Abstract: A hermetic compressor includes a casing, a cylinder in the casing, a first bearing and a second bearing defining a compression space together with the cylinder, a roller located at an eccentric position with respect to an inner surface of the cylinder and configured to vary a volume of the compression space, and a vane inserted into the roller to rotate together with the roller, and drawn out toward the inner surface of the cylinder to divide the compression space into compression chambers. An inlet port in communication with the compression space is defined in the first bearing, and an intermediate plate is located between the cylinder and the inlet port and defines a suction passage connected to the inlet port, where a peripheral length of an inner peripheral surface of the suction passage is greater than a peripheral length of an outer peripheral surface of the suction passage.

Abstract: A refrigerant filling rotary compressor includes a shell, a compressing mechanism, an injection tube and an injection valve assembly. The compressing mechanism includes a cylinder, a main bearing, an auxiliary bearing, a crank shaft, a piston and a sliding vane. An inner wall of the cylinder chamber of the cylinder is formed with a filling mouth, and the cylinder is provided with a filling channel with a filling hole.

Abstract: A rotary compressor (102) has a shaft (4), a cylinder (5), a piston (8), a first vane (32), a second vane (33), a first suction port (19), and a second suction port (20). The first vane (32) divides a space between the cylinder (5) and the piston (8) along a circumferential direction of the piston (8). The second vane (33) further divides the space divided by the first vane (32) along the circumferential direction of the piston (8) so that a first compression chamber (25) and a second compression chamber (26) having a smaller volume than the first compression chamber (25) are formed within the cylinder (5). The first suction port (19) introduces a working fluid into the first compression chamber (25). The second suction port (20) introduces a working fluid into the second compression chamber (26). The second suction port (20) is provided with a suction check valve (50).

Abstract: The invention relates to a rotary lobe pump for conveying solids-laden fluids engendered in agriculture, in which the conveyed fluid volume flow adapts itself to different operating modes. For improved self-priming, the rotary lobe pump is designed for vertical mounting of the rotary lobes, wherein an angular gear is provided. The rotary lobes are mounted in a topside or underside cover, wherein the axes of the rotary lobes are vertically oriented. Using one of the covers, the rotary lobes can be vertically removed and maintained without having to dismantle other pump components from the pump housing. The rotary lobes can also be removed together with the angular gear as an integral pump component using one of the covers.

Abstract: Rotary vane pumps include casings having asymmetrical cavities that accommodate a rotor. For a single pump chamber, one portion of the rotor abuts or nearly abuts the inner wall of the cavity at a single location while one portion of the rotor and the inner wall are not in contact with each other thereby defining a pump chamber. For a dual pump chamber embodiment, two diametrically opposed portions of the rotor abut or nearly abut the inner wall of the cavity while two portions of the rotor and inner wall are not in contact with each other thereby defining the two pump chambers. The two pump chambers are disposed on opposite sides of the minor axis of the cavity. The cavities of each pump are skewed so each pump chamber is larger in volume at the inlet end than at the outlet end.

Abstract: Scroll type fluid machinery, in which two stationary scrolls (2A, 2B) are fixed onto a housing (1), and form volume changing mechanisms (50A, 50B) with matching orbiting scrolls (3A, 3B). Three orbiting units (40) are located between the two volume changing mechanisms. Each orbiting unit comprises a rotating member (10) and a thrust-cancelling shaft (20). Assembly sets of the thrust-canceling shaft consist of turning elements and a connector, which in turn connects with orbiting scrolls through threads. There exists only circumferential constraint but no axial constraint between the connector and the turning element. Rotating turning element will rotate the connector, and thus move the two orbiting scrolls closer or farther through the threads on the connector. The rotating member of this invention further provides a larger space to the supporting bearings (14A, 14B) of the thrust-canceling shaft, and also eases component manufacturing, machinery's assembly and adjustment, and bearings' cooling.

Abstract: Combined booster and primary pump arrangements can be bulky and require separate supplies of purge gas and cooling water. In order to overcome this problem invention provides a vacuum pump in which two or more pumping mechanisms, i.e. the booster pump and main pump, are housed in the same stator. The invention further provides a vacuum pump stator comprising at least two operatively interconnected cavities, wherein at least two of the cavities each comprise at least one rotor-receiving portion shaped to receive two or more at least partially intermeshing rotors, and wherein an axis of a rotor-receiving portion of a first one of the cavities is offset with respect to an axis of a rotor-receiving portion of a second one of the cavities.

Abstract: The present invention provides a vane rotary type gas compressor including a casing, a compressor main body provided within the casing and compressing a coolant sucked by rotary drive, and a drive power transmitter applying a rotary drive power to the compressor main body, and an outer peripheral wall of the casing is provided with a vibration transmission suppressing rib continuously from a mounting portion on a vehicle side, the vibration transmission suppressing rib suppressing vibration transmission caused by the rotary drive of the compressor main body.

Abstract: A pump housing has a cylindrical interior surface having outlets and a pair of side surfaces defining, in combination with the interior surface, a substantially cylindrical chamber. The surfaces have inlets. A rotor has a void, lobes and, for each lobe, a throughpassage. The rotor is positioned in the chamber such that the void communicates with the inlet to receive fluid and the throughpassage for each lobe provides communication between the void and chamber. The rotor is rotatably mounted in the chamber such that the lobes traverse the cylindrical surface. Provided for each outlet is a vane. As the rotor turns, the rotor outer surface is traversed by the vane to create, as the vane traverses a throughpassage, a chamber ahead of the vane which increases in volume and communicates with the throughpassage, and a chamber behind the vane which decreases in volume and communicates with the outlet port.

Abstract: This rotary compressor with an installed circulation control unit utilizes a method to control a rotary compressor to start or stop injecting refrigerant at a predetermined velocity by means of an electromagnetic coil that is installed onto the rotary compressor. The end of the electromagnetic coil is tenon-shaped and enters into a mortise that is formed on a vane or an arm of the rotary compressor so that the operation alternates between suction and compression at a predetermined period, enabling control of the rate of refrigerant circulation. In addition, the rotary compressor does not restart during its operation, which enhances the performance of the air-conditioning system, saves costs and energy, and enables the air-conditioning system to be easily maintained and repaired.

Abstract: Rotary vane pumps include casings having asymmetrical cavities that accommodate a rotor. For a single pump chamber, one portion of the rotor abuts or nearly abuts the inner wall of the cavity at a single location while one portion of the rotor and the inner wall are not in contact with each other thereby defining a pump chamber. For a dual pump chamber embodiment, two diametrically opposed portions of the rotor abut or nearly abut the inner wall of the cavity while two portions of the rotor and inner wall are not in contact with each other thereby defining the two pump chambers. The two pump chambers are disposed on opposite sides of the minor axis of the cavity. The cavities of each pump are skewed so each pump chamber is larger in volume at the inlet end than at the outlet end.

Abstract: A motor-driven fluid pump has a positive displacement rotary pumping element with a circular rotating cam carried outwardly of the element that is rotated with the pumping element by contact with pistons carried radially by the pumping element. The pump maintains a constant mass flow rate for a given input command by adjusting for fluid type, for measured fluid operating temperature, and for changing motor speed according to a pre-set algorithm. The motor-driven fluid pump also has the capability to maintain a constant flow output over the life of the pump by adjusting for internal wear and having the capability to predict its remaining life by comparing its current motor speed against the maximum allowable motor speed.

Abstract: A binary vane pump is provided. The binary vane pump includes a pressure plate having a first discharge port, a thrust plate having a second discharge port, a ring positioned axially between the pressure plate and thrust plate, the ring having an inner cam surface, and a rotor rotatably disposed within the ring, the rotor having a plurality of slots and a plurality of vanes, vanes of the plurality vanes corresponding to respective slots of the plurality of slots and radially movable with the respective slots. A first and second pump chamber are disposed within the ring, separated by the rotor, vanes, pressure plate and thrust plate, the first pump chamber configured to discharge fluid to the first discharge port and the second pump chamber configured to discharge fluid to the second discharge port. A shaft extends through the pressure plate, thrust plate, ring and rotor and drives the rotor.

Abstract: In a vane rotary compressor, a discharge valve on a discharge flow channel communicates an operating chamber in a compression element with a discharge hole. The discharge valve is pushed from an opening portion of a discharge valve groove to an outer circumferential surface of a roller by a high-pressure refrigerant when pressure in an operating chamber is lower than the pressure of the high-pressure refrigerant. The discharge valve is pushed back into the discharge valve groove by the refrigerant pressure in the operating chamber when the pressure in the operating chamber is higher than the pressure of the high-pressure refrigerant. The discharge flow channel is closed by the outer circumferential surface of the discharge valve pushed out from the opening portion of the discharge valve groove and the outer circumferential surface of the roller, and opens when the discharge valve is pushed back into the discharge valve groove.

Abstract: The present invention discloses a shaft rotating constant-width curve double-stator multi-speed motor, comprising a rotor (5), an inner stator (19), an outer stator (3), sets of sliders (22) mounted on the rotor, a left end cover (6) and a right end cover (1), a curve of an external surface of a front portion of the inner stator (19) and a curve of an internal surface of the outer stator (3) are two similar curves which are smooth and closed, wherein oil distributing ports in outer stator (20) are opened on the outer stator (3) in the number of 2×n (n is the number of actions), oil distributing ports in inner stator (24) are opened on the external surface of the front portion of the inner stator (19), and the inner stator (19) is mounted in the rotor (5). The multi-speed motor of the present invention works stably and has a small volume, a light weight, a high efficiency and a large specific power.

Abstract: A double action rotary pump forcibly delivers fluid such as liquid or gas. A transmission unit operates at uniform or non-uniform angular speeds using driving force transmitted from a motor via a power transmission system. An operating unit is provided in series with the transmission unit. A piston of the operating unit has a pair of heads, which rotate at non-uniform angular speeds in a counteracting fashion while maintaining the distance between shafts, and divides the spaces inside cylinders. The volumes of the divided spaces of the cylinders are repeatedly and alternately contracted and expanded in response to the rotation of the piston, so that the cylinders counteractively and continuously perform intake and exhaust operations, thereby forcibly delivering fluid. The structure of the power transmission system is improved such that the sum of flow rates that are pumped by the piston at a predetermined time point stays uniform.

Abstract: A fluid machine (14, 102, 108) includes a plurality of fluid units (16, 20) each having a rotator (40, 66) and configured to let in and out a working fluid as the rotator (40, 66) rotates, and a drive shaft (72) to which the rotators (40, 66) of the fluid units (16, 20) are coupled, wherein an Oldham coupling (85) is arranged at a shaft section of the drive shaft (72) located between the rotators (40, 66).

Abstract: A rotary compressor (102) has a shaft (4), a cylinder (5), a piston (8), a first vane (32), and a second vane (33). The first vane (32) divides a space between the cylinder (5) and the piston (8) along a circumferential direction of the piston (8). The second vane (33) further divides the space divided by the first vane (32) along the circumferential direction of the piston (8) so that a first compression chamber (25) and a second compression chamber (26) having a smaller volume than the first compression chamber (25) are formed within the cylinder (5). The piston (8) and the second vane (33) are integrated together, or the piston (8) and the second vane (33) are coupled together.

Abstract: A vane pump has an inlet window and a discharge window formed within a cam surface. The vane pump includes a rotor carrying a plurality of radially extending vanes which are biased into contact with the cam surface. The rotor has a direction of rotation such that one end of the inlet window can be described as an upstream end, and an opposed end as a downstream end. The inlet window extends for a relatively long width along a rotational axis of the rotor at the upstream end. Angularly inwardly extending sides reduce an axial width of the inlet window in a direction moving in a downstream direction from the upstream end.

Abstract: A sliding vane rotary expander is used in a waste heat recovery system for a power plant. One example rotary expander has multiple stages with the vane assemblies disposed in bearing supported rings. Another example rotary expander has multiple stages with the vane assemblies disposed in an elliptical cavity. A balance valve equalizes the flow within the stages. Single stage rotary expanders may also be used.

Abstract: A rotary fluid machine includes a cylinder with an annular cylinder chamber, an annular piston and a blade. The annular piston is disposed in the cylinder chamber so as to be eccentric to the cylinder. The annular piston divides the cylinder chamber into an outer cylinder chamber and an inner cylinder chamber. The blade is arranged in the cylinder chambers to divide each of the outer and inner cylinder chambers into a high-pressure chamber and a low-pressure chamber. The cylinder and the piston are arranged to eccentrically move relative to each other. A height of the outer cylinder chamber is different from a height of the inner cylinder chamber as measured in a direction of a rotational axis of the rotary fluid machine.

Abstract: The invention relates to a vane machine (500) for the expansion or compression of gaseous media, for example, air, exhaust gases of an internal combustion engine, vaporous media, or a mixture thereof, comprising a housing (505) with a cylindrical space and an inlet opening (510) and an outlet opening (520) into the cylindrical space, with a parallel offset or eccentrically disposed shaft (101) relative to the center axis (501) of the housing, at least one first and one second circular disc (102, 103; 401, 402) disposed on the shaft (101) offset in a parallel fashion relative to each other. The invention further comprises sliders (104 to 115) that are guided by the circular discs and can be displaced in the direction of the inner wall of the housing (505), wherein a vane is formed by two neighboring sliders (108, 109/109, 110; . . .

Abstract: A gear pump includes a drive shaft, a rotatable pump element mounted on the drive shaft, a side wall member disposed on one side of the pump element, and formed with a shaft hole through which the drive shaft extends, and a side plate disposed on the other side of the pump element. The gear pump further includes a connecting section connecting the drive shaft with the pump element in a manner to prevent relative rotation and to allow relative axial movement between the drive shaft and the pump element. The connecting section includes a drive recess formed in the pump element, and a drive projection projecting radially outwards from the drive shaft, and engaging in the drive recess to prevent the relative rotation. The drive projection is arranged to limit the axial movement of the drive shaft relative to the pump element with one of the side wall member and the side plate.

Abstract: The present invention provides a motor, comprising: a stator including a coil wiring portion to which power is supplied; a rotor, which includes conductive bars, flux barriers, and permanent magnets, and rotates through an interactive electromagnetic force between the conductive bars, flux barriers, and permanent magnets and the coil wiring portion of the stator; an integrated capacitor, which is electrically connected to the coil wiring portion and includes two capacitors connected to each other in parallel, an electrical switch serially connected to one of the two capacitors, and a casing on which the two capacitors and the electrical switch are securely mounted.

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

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

Abstract: In a multicylindrical rotary compressor constituted to be usable by urging an only first vane with respect to a first roller by means of a spring member to switch a first operation mode in which first and second rotary compression elements perform compression works and a second operation mode in which substantially the only first rotary compression element performs the compression work, an object is to reduce generation of collision noises due to collision of the second vane with the second roller at a time when the first operation mode is switched to the second operation mode, and a pressure in a back-pressure chamber of the second vane is discharged on a low-pressure chamber side in a second cylinder in a case where the first operation mode is switched to the second operation mode.

Abstract: In a compression mechanism of a rotary compressor, a cylinder chamber is defined by a cylinder and a second housing. A back surface side gap is defined between an end plate part of the cylinder and a flat plate part of a first housing. The first housing is provided with a communicating path and a differential pressure regulating valve. When the difference between the suction pressure and the discharge pressure is small, the discharge pressure is introduced through the communicating path to an intermediate gap whereby both an internal gap and the intermediate gap are placed at the same pressure as the discharge pressure. Conversely, when the difference between the discharge pressure and the suction pressure is great, the communicating path is made discontinuous by the differential pressure regulating valve whereby the intermediate gap is placed at an intermediate pressure lower than the discharge pressure.

Abstract: Methods and apparatuses are disclosed that create variable volume chambers. A method includes synchronizing rotation of a plurality of geometrical elements to create a first chamber with the plurality of the geometrical elements and a housing. A continuous portion of the first chamber, defined by the plurality of geometrical elements, permits a volume of the first chamber to be varied. An apparatus includes a first chamber disposed between a plurality of geometrical elements and a housing. The plurality of geometrical elements are configured for synchronized rotation within the housing and a continuous portion of the first chamber, defined by the plurality geometrical elements, permits a volume of the first chamber to be varied. A plurality of chambers can be formed with a plurality of geometrical elements configured for synchronized rotation within a housing.

Abstract: A rotary fluid machine includes an eccentric rotary piston mechanism that is configured such that an annular piston is accommodated in an annular cylinder chamber of a cylinder to form an outer cylinder chamber and an inner cylinder chamber. The cylinder and the annular piston relatively execute eccentric rotary motion. Each of the outer and inner cylinder chambers is divided by a blade into a first chamber and a second chamber. The blade and the annular piston are mutually movably coupled together by a swinging bushing. The blade is provided, in its contact parts with the annular piston and the swinging bushing, with sliding surfaces in order to prevent the occurrence of seizure and wear of the blade and the annular piston and the occurrence of gas leakage between the first chamber and the second chamber during operation.

Abstract: A rotary compressor includes a cylinder to form a first compressing chamber and a second compressing chamber partitioned from each other and including a first vane slot and a second vane slot which are formed in the first compressing chamber and the second compressing chamber, respectively, and a first roller and a second roller to respectively rotate in the first compressing chamber and the second compressing chamber to compress compressing media, the rotary compressor operating in a full load running mode in which a load running is concurrently performed in the first compressing chamber and the second compressing chamber, and in a partial load running mode in which a load running is performed in only the second compressing chamber, the rotary compressor further including a first vane which is controllably accommodated in the first vane slot, a vane driving part to enable the first vane to contact and be distanced apart from an outer surface of the first roller to perform a load running and a no-load running

Abstract: An object of the present invention is to provide a method for manufacturing a multi-stage compression type rotary compressor which can avoid the replacement of parts to be used as much as possible to reduce costs and also which enables easily setting an appropriate displacement volume ratio while preventing the compressor from being increased in size. The gist of the present invention is that an inner diameter of a lower cylinder is altered without altering its thickness (or height), and a displacement volume ratio between first and second rotary compression elements is set to an optimum value in accordance with the alteration.

Abstract: A scroll fluid machine comprises an orbiting scroll and front and rear stationary scrolls. The orbiting scroll is driven by a driving shaft via an eccentric portion and has front and rear orbiting scroll wraps. The front and rear stationary scroll have front and rear orbiting scroll wraps respectively. The orbiting scroll is revolved by the driving shaft with respect to the stationary scrolls while the front and rear orbiting scroll wraps are engaged with the front and rear stationary scroll wraps to create front compressing and rear expanding sections. Fluid expanded and cooled in the expanding section is used for cooling parts of the machine.

Abstract: A flow divider for use with fluent materials, such as raw sausage. The flow divider is a combination of at least two housing bodies with chambers defined by elliptical cylindrical sidewalls. Hubs with transverse vanes have necked-down regions at one end that are rotatably mounted in a similarly-sized aperture in an endwall of each housing body. The vanes' tips follow the elliptical cylindrical sidewalls in the manner of a vane pump. Sausage is conveyed from a conventional pump into the inlet of the flow divider, and flows through passages into inlet cavities, one inlet cavity per chamber, through the sub-chambers formed by the space between the vanes, and outlet cavities, one outlet cavity per chamber. The amount of sausage that flows through each chamber is equal due to the driving linkage between the hubs of each housing body.

Abstract: A multi-stage compression type rotary compressor, having a driving element and a first and a second rotary compression element that are driven by the driving element in a sealed container, is provided. The refrigerant compressed by the first rotary compression element is discharged into the sealed container, and said discharged refrigerant with an intermediate pressure is then compressed by the second rotary compression element. By cooling the refrigerant absorbed into the second rotary compression element, the rise in the temperature of the refrigerant that is compressed and discharged by the second rotary compression element can be suppressed. And, the supercooling degree of the refrigerant is increases before reaching the expansion valve to improve the cooling ability of the evaporator.

Abstract: A balanced rotary vane pump for a motor vehicle power steering system includes a rotor having fifteen vanes disposed in a three lobe cam ring. Three inlet ports and three outlet ports disposed in equally spaced pairs provide fluid communication to the three lobes of the cam ring. Because the subject vane pump provides a significantly larger number of pump pulses per revolution which are more closely spaced in time and may define smaller volumes, the pulsatile nature of the output and thus vibration as well as the excitation of sympathetic vibration is greatly reduced.

Abstract: A rotary piston assembly including a piston housing with a central axis, and an annular chamber defined about the central axis. A pair of pistons are disposed about 180 degrees apart from one another within the annular chamber and rotate about the central axis a first angular velocity. The assembly also includes an abutment housing including a gap defined in its peripheral wall structure, and structured to rotate about an abutment axis at a second angular velocity. The abutment housing overlaps the piston housing and rotates therethrough to define an interior chamber therebetween, the first and second angular velocities being defined relative to one another so that the gap of the abutment housing rotates through the annular chamber when each of the pistons passes into and out of the interior chamber, thereby allowing the pistons to pass into and out of the interior chamber through the gap.

Abstract: A cat and mouse type device includes at least one rod fixed to a shaft with at least one planetary gear rotatably attached to an end of the rod. Bars extending away from the planeatary gear ride in grooves on the faces of two rotors. The planetary gear rotates around a fixed sun gear attached to the housing, so that the two rotors rotate with respect to one another and with respect to the housing in a predetermined manner. Protuberances may be provided to extend away from the rotors and the planetary gear to interact with one another during rotation, preventing the rotors from deadlocking.

Abstract: A pump which is easy to manufacture and which has a high efficiency and low vibration includes a pair of identical circular-shaped impellers which are respectively eccentrially and rotatably connected to respective parallel shafts so as to rotate oppositely to one another while keeping a constant spacing therebetween, a pair of identical cylindrical impeller chambers in which the impellers are respectively positioned such that the impellers circumferentially slide along an inner peripheral surface of the impeller chambers, one impeller acting to discharge fluid from the impeller chamber in which it rotates and the other acting to intake fluid into the impeller chamber in which it rotates, and a connecting plate that couples the impellers together and causes them to be spaced a constant distance apart.

Abstract: A multiple rotary fluid machine which includes a stator and a plurality of coaxial rotors held together, sealing vanes and fluid ports which are all offset alternately in the radial plane and form a multiplicity of rotary fluid machines or stages which are dislocated in the radial plane with respect to each other such that the total flow or torque produced by the multiple fluid machine is uniform at any time in the operating cycle or vary during the working cycle in any predestined manner.

Abstract: A multiple rotary fluid machine which includes a stator and a plurality of coaxial rotors held together, sealing vanes and fluid ports which are all offset alternately in the radial plane and form a multiplicity of rotary fluid machines or stages which are dislocated in the radial plane with respect to each other such that the total flow or torque produced by the multiple fluid machine is uniform at any time in the operating cycle or vary during the working cycle in any predestined manner.

Abstract: A prime mover or pump comprising of a first stationary plate and a second plate arranged parallel to the stationary plate and spaced therefrom. The second plate is rotatably mounted about its central axis. A plurality of elongated wall elements are disposed between the plates. The wall elements slidably bear on the plates to form a seal therewith such that working chambers are created. Each wall element is articulated at one end point to a further wall element such that the wall elements form a movable grid. The grid is rotatably secured at at least one point to the stationary plate and at at least two points to the rotatable plate such that the working chambers assume their maximum and minimum volumes upon rotation of the rotatably plate.

Abstract: A pneumatic power tool for tightening screw joints includes a primary motor 11 for the high speed running down sequence and a secondary motor 12 for the high torque final tightening sequence. The tool includes a coupling gearing 18 providing a high ratio gearing for the secondary motor 12, a gearing of a substantially lower ratio for the primary motor 11 and a one-way clutch 30 by which the secondary motor 12 is automatically engaged at decreasing tightening speed. An air supply valve 33 is employed to substantially reduce the air consumption of the tool by keeping the air supply to the secondary motor 12 shut off until a certain degree of tightness in the joint is obtained, after the valve 33 is opened and the secondary motor 12 is energized.A reduction gearing 19 is supported in a casing 90 which is rotatively connected to the tool housing 10 and provided with a laterally extending torque reaction bar 92.

Abstract: In a vehicle or device a fluid motor is employed to drive rotary members, such as wheels, propellers, tracks. The motor is provided with an arrangement which includes a control means and an axially moveable member. By utilizing the control means for example by a flow of fluid, the axially moveable member is used to apply an action, which is not common to the usual operation of fluid motors. The arrangement may be used to arrest the rotor of the motor from rotation, when no pressure is in the driving fluid line. It may also be used to control the pitch of propellers with variable pitch arrangements. Also possible is to use the arrangement to automatically obtain an auto-rotation of rotor blades on vertical axes of vertically take off and landing vehicles, when the pressure in the fluid line to the motors for driving the motors drops below a predetermined minimum of pressure.

Abstract: An apparatus having at least one alternately expanding and contracting chamber comprises a plurality of cylindrical rollers each having an exterior surface in continuous rolling engagement with two adjacent rollers, the rollers being rotatable along parallel axes, with at least one of the rollers rotating about an eccentric and/or reciprocating axis. The rollers are preferably of equal length with adjacent rollers being in contact substantially along their entire respective lengths, the chamber being defined between the rollers and enclosed at its ends by end plates.

Abstract: An apparatus having an alternately expanding and contracting chamber comprises at least one pair of cylindrical rollers each having an exterior surface in continuous rolling engagement with the surface of the other roller of the pair, the rollers being rotatable along parallel axes, and two parallel side walls, with each one of the rollers also being in continuous rolling engagement with one of the side walls. A third wall is opposite the rollers and joins the two side walls wherein the chamber is defined between these walls and the pair of rollers, and is enclosed.