Abstract: A drill string reaming tool for reaming a wellbore while drilling as part of the bottom hole assembly on a drill string comprises a reaming sleeve having teeth or cutters thereon. In some embodiments, the reaming sleeve rotates around the longitudinal axis of the tool unpowered. In some embodiments, the rotation of the reaming sleeve is powered by a turbine driven by mud flowing through the drill string.

Abstract: A lower portion of a cylindrical portion provided in a vacuum pump on the outlet port side has an extension portion extending to a further downstream side than a stationary part of a thread groove exhaust element. In the extension portion, the smaller the outer diameter, the smaller the stress applied to the inner diameter side during rotation. As such, the configuration including a reduced diameter portion reduces the stress applied to the inner diameter side of the cylindrical portion without lowering the rotation speed of the rotating body. Additionally, providing a gradually decreasing diameter structure in the extension portion reduces stress concentration at the reduced diameter portion.

Abstract: Disclosed is an air-compression energy-storage and power-supply system having air purification capability through using solar energy. The system includes: a solar energy power supply device, it utilizes solar energy to produce power for the system itself, and for users to use in daytime; an air purification device, with its exhaust fan connected to a transformer power distribution device to obtain the power for rotation, so that outside air flows into the air cylinder after filtering by the air filter, then the purified air is exited from the air cylinder to provide purified air; an air-compression energy-storage and power-supply device, used to compress the purified air into high pressure for storage, and the high pressure purified air is released at night, for the generator to produce power for user to use at night; and a wind power transmission device, disposed above the air purification device.

Abstract: A rotary drive apparatus includes a housing having a housing hole defined therein, a cylindrical rotor being disposed in the housing hole, a working fluid passage through which a working fluid for applying a fluid pressure to one end face of the rotor flows, a motion limiting unit configured to limit motion of the rotor toward another end thereof, and an output shaft configured to extract rotary power of the rotor out of the rotary drive apparatus. A predetermined gap for the working fluid to flow therethrough is created between an outer circumferential surface of the rotor and a wall surface defining the housing hole.

Abstract: A universal spherical reaction turbine for any flowing fluid at any depths or elevation that is capable of unidirectional rotation under reversible flow conditions. The turbine includes a rotatable shaft that is adapted to rotate about an axis of rotation; turbine blade support members that are fixedly attached to the rotatable shaft and a plurality of meridian turbine blades. The meridian turbine blades are fixedly attached to diametrically-opposite points that define a geometrical north-south meridian axis that is oriented at a skew angle to the axis of rotation of the rotatable shaft. The skew angle is greater than zero and less than 180 degrees, and, more preferably, between 25 and 35 degrees. The skewing ensures that those turbine blades that are attached to the diametrically-opposite points move on a helical trajectory with respect to the axis of rotation.

Abstract: The invention relates to a method and apparatus for gradually converting marine wave energy into electricity. The energy reserve provided by wind power holds enough energy for the needs of the entire mankind. The invention provides an efficient means of putting this energy reserve to practical use. Mounted on a rotating power shaft is a pair of form parts, the convex and concave shape, especially the round-pointed open V-shape of which reverses its orientation by 180 degrees, i.e. turns from convex to concave, whenever the power shaft makes a rotation of 180 degrees. The circular motion of water occurring in a wave drives such a turbine effectively while the wave dies out. The pair of convex and concave form parts extends helically around the power shaft, whereby water currents in all directions, which come to contact with the pair of form parts, produce a rotative moment.

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 control mechanism for moving at least two components of a gas turbine engine, the control mechanism comprises first and second crankshafts and a torsion bar connected to both crankshafts, each crankshaft is connected to a different component, the crankshafts engage one another via one-way abutment means and the torsion bar is pre-twisted so that up to a predetermined rotational extent the two crankshafts rotate together and beyond that extent only the first crankshaft rotates, thereby one of the two components moves more than the other component.

Abstract: A power generator assembly (10a) for using kinetic energy from a flowing fluid (12) to generate power. The power generator assembly (10a) includes a blade assembly (14) and a generator (30). The blade assembly (14) has a head end (16) for facing oncoming flowing fluid (12), a tail end (18) spaced from the head end (16) for facing in the direction of flow of the fluid (12), and a rotational axis (20) extending between the head end (16) and the tail end (18). The blade assembly (14) includes a blade arrangement (22) which is arranged in generally helical fashion about the rotational axis (20), and at least one mounting formation (24) connected to the blade arrangement (22). Each mounting formation (24) is adapted to permit mounting of the blade assembly (22) for rotation about its rotational axis (20), so that in use fluid (12) flowing past the power generator assembly (10a) interacts with the blade arrangement (22) to rotate the blade assembly (24) about its rotational axis (20).

Abstract: A wind turbine apparatus reactive to fluid flow comprises a turbine assembly (64) rotatably supported for generating energy and a fluid flow control assembly (104, 106, 108, 110, 112) to control fluid flow acting upon the turbine assembly (64). The turbine assembly (64) includes turbine blades (84) that extend from first ends (86) with chords (C) coincident to first end radials (R1) to second ends (88) disposed on second end radials (R2) with the chords (C) coincident to the turbine axis (B). The turbine blades (84) present faces (98) at varying angles of attack between the first end radials (R1) and the turbine axis (B) to always position or present a portion of the turbine blades (84) perpendicularly to fluid flow at various transverse angles to the turbine axis (B).

Abstract: A screw pump for transporting a viscous product is described comprising a cylindrical housing connected to a removable bottom piece in one end and a removable cap in the opposite end, a rotor having one or more screw blades connected to a driving motor, an inlet and an outlet wherein the cylindrical housing is provided with a jacket for supply or removal of heat, and the rotor is provided with one or more internal channels connected to an inlet and an outlet for supply or removal of heat. Such a screw pump is suitable for pumping emulsion susceptible to mechanical or temperature damage. Food emulsions manufactured with reduced or without addition of emulsifiers may be transported using such a pump without mechanical damage to the emulsion.

Abstract: A device for axially conveying fluids, wherein the conveyor part thereof is entirely magnetically borne and the radial bearing thereof is provided with sufficient rigidity and efficiently dampened, whereby problems encountered when passing through critical speeds and the disadvantageous effects of hydrodynamic and mechanical imbalance of the rotor are avoided. The magnetic bearing is combined with a hydrodynamic bearing.

Abstract: A ribbon drive pumping apparatus and method for substantially incompressible fluids, such as liquids, is disclosed. The pump has an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of helical coils is mounted in the tube for rotation and the frequency of the coils decreases from the first end to the second end of the tube. Substantially incompressible fluid is collected at the first end, an axial component of velocity is increased via the rotating ribbon, and the substantially incompressible fluid is ejected from the second end to provide pumping of the liquid. Additional fluid is added to an interior portion of the pump, preferably to a low pressure region, for various purposes such as mixing, cavitation prevention, increased throughput, etc.

Abstract: The ribbon drive pump has an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of helical coils is mounted in the tube for rotation and the frequency of the coils decreases from the first end to the second end of the cube. Liquid is collected at the first end, an axial component of velocity of the liquid is increased via the rotating ribbon, and the liquid is ejected from the second end to provide pumping of the liquid.

Abstract: A ribbon drive pumping apparatus and method for liquids is disclosed wherein the inherent centrifugal separation that occurs adjacent the pump inlet is used to remove contaminants. The pump has an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of helical coils is mounted in the tube for rotation and the frequency of the coils decreases from the first end to the second end of the tube. Liquid is collected at the first end, contaminants are centrifugally separated and sorbed or bled off, an axial component of velocity of the liquid is increased via the rotating ribbon, and the purified liquid is ejected from the second end to provide pumping of the liquid. A central opening helps decrease cavitation and can be useful for pumping live fish.

Abstract: A ribbon drive pumping apparatus and method for liquids is disclosed. The pump has an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of helical coils is mounted in the tube for rotation and the frequency of the coils decreases from the first end to the second end of the tube. Liquid is collected at the first end, an axial component of velocity of the liquid is increased via the rotating ribbon, and the liquid is ejected from the second end to provide pumping of the liquid.

Abstract: An improved mud motor for drilling bore holes in subterranean formations is formed from a non-magnetic alloy containing no more than 0.1 wt. % iron.

Abstract: The oil field tool motor is particularly suited for use in the oil well shaft environment wherein the temperature within the shaft can climb to nearly 400° F. and wherein the temperature within the motor can drop to nearly −400° F. when liquid nitrogen is intermittently fed therethrough. The motor incorporates a stator sleeve and guide bearings wherein rubber elements thereof, which cause seizure of the motor due to swelling of the rubber against rotating structures therewithin caused by the high ambient temperature and by impregnation by the liquid nitrogen, are replaced with identically sized and configured elements made of a material having a suitable level of lubricity, which material does not interact chemically with or absorb the nitrogen, and the physical characteristics of which are only minimally affected, if at all, by the ambient temperatures, eliminating seizure of the motor under these conditions of use.

Abstract: A ribbon drive pumping apparatus and method for liquids is disclosed. The pump has an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of helical coils is mounted in the tube for rotation and the frequency of the coils decreases from the first end to the second end of the tube. Liquid is collected at the first end, an axial component of velocity of the liquid is increased via the rotating ribbon, and the liquid is ejected from the second end to provide pumping of the liquid. A central opening helps decrease cavitation.

Abstract: A ribbon drive power generation system and method is disclosed. The system is equipped with an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of helical coils is mounted in the tube for rotation and the frequency of the coils increases from the first end to the second end of the tube. Moving water is directed into the first end, an axial component of momentum of the water is decreased via the rotating ribbon, and the rotation is used to induce electricity or drive an electrical generator. The scalability and modular nature of the present invention allow flexible implementation.

Abstract: A vacuum pump comprises an inlet port into which a gas is introduced, an outlet port from which the gas is discharged, a stator, a motor, and a rotor opposing the stator and driven by the motor to undergo rotation to cooperate with the stator to force the gas from the inlet port to the outlet port. The rotor has a body, a spiral thread disposed on the body, and a thread groove disposed between adjacent lines of the spiral thread. An axial length of the spiral thread is shorter than an axial length of the rotor so that a terminal end portion of the spiral thread terminates short of an axial end of the rotor. The terminal end portion of the spiral thread slopes inward toward a surface portion of one of the thread grooves. A junction surface between a terminal end portion of the slope of the spiral thread and the surface portion of the thread groove forms a recessed portion.

Abstract: A helical turbine assembly capable of providing high speed unidirectional rotation under a multidirectional ultra low-head fluid flow is disclosed. The assembly comprises an array of helical turbine units or modules arranged, vertically or horizontally, to harness, for example, water or wind power. Each turbine unit or module comprises a plurality of helical blades having an airfoil profile. The modules for wind power may be mounted to rotatable shafts supported by lightweight structures anchored by guy wires to the ground. The helical turbine can also a provide ship propulsion by utilizing the power of ocean waves. In a further embodiment, a cylindrical distributor is provided in the helical turbine to channel the fluid flow to the blades of the turbine, thereby increasing efficiency and power output. The helical turbine with distributor may be used to lift or lower a body either being submerged into a fast stream or dragged in the fluid.

Abstract: A harden screw form and methods of making same for use with, for example, positive displacement rotary axial screw pumps are disclosed. The methods include the use of a CNC machine with a laser and a special, newly developed optic for selectively hardening the contact areas of screw forms, such as for example, rotors used in positive displacement rotary axial screw pumps such that the rotor undergoes only controllable or predictable distortion as a result of the hardening process. Hardened screw forms manufactured by the CNC/laser/optic process that are free of uncontrollable or unpredictable distortion are also disclosed.

Abstract: A reaction turbine capable of providing high speed unidirectional rotation under a reversible ultra low head pressure and/or high velocity fluid flow is disclosed. The turbine comprises a working wheel with a plurality of airfoil-shaped blades mounted transversely to the direction of fluid flow for rotation in a plane parallel to the fluid flow. The blades are arranged in a helical configuration, a modification of a delta turbine, which ensures that a portion of the blades are always positioned perpendicular to the fluid pressure, thereby creating maximum thrust to spin the turbine and ensuring a continuous speed of rotation with no accelerations and decelerations. The skewed leading edges further reduce resistance to the turbine rotation. A channel having a rectangular cross-section may be provided to direct the fluid flow to the blades.

Abstract: A rotary pump capable of slow movement, for wave power applications. The pump is a helix formed of tubing whereby when the helix is rotated, the inlet end of the tubing scoops water and an outlet end of the tubing directed along the central longitudinal axis of the helix delivers liquid to a conduit means. The helix of tubing is preferably mounted on a shaft which is turned by ratchet device powered by rocking motion or rise and fall of water due to wave motion.

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: An energy conversion device which benefits from forces associated with angular momentum. A mass such as fluid is directed through a conduit from one elevation to a lower elevation with the conduit configured to conform to a decreasing cross-sectional area and oriented in a spiral of substantially conical shape so that fluid entering into the conduit accelerates both by virtue of the decreasing cross-sectional area of the conduit and by the velocity added to the fluid by successively constricting the fluid to an ever tighter spiral path of lesser radius ultimately to an output of the conduit which is in communication with a converter such as a turbine. The converter has an interior passageway in axial alignment with an outlet of the conduit and includes an interior vane which coacts against the fluid exiting from the outlet of the conduit imparting rotation to the rotor which circumscribes the passageway. The rotor is supported on a bearing block and operatively couples to a stator for power output.

Abstract: A multistage drag turbine assembly is provided for use in a downhole motor, the drag turbine assembly comprising an outer sleeve and a central shaft positioned within the outer sleeve, the central shaft having a hollow center and a divider means extending longitudinally in the hollow center for forming first and second longitudinal channels therein. A stator is mounted on the shaft. The stator has a hub surrounding the shaft and a seal member fixed to the hub, wherein the hub and the shaft each have first and second slot openings therein. A rotor comprising a rotor rim and a plurality of turbine blades mounted on the rotor rim is positioned within the outer sleeve for rotation therewith with respect to the stator such that a flow channel is formed in the outer sleeve between the turbine blades and the stator.

Abstract: A rotary internal combustion engine and a power plant having at least one such engine. The engine has a generally cylindrical rotor with one or more helical grooves on the outside rotatably mounted in a cylinder, means for introducing a combustible fuel-air mixture into the cylinder at one end, a spark plug for firing the fuel mixture, and means for venting the products of combustion from the opposite end of the cylinder. A main air compressor driven by the engine supplies pressurized air as part of the combustible fuel-air mixture. The rotor has an axial passage connected to an auxiliary air compressor and radial passages extending out from the axial passage to the periphery of the rotor for providing a cushion of air between the rotor and the inside of the cylinder which acts as a bearing and also has a cooling effect. An outer housing encloses the engine cylinder and cooling air is introduced into the space between this housing and the cylinder from another air compressor driven by the engine.

Abstract: A waste-heat turbine unit is equipped with a rotating cylinder that is formed as a hollow body that carries a blading on its exterior. The blading is subjected to the exhaust gases of an internal-combustion engine that is a component of a drive assembly, particularly for motor vehicles. The blading, that is located adjacent to exhaust gas duct outlets of the internal-combustion engine, extends spirally along the cylinder. As a result, the stability of the cylinder is increased, and the heat transfer from the exterior to the interior of the cylinder is optimized, whereby the utilization of energy is improved.

Abstract: The turbine comprises a casing having a plurality of grooves spirally formed upon an inner circumference thereof and a rotor having a plurality of grooves spirally formed upon an outer circumference thereof, each groove of the rotor having a plurality of vanes. The plurality of grooves in the casing are opposed to the plurality of grooves of the rotor, thereby a plurality of flow passages are formed spirally.

Abstract: A method of manufacturing a rotor (70) for use in an air motor. A shaft (10) is machined to have bearing surfaces (16 and 18) and adjacent ends (12 and 14), respectively. A working surface (20) with helix grooves (22, 24 and 26) is machined into the shaft (10). A locking surface (34) is machined into the shaft between the working surface (20) and end (14). A ring (36) is machined with helix grooves (38, 40 and 42) on its periphery and an inner diameter (44). The inner diameter has a diameter less than the locking surface (34) but greater than the bearing surface (18). The ring (36) is placed on bearing surface (18) of shaft (10). The shaft (10) with ring (36) on bearing surface (18) is placed in a fixture (50) and a tension force is applied to ends (12) and 14 ). The tension force causes the shaft (10) to axially expand and radially contract.

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 fluid-powered rotary motor, and method of operating the same. Pressured fluid is introduced to the annular clearance between a rotor and a second member, and reaches an outlet by travelling circumferentially within that clearance. The direction of motion of the fluid on entering the clearance is substantially tangential relative to the rotor, so as to avoid any substantial jet impingement of the fluid upon the rotor, and so that the rotor is driven substantially wholly by the hydrodynamic viscous drag action of the fluid upon it. Methods of profiling the rotor surface are disclosed which enhance the surface area over which the viscous drag action can be effected.

Abstract: A wind driven power generating apparatus which is automatically vertically adjustable depending upon the wind velocity.

Abstract: A gas-operated motor that comprises a divergent nozzle helically wrapped around a rotary support shaft to convey gas from a high pressure inlet chamber to a low pressure outlet chamber. The gas is progressively depressurized during its flow along the nozzle passage; pressure energy is converted to a turning force on the shaft. The structure represents a relatively simple, low cost mechanism for converting gas pressure energy into high speed rotary motion.

Abstract: A water turbine generator system for use in a stream or river, said system having a catch basin formed by an end wall, a plurality of water chutes downstream of the catch basin and in communication with the catch basin by gates and closures and a plurality of turbines and associated generators journalled in the chutes for rotation by water passing therethrough. The turbines are provided with ribbon flight blades set at a pitch angle to maximize torque.

Abstract: A fluid engine comprising a coiled conduit having a fluid inlet and a fluid outlet and supported to rotate about its axis in a partially immersed condition within a first fluid which interfaces with a second fluid having a different fluid density. Rotation of the conduit about its axis causes the fluid inlet to alternately be immersed in the first and second fluids whereby a quantity of each fluid is entrapped within each convolution of the conduit resulting in an unbalanced fluid condition producing a gravitational turning moment. Pressure differential across the coiled conduit between the inlet and the outlet maintains fluid flow through the conduit from the inlet to the outlet thereby sustaining the unbalanced condition which causes conduit rotation. The required differential may be provided by a head of water or may be created by evaporating a liquid or by thermally expanding a gas.

Abstract: A wind turbine is provided consisting of a cone or the frustum of a cone, on which are mounted in a more or less helical fashion, a plurality of blades having a varying pitch angle. The blades are arranged in a manner to utilize the initial force of the wind and to continue to utilize the diminishing force of the wind after it passes over the leading end of the vanes.Provided also is a shroud which enhances the wind velocity and provides a suitable diffuser augmenter to dissipate the spent wind force.

Abstract: Wind turbine apparatus is mounted on a stationary tower and disposed to intercept wind currents. An air intake member is mounted thereon having a frusto-conical shape for accelerating the velocity of the wind intercepted by the intake unit or member. A turbine unit is mounted on a stationary frame to rotate in relation to the frame about its longitudinal axis. The turbine unit is disposed at the output of the air intake unit to receive the air intercepted by the air intake unit. The turbine has a plurality of ducts each having an input facing the output of the air intake unit. The ducts extend substantially longitudinally and curve about the longitudinal axis of the turbine. The duct outlets are disposed about the periphery of the turbine at a substantially right angle to the longitudinal axis to emit air jets tangential to the turbine unit. A power shaft is attached to the output of the turbine to connect to a generator or any mechanical driven machine.