may be rotated to propel a fluid through the housing; and when retracted natural fluid flow is less restricted.

Abstract: A ram air turbine comprises a turbine housing which mounts a number of circumferentially spaced turbine blades that function predominantly as impulse turbine blades and a number of splitters, each located in between adjacent turbine blades, which function predominantly as a reaction turbine blade but are shorter in length than the turbine blades. The cross section of the turbine housing decreases between its forward and aft ends while the height of both the turbine blades and splitters increases in the same direction such that the tips of the turbine blades and splitters collectively form a substantially cylindrical shape.

Abstract: A pump (10) comprising a pump casing (20) having front and rear sides (23, 24) with a pumping chamber (38), a chamber inlet (26) and a discharge outlet (27). An impeller (40) within the chamber rotates about an axis. The chamber includes an inner region at or near the axis and an outer region remote from the axis within which is the discharge outlet. The impeller includes a shroud (42) having front and rear faces (43, 44) with a plurality of pumping vanes (46). A collection chamber (60) is provided at the rear side of the pump casing in fluid communication with the pumping chamber. The impeller includes one or more passageways (52) through the shroud, one end opening into the collection chamber and the other opening into the pumping chamber through the impeller front face. A flow inducer (70, 72) is within the collection chamber, which includes a venting outlet (62) and a transfer outlet zone in fluid communication with the outer region of the pumping chamber.

Abstract: An external device for cleaning a filtration material and adapted for application to a filtration device, in which the filtration material can be automatically cleaned easily and at low cost without requiring replacement of an existing filtration device with a newly purchased device. An external device for cleaning a filtration material is applied to a filtration device for filtering a supplied unfiltered liquid by layers of a filtration material to remove muddiness in the liquid and discharging the cleaned liquid to the outside.

Abstract: An air induction system consisting of a cylindrical main flow tube, a helical vane disposed within the main flow tube, and, preferably, a noise absorbing perforated tube disposed within the main flow tube in concentric relation to the helical vane. The twist direction of the helical vane provides air flow rotation in the same direction of rotation as the turbine wheel. The helical vane causes noise reflection and enhancement of noise attenuation by the perorated tube and its adjoining one or more acoustic cavities.

Abstract: Inventive systems (e.g., turbines) for harnessing hydroelectric energy are described. The turbines, includes: (1) a central longitudinal shaft configured to mount and to rotate on a central axis perpendicular to a direction of fluid flow; (2) a plurality of arcing blades coupled with the shaft, the blades extending radially outwardly from the shaft, and the blades including an airfoil cross-section along a substantial length of the blades; and (3) a hydrodynamic cap covering a location where the arcing blades couple with the shaft such that in an operating state of the turbine, presence of the hydrodynamic cap reduces an amount of bypass area, which is area outside a region that is swept by the arcing blades.

Abstract: A centrifugal pump mounted in an external housing. The pump has a split housing containing an impeller with outwardly extending vanes that is mounted on a drive shaft. The drive shaft at one end is mounted to a sealed bearing within the external housing and at the other end to a drive.

Abstract: A combined pump and valve apparatus including a cylindrical casing, a shaft arranged symmetrically in the casing, a device fixedly attached to the shaft and in close fit with the cylindrical casing, thereby defining separated chambers within the casing, a plurality of outlets/inlets arranged along the circumference of the casing, and a plurality of axially arranged inlets/outlets, each of which is fixedly connected to a respective one of the separated chambers. The axially arranged inlets/outlets are alternately in fluid connection with each of the outlets/inlets fixedly arranged along the circumference of the casing in response to rotation of the shaft and the device with respect to the casing. An impeller arrangement pumps a fluid through the combined pump and valve apparatus in response to the rotation of the shaft.

Abstract: Embodiments include apparatus and methods of fluid energy conversion. One embodiment relates to a tube for a fluid energy converter. The tube may include a generally cylindrical and hollow body having an interior surface, an exterior surface, and a longitudinal axis. Another embodiment includes a fluid energy converter having a longitudinal axis and a rotatable tube coaxial about the longitudinal axis. In some embodiments, the rotatable tube converts kinetic energy in a fluid into rotating mechanical energy, or converts rotating mechanical energy into kinetic energy in a fluid.

Abstract: An impeller suitable for use in a centrifugal pump, the pump including a pump chamber and a pump inlet. The impeller includes a main body portion which includes a plurality of primary pumping blades or vanes and one or more flow inducing blades or vanes which project from the main body portion of the impeller and when installed into the pump inlet.

Abstract: A cell for pumping a multiphase effluent includes two rotary parts (4-5), the first one (4) having a hydraulic wheel designed for transmitting kinetic energy to each of the multiphase effluent phases entering cell (1a-1b), and the second one (5), following the first, being an energy converting device designed for homogenizing the phases, transferring kinetic energy between the phases, entraining the lightest phase, converting kinetic energy into pressure and compressing the homogeneous effluent before it leaves the cell. All of the rotary parts of the cell are mounted on a common shaft (3) axially arranged inside a fixed housing (2) having an inlet and an outlet for the multiphase effluent.

Abstract: The invention is a device and method which varies the pressure of a multiphase fluid comprising at least one liquid phase and at least one gaseous phase. The device comprises a housing, a hub, a rotating shaft, and at least two blades defining at least one flow channel. At least one turbulence producing structure is disposed inside at least one flow channel which generates a turbulent zone inside the the at least one channel which mixes the liquid and gaseous phases of the multiphase fluid.

Abstract: Apparatus for the treatment of a multiphase fluid, comprises a pretreatment stage (60) upstream of a treatment stage, the pretreatment stage being arranged to cause an incoming flow of multiphase fluid to concentrate fluids of greater and lesser specific gravity into respective flow paths for subsequent treatment in the treatment stage and the pretreatment stage comprising a cyclonic separator device (60) concentrating fluid or fluids of greater specific gravity into an outer annular flow path around an inner flow path for fluid or fluids of lesser specific gravity. The treatment stage comprises a centrifuge having a separator drum (65) rotatable about the axis (66) thereof with an inlet end portion next to the cyclonic separator device (60) comprising concentric inner and outer walls (76, 70) and helical vanes (75) between the walls.

Abstract: A pumping device is provided having a housing comprised of an inlet housing (70) and a discharge housing (98). The inlet housing (70) contains an impeller device (80) that is comprised of a conical structure (82) rotatable about a rotational axis (86). The conical structure (82) has disposed thereon six vanes (84) that extend outward from the direction of the rotational axis (86). Helical vanes (74), (76) and (78) are disposed on the interior surface of the inlet housing (70). The impeller (80) is operable to rotate and force fluid outward against the interior surface of the housing (70), the vanes (74), (78) directing the fluid along the surface. The discharge section then redirects this to the outlet to prevent cavitation.

Abstract: A dynamic blood pump includes a rotating core member and rotating ring portion effective to pre-spin blood before the blood enteres helical pumping channels of the pump. The blood is pumped and further rotated as it moves axially along the helical channels toward a centrifugal section of the pump. At the centrifugal pumping section circumferential velocity differentials are also controlled to diminish damage to the blood. Outwardly of the centrifugal pumping section, a forced-vortex pumping section communicates the pumped blood to an exit port.

Abstract: A dynamic blood pump includes a rotating core member and rotating ring portion effective to pre-spin blood before the blood enteres helical pumping channels of the pump. The blood is pumped and further rotated as it moves axially along the helical channels toward a centrifugal section of the pump. At the centrifugal pumping section circumferential velocity differentials are also controlled to diminish damage to the blood. Outwardly of the centrifugal pumping section, a forced-vortex pumping section communicates the pumped blood to an exit port.

Abstract: This invention relates to an impelling device having a suction casing having an axially located intake port, and providing a conically shaped suction cavity, and an impeller located within the conically shaped suction cavity having a conically shaped impeller hub and a plurality of vanes extending radially outward from the outer surface of the impeller hub. The impelling apparatus may further include a discharge casing providing a conically shaped discharge cavity in which is mounted a conically shaped discharge hub.

Abstract: A multiple stage drag and dynamic pump is provided for pumping fluid. The pump comprises a housing and a shaft positioned in the housing, the shaft rotating about the longitudinal axis of the housing. A rotor assembly has a plurality of pump stages mounted on the shaft for rotation therewith, each pump stage including a plurality of blades fixed to the shaft. The pump also includes a stator assembly having a plurality of flow directing stator elements, each of the stator elements being positioned between adjacent pump stages. Each of the stator elements has a wall and a diverter, wherein the wall is perpendicular to the axis of the shaft and the diverter is at an angle of less than 90.degree. with respect to the axis of the shaft.

Abstract: With a turbine of the present invention, a preferably spiral partition is formed upright on the outer periphery of a rotor carried rotatably in a casing. A large number of blades are mounted between turns of the partition at a predetermined interval on the outer periphery of the rotor, and a channel for the working fluid is formed in the space between the blades and the partition on the outer periphery of the rotor.Therefore, the turbine of the present invention is a highly efficient turbine capable of efficiently utilizing even a low pressure low speed low flow rate working fluid, while being capable of efficiently converting the kinetic energy of the working fluid into the rotational force of the rotor and realizing a low speed high torque rotation.A turbocharger making use of the turbine is capable of performing sufficient supercharging not only during high speed rotation but during low speed rotation of the engine, while being preferably capable of cleaning emission gases.

Abstract: With a turbine of the present invention, a preferably spiral partition is formed upright on the outer periphery of a rotor carried rotatably in a casing. A large number of blades are mounted between turns of the partition at a predetermined interval on the outer periphery of the rotor, and a channel for the working fluid is formed in the space between the blades and the partition on the outer periphery of the rotor. Therefore, the turbine of the present invention is a highly efficient turbine capable of efficiently utilizing even a low pressure low speed low flow rate working fluid, while being capable of efficiently converting the kinetic energy of the working fluid into the rotational force of the rotor and realizing a low speed high torque rotation. A turbocharger making use of the turbine is capable of performing sufficient supercharging not only during high speed rotation but during low speed rotation of the engine, while being preferably capable of cleaning emission gases.

Abstract: A rotary machine, having non-positive, displacement, which can be used as a pump, compressor, generator or drive turbine wherein the rotor is form by a particular combination of paddles and blades which improves fluid flow through the rotary machine. The paddle and blade configuration of the rotor utilizes the Archimedes screw principal to enhance the fluid flow characteristics and resist cavitation in the rotor chamber.

Abstract: A multistage turbine is provided for driving a downhole motor, which is driven by the flow of a fluid therethrough. The turbine comprises a housing and a shaft positioned in the housing, the shaft rotating about the longitudinal axis thereof. A plurality of turbine stages are mounted on the shaft for rotation therewith, each turbine stage including a rim coaxial with the shaft and a plurality of turbine blades fixed to the rim. A plurality of flow directing stators are positioned between adjacent turbine stages, each of the stators having a wall portion and diverter portion, wherein the wall portions are perpendicular to the axis of the shaft and the diverter portions are at an angle of less than 90.degree. with respect to the axis of the shaft.

Abstract: A screw pump for feeding highly viscous material such as mixed concrete and the like. Plural projections engage the helical screw of the screw pumps to facilitating removal of the material such as gravel caught in the screw pump. Further for preventing excessive force from being exerted on the screw because of material caught in the screw pump, a spring is interposed between partitioning plates and hydraulic cylinders or crank mechanisms. Further, to make the position of the holder for the partitioning plate stable, plural rollers are provided above the holders.

Abstract: A novel turbine is described which consists of a disc or a shaft, to the upper and lower sides of which blades are attached, the blades on the upper side being at least three times larger than those on the underside. The combination of such a turbine with a guide tube provides a strong suction effect, which is suitable, for example, for drawing gases or gas/vapor mixtures into liquid media. Also, methods of directly heating a liquid by hot gases while avoiding the discharge of pollutants into the environment which comprises introducing the hot gases into the liquid with turbulence and with a suction effect such as, for example, by rotating the turbine in the liquid.

Abstract: A pump, particularly, for pasteous masses, includes a rotatable outer wheel provided with a plurality of inner teeth, a pinion rotatable inside the outer wheel eccentrically thereto and having a plurality of outer teeth, the outer wheel and the pinion forming an intermediate space therebetween, a pressure seqment located in the intermediate space between the outer wheel and the pinion, an inlet and an outlet which are offset relative one another in direction of rotation, and a filling device connected with the inlet, the filling device including a filling container and a feeding element arranged in the filling container and having a feeding direction so as to feed a mass toward the inlet.

Abstract: This invention relates to a screw pump for feeding mixed concrete and the like, sticky material such as adhesive fluid without bitting and clogging and feeding them continuously and effectively. For preventing the bitting, a bearing is provided at the inlet of outer cylinder of the pump and inner sleeve of the bearing is fixed to the edge of screw. For preventing the clogging, a multiple of partition plates is inserted between the blade of the screw which can slide along the shaft of the screw.

Abstract: A compressed air rotary motor includes high and low pressure rotors having peripheral helicoidal threads. The rotors are sandwiched between a circular plate and end wall while an intermediate wall separates the two rotors. Fluid passageways in the plate and two walls control the flow of compressed air initially to a single gap between two threads of the high pressure rotor and thence to at least two gaps between a plurality of adjacent threads of the low pressure rotor following which air is delivered to an annular channel in the end wall prior to exiting the motor.

Abstract: A horizontal shaft oil pump is provided for use in a compressor comprising an outer housing having an inlet, an outlet, an oil sump, and a crankcase mounted therein. The crankcase has a generally vertically disposed passageway therein in communication with the oil sump, and a crankshaft is horizontally rotatably received in a bore in the crankcase. A reduced diameter portion of the crankshaft forms between the crankshaft and crankcase an annular chamber in communication with the passageway, and a pair of oppositely angularly disposed helical grooves are disposed in the crankshaft on opposite sides of and in communication with the annular chamber. Upon rotation of the crankshaft, a low pressure area is developed in the annular chamber causing lubricant to be drawn upwardly through the crankcase passageway and into the annular chamber. The rotating helical grooves deliver lubricant from the annular chamber to opposite end portions of the crankshaft for lubricating bearings and other moving parts.

Abstract: An annular nonreturn valve is provided in a pump with a screw conveyor mounted at each end. This nonreturn valve seals the outlet end of the pump. It also makes it possible for the conveyed material to be discharged without deflection in the slug area. The pivotability of the sealing element is made possible by the fact that the screw conveyor shaft has a smaller diameter in the direction of conveying behind the annular nonreturn valve. An area with enlarged diameter of the screw conveyor shaft can be provided on a casing so that wear parts can be easily replaced.

Abstract: The pump comprises a housing (1) in which are installed with a radial clearance an axial-flow suction wheel (5) and an axial-flow impeller wheel (6), which wheels are mounted on a common drive shaft (4) one after the other in the direction of flow. The inside diameter of the pump housing (1) in the zone of the suction wheel (5) decreases in the direction of flow. The inside diameter of the pump housing at the entry to the suction wheel (5) is calculated from the formula:D.sub.o =D.sub.1 .multidot.K.sub.1 (C.sub.k .multidot.10.sup.-4 +2.1).sup.2The suction wheel (5) comprises a hub (11) with helical vanes (12) attached thereto. The vane setting angle increases in the direction of flow and at the entry to the suction wheel (5) it is:.beta..sub.o =(10 to 33.DELTA./D.sub.1).degree..+-.1.5,whereD.sub.o --inside diameter of the pump housing 1 at the entry to the suction wheel 5;D.sub.1 --inside diameter of the pump housing 1 at the entry to the impeller wheel 6;K.sub.1 --dimensionless coefficient of 0.17 to 0.13;C.

Abstract: A novel dual or more interconnected pumping mechanisms pump is provided herein. It comprises a first pumping mechanism within a casing. A first pumping mechanism is provided within the casing, the first pumping mechanism having an operating shaft within the casing, the operating shaft being operated by a motor. The first pumping mechanism has pumping structure so constructed and arranged as exclusively to provide a high pressure, low volume aqueous liquid flow, the first pumping mechanism having axial output. A second pumping mechanism is also provided within the casing, and is in direct liquid flow connection with the first pumping mechanism, the second pumping mechanism also having an operating shaft within the casing, the operating shaft being operated by the same motor. The second pumping mechanism has pumping structure so constructed and arranged as exclusively to provide a low pressure, high volume aqueous liquid flow.

Abstract: A roto-dynamic pump having recirculating means for preventing pump cavitation surging at low flow rates and at moderate to low values of net positive suction head.

Abstract: A roto-dynamic pump having recirculating means for preventing pump cavitation surging at low flow rates and at moderate to low values of net positive suction head.

Abstract: This device relates to a pump for diphasic fluids and comprises an impeller having a hub which carries blades of a special design. The intersection of the outer surface of each blade with a cylindrical surface coaxial with the hub is a line whose angle of inclination, relative to a plane perpendicular to the hub axis, has a substantially constant value over about one third of the hub length. Furthermore, the intersection of the inner surface of each blade with said cylindrical surface forms a curve, or profile, which can be divided into four successive portions with different law of variations of the angle of inclination of this profile relative to a plane perpendicular to the hub axis.

Abstract: Apparatus for pumping or conveying fluent material such as grain, sand, concrete, etc. is disclosed. The apparatus comprises a tube having an inlet at one end and an outlet spaced from the inlet and a pair of helical blades of opposite pitch mounted inside the tube for rotation relative to one another. One blade is mounted to a shaft extending axially inside the tube, and the other blade is mounted to the inside of the tube. The blades are interrupted at diametrical locations to enable the blades to move relative to one another as the shaft rotates relative to the tube for conveying fluent material. Preferably, the assembly is mounted with its inlet in a hopper and its tube disposed upright to afford vertical conveyance of the fluent material through substantial distances.

Abstract: The pump of the present invention has a housing which accommodates an axial impeller set on the pump drive shaft. The impeller has a hub which carries a number of the helical impeller blades held in position thereto and defining a plurality of blade channels for the liquid being handled to pass.

Abstract: The centrifugal pump comprises a unique combination of a centrifugal impeller, inducer and jet pump having the capability of handling incoming fluids with a minimum V/L ratio of 1.0. The motive flow for the jet nozzle is provided by high pressure fluid discharge from the centrifugal impeller, and the high velocity jet is used both to create the suction and entrainment of the fluid coming from the suction inlet and to break up the large incoming vapor bubbles.