Abstract: A brushless electric motor 26 includes a stator assembly 32 defining an interior chamber 38. The stator assembly includes a stator core 34 and windings 36. The windings and at least a portion 44 of the stator core are in open communication with the interior chamber. A rotor assembly 42 is provided in the interior chamber. An electronic control unit 60 is coupled to the stator assembly and has an upper surface 62 in communication with the interior chamber. A fluid flow path structure 64 is constructed and arranged to permit fluid to pass from an inlet in the stator assembly and enter the interior chamber so that the rotor assembly, the windings, and the portion of said stator core are submerged in the fluid for cooling the rotor assembly, the windings, and the portion of the stator core. Fluid also contacts the upper surface of the electronic control unit to cool the electronic control unit. Fluid isolating structure 74′ prevents fluid from contacting an end 81 of the windings.

Abstract: A pump for moving liquids has an elastomeric housing disposed around the pump. The housing has at least four sides which are primarily planar, whereby the pump can be supported on the bottom of one of the flat sides by orienting the pump so that one of the primarily planar sides is down. This allows the pump to remain in such chosen orientation and the elastomeric housing, which is typically rubber, will substantially prevent vibration of the pump to be transmitted to the surroundings of the pump.

Abstract: A hybrid vacuum pump comprising an ejector type compressed air-operated vacuum pump. Such pump comprises a housing having an inlet for compressed air, a second inlet connectable to the enclosure to be evacuated, and a discharge outlet. The incoming compressed air being divided into at least two parallel streams by a multiple-outlet chamber, each stream of compressed air passing through at least two nozzles arranged in series, intermediate chambers between successive nozzles of each parallel stream being provided separately for each stream. Pressure-operated valves being provided to automatically prevent flow of gas being evacuated to some of said nozzles as progress is made in producing the desired vacuum, and thus to increase air flow in the remaining nozzles for the achievement of a high vacuum. The pump being characterized by the use of a single body structure being used to support multiple nozzles having different forms.

Abstract: A gas turbine engine is provided with a translatable cowl and a cascade structure which is nested within the translatable portion of the cowl. The cascade structure comprises a pair of C ducts which are exposed upon translation of a portion of the cowl. The C ducts are capable of rotation about an axis parallel to the longitudinal axis of the engine thus allowing access to the core of the engine.

Abstract: A control circuit for vibrating compressors for converting d-c voltage into a-c voltage to supply a-c voltage to a vibrating compressor (1) comprising a MOS-FET transistor (2) for driving the vibrating compressor (1), a timer IC for generating pulses to switch the MOS-FET transistor (2), a timer forced operation circuit for forcibly reversing the output of the timer IC at a timing at which a counter-electromotive voltage generated by the vibrating compressor (1) during the OFF period of the MOS-FET transistor (2) is restored in the vicinity of 0 volts, a driver for driving the MOS-FET transistor (2) based on the output of the timer IC, and a pulse width changing circuit (9) for detecting an input voltage input into the vibrating compressor (1) and lowering the input voltage to the vibrating compressor (1) by changing the pulse width of output pulses of the timer IC when the input voltage is higher than a predetermined voltage.

Abstract: A reciprocating pump having an active feedback system is provided. The reciprocating pump includes a reciprocating pump having a pump chamber with a rod reciprocally movable along a longitudinal axis of the pump chamber, with the rod including a ferromagnetic material. An induction coil disposed around the rod wherein relative axial movement between the inductance coil and the ferromagnetic material of the rod varies the inductance of the induction coil. Also provided is a reciprocating pump having an active feedback system in which the rod has an electrically conductive, diametrically tapered portion. A linear displacement sensor is disposed next to the tapered portion which induces a current in the tapered portion and generates an output voltage proportional to a relative position between the linear displacement sensor and the tapered portion.

Abstract: A double diaphragm pump driven by alternating charges of air includes air chambers and pump chambers to form pump cavities. Diaphragms extend across the pump cavities and are held by their periphery between the mating pump chambers and air chambers. Elbows are coupled with the pump chambers at the inlets and outlets thereof with each of the elbows being identical and including a valve cavity to receive a ball valve. Each ball valve includes a seat with a threaded portion accommodated in either the elbow when the elbow is used at the inlet or the pump chamber at the outlet. The ball valves further include a ball and a ball cage. The components are sized to insure that when the ball is fully unseated, the minimum cross-sectional flow area is at the pump outlet. Sealing surfaces are associated with the valve seat and the associated structure to receive a compressible seal. Annular bolting flanges allow components to be reoriented for particular applications.

Abstract: A fan assembly adapted to be installed into a standard expansion slot of a microcomputer. The assembly comprises a frame, sized to fit into the standard expansion slot, including attachment members adapted to permit attachment of the frame into a standard expansion slot and defining an air passageway through the frame, the air passageway having a first opening coincident to the attachment members and having a second opening positioned away from the attachment members. Additionally, an electric fan is mounted in the frame and positioned to move air through the air passageway from the first opening through the second opening. Finally, an electrical conductor and connector assembly is adapted to be connected to a source of electrical power and to transmit electrical power from the source of electrical power to the electric fan.

Abstract: Turbochargers experience tensile loads due their high rotational speeds. These tensile loads tend to expand surface defects present about a bore portion of a compressor wheel. Expansion of these surface defects may ultimately result in failure of the compressor wheel. Removing these surface defects or imparting residual compressive stresses on the bore portion reduces failure of the compressor wheel caused by tensile loading.

Abstract: A fuel/mixer injection system for a combustor of a gas turbine engine comprising two major assemblies including a burner-mounted swirler with two outer air passages surrounding a central passage and a piloted air fuel nozzle containing a main fuel injection orifice and a pilot fuel injection orifice the main fuel mixes with swirling air in the central passage and the pilot fuel mixes with the swirling air in the outer air passage. In another embodiment, the piloted fuel nozzle contains an airblast-atomized main fuel injector annulus and a concentric ring with a plurality of circumferentially spaced holes feeds air to the main fuel injector annulus.

Abstract: An implantable rotary blood pump including a rotor mounted for rotation within a pump housing. The rotor has a shaft portion and an impeller carried by the shaft portion. A rotor motor is provided, with a motor including a plurality of permanent magnets carried by the impeller and motor stators on opposite sides of the impeller. Structural members are provided between the impeller and stators to provide structural support and hermetical sealing. The structural members comprise biocompatible, corrosion resistant, electrically non-conducting ceramic material, which alleviate eddy current losses.

Abstract: A section arrangement for a reciprocating hermetic compressor, includes a hermetic shell (21), a suction inlet tube (28) for gas admission and a suction orifice (24a) at the head of a cylinder (22) disposed inside the shell (21) and which is in fluid communication with the suction inlet tube (28). A suction duct (60) has a first end (61) and a second end (62), which are hermetically coupled to the suction inlet tube (28) and suction orifice (24a), respectively, in order to conduct low pressure gas from the suction inlet tube (28) directly to the suction orifice (24a) and to provide thermal and acoustic insulation to the gas flow being drawn. At least one pressure equalizing element (70) provides a predetermined fluid communication of the gas being drawn between the suction inlet tube (28) and the suction orifice (24a) into the shell (21) and maintains the thermal and acoustic insulating characteristics of the suction duct (60) substantially unaltered.

Abstract: An automatic shut-down system for wet/dry glycol pump thereby providing a pump protection system located in the fluid circuit between the reboiler and glycol contactor elements of a gas dehydration system. The system includes a filter or filter system, if one is not already provided within the existing dehydration system, a vertical tank having an external gas operated float valve with controls for remotely pilot operating a cut-off valve located in the wet glycol line between the contactor and the glycol pump. Therefore, in operation, when the dry glycol level in the vertical tanks drops below a set level, the float valve blocks gas pressure applied to the cut-off valve maintaining it in the open condition, thus allowing it to close and thereby blocking the flow of wet glycol to the pump, thus effectively shutting down the pump and the system. Once the imbalance is corrected, the system automatically resumes operation.

Abstract: A fuel injection pump for internal combustion engines, is proposed, with a distributor pump piston (6), which is supported in a housing bore (5) and on its jacket face, has a distributor groove (12), a filling groove (18), which is connected to a pressure relief chamber, and a pressure compensation surface (36). This filling groove constitutes a first leakage route (39) in the direction of the distributor groove (12) and constitutes a second leakage route (42) in the direction of an annular groove (20) in such a way that the pressure compensation surface, which is otherwise always closed by the inner wall of the bore (5), produces a high-pressure fuel supply by way of the first leakage route (39) in the direction of the pressure compensation surface (36) and this pressure compensation surface (36) is in turn relieved by way of the second leakage route (42) in the direction of the annular groove (20).

Abstract: A submersible sump pump connected to a discharge pipe is disclosed. The sump pump includes a pedestal mounted above a sump. The pedestal includes a power cord, an indicator, and a high water alarm. The sump pump further includes a float switch connected to a styrofoam float which detects movement of the drainage level beyond a first predetermined point, a second predetermined point, and a third predetermined point.

Abstract: A pump drive assembly is disclosed. The assembly includes a driver, a pump drive member driven by the driver, and a decoupler that decouples the drive member from the driver when a force acting upon the drive member exceeds a threshold force. The pump drive member can be a piston rod, and the decoupler can be a magnet attached to the piston rod and coupled to a magnetically attracted plate driven by the driver. When a force resisting movement of the piston rod exceeds the magnetic force coupling the magnet to the plate, the magnet decouples from the plate, and the pumping operation ceases.

Abstract: A double-wrap dry scroll vacuum pump for use as a vacuum pump for nuclear power equipment. The pump has a pump body including a suction port capable of being communicated with a vessel to be evacuated and a discharge port for discharging wrap compressed gas to an outside of the pump body after an operation of gas compression by the progressive volume reduction of a sealed space, formed by a revolving scroll and a pair of stationary scrolls. The pump further includes a pair of enclosing members which cover opposite end portions of a drive shaft and are mounted in a gas-tight state around the revolving scroll. The pump has compressed gas feed ports for feeding compressed gas therethrough to the enclosing members, the compressed gas having a higher pressure than the wrap compressed gas and is discharged together with the wrap compressed gas through the discharge port.

Abstract: A well and method for using the well for removing lighter than water pollutants (e.g. hydrocarbons and other organics) from a water table. The well includes a pneumatic pump having an air exhaust port to which a vacuum hose is attached for applying a vacuum to the pump chamber to enable fluids to be drawn into the pump chamber without regard to the hydrostatic head and at a rate sufficient to provide a drawdown of the water table to enable capture of organic compounds present as a floating layer on the water table.

Abstract: A venturi type pumping device including a body having a tubular through bore between a bore inlet end and a bore outlet end, a restriction in the bore acting to produce a reduction in pressure downstream from the restriction, a delivery device for the delivery from a delivery outlet of a pressurized stream of liquid substantially axially aligned with the bore and upstream from the bore inlet end, a bore extension member which terminates upstream from and encloses the delivery outlet, and a mounting device provided on the body for sealing engagement of the bore extension member to the body.

Abstract: An air compressor includes a piston slidably received in a housing. A tube and a pipe are extended from the housing for coupling to a pressure gage and a nozzle. A passage is formed between the housing and the tube. A check valve is received in the tube. A piston is slidably received in the housing. A base is secured to the housing for supporting a motor. A gear and a weight are rotatably secured to the base. The weight has an eccentric pin coupled to the piston. The motor is coupled to the gear for moving the piston up and down along the housing in a reciprocating action.