Abstract: Water well pump plunger efficiency is improved by providing a pair of upwardly open outwardly flared wall cups surrounding a pump plunger and supported in superposed relation by a sleeve in the lowermost cup. A fluid passageway through the base of the uppermost cup insures filling the lowermost cup on the plunger upstroke.

Abstract: A vapor-air steam engine is described which operates at high pressure and utilizes a working fluid consisting of a mixture of compressed air, fuel combustion products and steam. In the new cycle described working fluid is provided at constant pressure and temperatures. Combustion air is supplied adiabatically by one or more stages of compression. Fuel is injected at pressure as needed. From 40% to all of compressed air is burned. Water is discretely injected at high pressure to produce steam and thus provide an inert high specific heat diluent required for internal cooling of an internal combustion turbine or other type system. The use of extensive water injection inhibits the formation of pollutants, increases the efficiency and horsepower of an engine, and reduces specific fuel consumption. The new cycle may also be operated open or closed; in the latter case, water may be recouped via condensation for regenerative reuse.

Abstract: A pump apparatus includes an outer cylindrical housing having end plates, and a power conversion assembly supported for rotation within the outer housing. A torque input shaft provided on one of the end plates has a "primary" gear on its free end. The inner housing includes a crank case within which cylinders are arranged at spaced radial locations. Double-acting pistons are housed within the cylinders. Crank members supported by the crank case for rotation are coupled to the pistons via force transmitting elements to drive the pistons with reciprocating motion in the cylinders. Each of the crank members includes a "secondary" gear engaged with the primary gear. Each crank member includes a linkage coupled with a piston rod so that the pistons are driven in reciprocating motion in the cylinders.

Abstract: A gear pump having three gears, including; a pump case consisting of a pump body and a cover for covering most of the body; three gears which are supported by a rotating shaft on the pump case and engaged with each other in series; first and second gear pumps each composed of one central drive gear and one of the driven gears on both sides of the drive gear; a non-return valve and a flow regulation valve which are opened at a predetermined pressure; an inlet port which is opened at one end of the pump case and connected through a feed path to the suction side of the two gear pumps; an outlet port formed on the discharge side of the first gear pump in the pump case; a regulation path passing from the discharge side of the second gear pump through the non-return valve to the outlet port; and a flow regulation path passing from the regulation path through the flow regulation valve to an oil pan.

Abstract: The present invention concerns a noise reduction method and a noise reduction device for a hermetic rotary compressor. It is designed to reduce the very high level of low frequency sound generated by the compressor by preventing the formation of reflected waves along the circumference which produce the resonant sound mode, and thus by preventing the amplification of the low frequency gas pulsations. In the present invention, the amplitude of the reflected waves that form the resonant sound mode is reduced by installing the muffler outlets at one half the wavelength of the reflected waves in the cavity of the compressor housing from the exhaust valve where the compressed gas from the cylinder enters the muffler. By positioning these outlets to face each other so that, of the pulsating gas components form these two outlets, those at the frequency of the reflected waves formed in the circumferential direction of the cavity of the compressor housing will undergo a 180.degree.

Abstract: A full-circumferential flow pump has a circumferential fluid passage between a sheet metal pump casing and a motor provided in the pump casing. The full-circumferential flow pump comprises a suction-side casing having a suction nozzle, and an outer cylinder connected to the suction-side casing and accommodating the canned motor therein. The suction-side casing and the outer cylinder have flanges, respectively extending radially outwardly from an open ends thereof. The adjacent flanges of the suction-side casing and the outer cylinder are clamped by clamping flanges to connect the suction-side casing and the outer cylinder.

Abstract: A centrifugal blood pump for heart-lung machines or the like. An impeller is provided with pump vanes and a magnet. The impeller is rotatably accommodated in a casing having an inlet and an outlet. A magnet drive means is disposed outside the casing. The impeller is supported by at least three balls above a bottom plate of the casing, held at the center of the bottom plate and rotated around the center axis of the impeller by the magnet means and the magnet drive means. When the upper and lower ends of the rotation shaft of the impeller are supported by the casing, the upper end of the rotation shaft is supported by a bearing embeddedly disposed at the top section of the conical section of the casing, and the inlet of the casing is disposed adjacent to and eccentric from the top section.

Abstract: A valveless, double acting, positive displacement fluid transfer device is operable either as a pump when driven by a power source, or as a motor when the fluid working portion is driven by fluid under pressure through the inlet and outlet ports of the device. The device is based upon the principle of a plunger and cylinder which are angularly offset from a rotary shaft, and connected to the rotary shaft by radial arm and a spherical bearing. The plunger simultaneously rotates and reciprocates as the rotary shaft revolves, due to the plunger stroke varying cyclically due to the angular offset, as the plunger rotates within the cylinder. The plunger includes separate internal inlet and outlet passages therethrough, which cyclically communicate with an inlet port and an opposite coaxial outlet port in the cylinder to provide both suction and discharge with each plunger stroke.

Abstract: A micro-flow controlling pump according to the present invention is used for controlling a micro-flow of a liquid in an experiment using a chemical agent for examining permeability of a membrane, reaction of a flow system, reflux of vital tissues, or the like. The micro-flow controlling pump includes: a pump body formed to have a cylindrical wall and a bottom surface, and be provided with an outflow tube formed at an outer surface of the cylindrical wall; a cover body formed to be detachably attached to the pump body and be provided with an inflow tube; a magnet rotator arranged inside the pulp body having criss-crossing blade parts; and a magnet stirrer arranged outside the pump body, having magnetic force by which the magnet rotator in the pump body can be rotated.

Abstract: An axial piston hydraulic unit has a valve plate assembly positioned between a head and a rotatable cylinder barrel. The assembly includes a pair of valve plates stacked together to function as a single valve plate. The valve plate assembly defines a restricted flow path for providing initial communication between an approaching piston bore of the rotatable barrel and an intake port and a discharge port extending through the pair of plates. A first portion of the flow path is defined in the valve plate adjoining the head and a second portion of the flow path is defined in the valve plate adjacent the barrel. The stacked valve plates are hydraulically held together by a pair of pressure balancing devices.

Abstract: The oil sump and suction plenum of a hermetic compressor are in continuous fluid communication through an oil equalization port assembly. Additionally, communication is established between the oil sump and the suction plenum if pressure in the oil sump is greater than that in the suction plenum by more than a few pounds. Multiplexing is established through a port in the suction plenum.

Abstract: A low profile motorized impeller assembly is provided for use in an air moving blower product. The assembly has a motor mounting base onto which a stator is fixedly attached. An impeller having a plurality of vanes has a ring-magnet rotor integrated therein. A pair of bearings are received in a beating receiving boss in the impeller, and a shaft which is fixedly attached to the motor mounting base is received therein. A plurality of permanent magnets are mounted on the motor mounting base between the arms of the stator so that when the windings of the stator are de-energized the permanent magnets attract the poles of the ring magnet to an offset position.

Abstract: A swash plate type variable displacement compressor is disclosed for adjusting an inclined angle of a swash plate (13) placed in a crank chamber (2a) in accordance with a pressure difference between the crank chamber (2a) and a gas suction chamber (4a) and for compressing gas supplied to compression chambers (18) from the gas suction chamber (4a) by pistons (21) that reciprocate with a stroke according to the inclined angle of the swash plate (13) in order to thereby control a volume of gas to be discharged from a gas discharge chamber (4b). A communication passage (23) connects the gas discharge chamber (4b) to the gas suction chamber (4a), and a branch passage (24) branching from the communication passage (23) is connected to the crank chamber (2a). Disposed in the communication passage (23) is a valve (25, 45) which normally blocks the communication passage (23) and opens the communication passage (23) to alter pressure in the crank chamber (2a).

Abstract: A device for elevating a pressure acting on a liquid including a liquid pressure elevating mechanism for receiving liquid under a first positive pressure and at a selected volume of liquid per unit of time flow rate from a liquid source at an inlet port and supplying the liquid under a second positive pressure substantially greater than the first pressure and at the selected volume of liquid per unit of time flow rate to an outlet port and a liquid utilizing load connected thereto. The second pressure is sufficiently high enough to cause the liquid to become substantially compressed to thereby result in the second pressure to want to vary during intervals of time that the liquid is being compressed. A control device is provided for accommodating the compressibility of the liquid so as to maintain a substantially constant second pressure.

Abstract: A compressor includes a rotary drive shaft having a first end and a second end, both the ends being rotatably supported by opposing walls of a crank chamber defined in a casing and a swash plate tiltably mounted on the drive shaft and operably coupled with a piston in a cylinder bore. A rotation of the drive shaft results in a reciprocating movement of the piston for compressing refrigerant gas in a cylinder bore. A rotary member is secured to the first end which extends outside the casing. the rotary member supplies a power to the drive shaft from a power supply. A support member, disposed between the rotary member and the first end, protrudes outward from the casing. A first bearing, disposed between the support member and the rotary member, receives a thrust load and a radial load acting on the rotary member when the rotary member rotates. A second bearing, disposed between the casing and the second end, receives the radial load acting on the rotary member when the rotary member rotates.

Abstract: A thermal shield and support structure assembly for a gas turbine engine is disclosed wherein the thermal shield can be removed while the support structure is still mounted in the engine. The thermal shield in the form of a divergent seal baseplate and the support structure is particularly useful for divergent seals and provides a removable baseplate having at least two hooks disposed on the back side of the baseplate. The hooks have axially facing openings, preferably open in the forward facing direction and are operable to engage transversely extending pins on the frame of the support structure. An axial retaining means to prevent the hooks from disengaging from the pins may also be used which, in one embodiment, provides a lug having a first aperture and extending away from the back side of the baseplate to engage a clevis having two arms having second apertures alignable with the lug's aperture and a bolt or other fastening means disposed through the apertures.

Abstract: An infusion device with a disposable administration set which is inexpensive to manufacture. In the preferred embodiment of the present invention the disposable administration set has a plurality of elongated cam followers connected to a plate assembly, wherein the cam followers are displaced in a predetermined sequence and forced against a delivery tube by cam means driven by rotary drive means. The disposable administration set is injection molded as a single integral piece. The disposable administration set includes adjustment spacers disposed between the plate assembly and the cam followers which adjust the distance between them to keep the device accurate. In the preferred embodiment of the present invention the cam means are configured to provide fluid delivery at a consistent and uniform rate.

Abstract: A two-stage positive displacement pump (1) is used in particular to operate in conjunction with a turbomolecular pump (2) that can be placed ahead of it in series. The two-stage positive displacement pump (1) is configured as a hybrid pump (3) that has on the medium-entry side a reciprocating pump (5) with a comparatively large displacement area (6), whereby its piston-cylinder space (7) is sealed off with respect to the crank area (8) by means of a sealing membrane (9). Also as a part of this two-stage positive displacement pump (1) which forms the hybrid pump (3), there is placed in series behind the reciprocating pump (5) a diaphragm pump (10), whose displacement area (11) is noticeably smaller compared to that of the reciprocating pump (5).

Abstract: A gas compressor with at least three hydraulic cylinders is connected to a source of natural gas by a gas line. The gas line can also be removably attached to a storage tank. A hydraulic system is also connected to the cylinders. The compressor additionally includes pressure controls which allow the pistons in the hydraulic cylinders to complete the compression stroke in a staged manner. The cylinders are thereby sequentially emptied of gas. Gas at a sufficient initial pressure, entering the cylinders at the completion of the compression cycle, drives the return stroke of the pistons. A pressure switch controls the pressure level of the compressed gas, and aborts the compression cycle when a predetermined pressure in the storage tank has been reached.

Abstract: A laminated identification bracelet which incorporates a window type pocket created by not adhering the pocket area of the lamina which incorporates it to the underlying lamina.