Abstract: The invention pertains to vacuum pump structure, and the innovations include a multiple pumping chamber pump wherein substantially identical pumping chambers may be assembled in contiguous relationship, and by the selective use of a pump head plate mounted upon both chambers the pump may operate in either a series or parallel mode. Further innovations include a novel air conducting nozzle which minimizes oil loss, and the pump employs a combination carrying handle and base interposed between the motor and pumping structure which facilitates assembly and handling.

Abstract: An aggregate wherein a hollow support carries a multi-stage compressor and one or two heat exchangers. The outlet of the first stage of the compressor communicates with a first chamber of the support by way of a first passage, the first chamber communicates with the inlet of the second stage of the compressor, the outlet of the second stage communicates with the inlet of the next-following stage by way of a second passage and a second chamber in the support, and the outlet of the next-following stage communicates with an outlet opening of the support. Such outlet opening can admit compressed fluid medium to an aftercooler. Each heat exchanger is connected between the outlet of one of the first and second stages and the respective passage, and the next-following stage of the compressor is disposed between the first and second stages. The outlets of the stages are directly connected with channels which are machined into the support and diverge in the direction of flow of fluid medium therethrough.

Abstract: An improved liquid ring pump includes an impeller having a prime number of radial blades, preferably thirteen, which reduce pump noise and vibration by eliminating subharmonics due to blade pairing.

Abstract: The present invention discloses an apparatus for cooling engine oil characterized in that there is provided an oil reservoir in communication with a first oil pump of an internal combustion engine. Further, an oil passage connects the pump to the oil reservoir, and the oil passage is provided with a by-pass passage in parallel with the oil passage. In the by-pass passage there is disposed an oil cooler on the upstream side and a second oil pump on the downstream side, the second pump also in communication with said oil reservoir.

Abstract: A bi-directional pump having a pump housing, an inlet communicating with one end of the housing, an outlet communicating with the other end of the housing, an impeller within the housing adjacent the inlet, a baffle plate within the housing adjacent the outlet, a shaft extending through the inlet and journaled in the baffle plate, the impeller being secured to the shaft for rotation with the shaft, the impeller having vanes extending radially from the shaft both the impeller and the baffle plate and being spaced from the interior of the housing, whereby fluid flows through the inlet, radially outwardly of the impeller, radially inwardly of the baffle plate, and through the outlet. In a specific embodiment, a pump stage can be positioned on both sides of a motor, and the motor rotor and the impeller of each pump can be secured to the same shaft for rotation, the shaft being journaled in the baffle plates of the pump stages.

Abstract: An exhaust-gas turbocharger includes a low pressure stage having a compressor wheel and a turbine wheel mounted on one shaft and a high pressure stage having a compressor wheel and a turbine wheel mounted on another shaft. The two shafts are arranged coaxially one within the other, and the compressor and turbine units of either stage can be located on the inner or outer shaft.

Abstract: A turbo-fluid device in the form of a package, in which a heat exchanger used as a cooler for a turbo-compressor, desiccator, or turbo-refrigerator; or a heater for a turbo-generator is formed in an annular form, while there are housed in the interior of the annular heat exchanger an electric motor or generator, transmission, compressor and/or turbine, oil feed device and other accessories, thereby decreasing sound level and reducing the size and the weight of the device.

Abstract: A sealing system for use in a composite multi-stage pump or pumps is disclosed which utilizes part of the liquid pressurized by the pump to moderate sealing conditions by introducing said liquid to a portion or portions around the shaft, where the sealing conditions are most critical, and by thus reducing the pressure imposed on the sealing portion make the designing of seals easy. Also, by introducing pressurized liquid of relatively low temperature to the critical portion(s), minimum flow rate is lowered and thus the operational range of the pump is extended.When two or more pumps are employed for maintaining continuous operation by alternately switching the working pumps, a flow passage is provided between the pumps so the pressurized liquid from the pump under operation can be introduced to the non-operating pump, thus utilizing the pressurized liquid to prevent liquid kept under pressure in the non-operating pump from leaking therefrom.

Abstract: An adjustable coupling for operatively connecting the shaft of a low-pressure deep well pump to the shaft of a high-pressure booster pump whereby both pumps may be driven by a common prime mover.

Abstract: According to the present invention, fluid rotary machines including a turbo-compressor, turbo-desiccator, turbo-refrigerator, turbo-generator and the like are of such an arrangement that supporting shafts corresponding to impellers in number and a gear train changing R.P.M. of said supporting shafts to the optimum R.P.M. of the impellers mounted on said supporting shafts are provided, so that the respective impellers can operate at the optimum R.P.M. individually.

Abstract: A plurality of actuator members are mounted along the surface of a roadway in the path of vehicular traffic, so as to be actuated as the wheels of vehicles pass thereover. Beneath each actuator is a chamber formed of resilient material, one of the walls of this chamber being deflected inwardly in response to an associated actuator. The chambers are filled with gas and connected to each other in series by means of a suitable valving arrangement. The gas contained within the chambers, which is preferably air, is compressed by virtue of the actuation of the chamber, gas being fed from chamber to chamber such that successively higher gas compression levels will be reached at succeeding chamber stages in the chain. To facilitate the actuation of the higher level compression stages the actuation surfaces thereof are made to have a decreased area so that greater force per unit area can be provided for a given weight vehicle.

Abstract: An aerator for a spa is made of a section of pipe mounted to a base having an axially directed output fitting. A blower oriented axially of the pipe is mounted near the base in an annular mounting and sealing ring, and one or more additional blowers may be mounted to provide a series of blower stages all axially aligned with one another along the pipe. A solid body of porous foam having a through aperture fills the pipe above the first of the blowers and a cover is detachably connected to the top of the pipe section housing.

Abstract: This disclosure pertains to tanks, operated in pairs disposed above the surface of the earth. Each is adapted with sunshading deflectors selectively operated so as to permit the air contained within one such tank to be heated and thus elevated in pressure, by the rays of the sun. A receiving tank, disposed below the surface of the earth, collects the pressurized air and enables the cooling thereof. Condensation occurs while the pressure level within the receiving tank is elevated. A plurality of such units comprising above ground pairs of tanks and below ground cooled receiving tanks are arranged in a series circuit so as to increase the available air pressure at the last receiving tank. A centralized condensate tank collects all the water condensed within each receiving tank and utilizes the elevated air pressure therewithin to discharge the water as required. The air pressure at the last receiving tank may be utilized to drive a motor which in turn can operate an electric generator.

Abstract: The output of at least the lowest-pressure turbo-compressor is connected via the intermediate cooler of the compressor group to the input of the turbo-compressor and a throttling means is placed in the conduit between the compressor output and cooler. The looping of the output to the input is effected to diminish the starting and idling power of the compressor group. Charging of the compressed air storage chamber is prevented by a check valve until the pressure of the pressure chamber is exceeded in the compressor group.

Abstract: The thermodynamic compressor has a pair of conduits, each of which is wound into a group of loops arranged to form a toroid around a rotational drive axis. Each of the loops has an outwardly-extending section, and an inwardly-extending section which is spaced from the outwardly-extending section longitudinally along the rotational axis of the shaft. Each group of loops has the same number of loops in it, and corresponding loops in each of the groups are arranged directly opposite one another and working fluid is introduced in parallel into the groups of loops so that the amount of fluid in each pair of corresponding opposed loops remains the same at all times despite compression of the working fluid in the loops. The loops are arranged with the outwardly-extending sections in one plane, and the inwardly-extending sections in another plane so that heat easily can be added from the outside to the inwardly-extending sections and can be extracted easily from the outwardly-extending sections.

Abstract: An integral vacuum pump for producing ultra-high vacuums including, in combination, axial turbomolecular, centrifugal compressor and vortex diode pumping means.

Abstract: An air compression system for use in chemical processing operation. A primary air compression system module includes, on a common shaft, a multi-stage high pressure ratio compressor for supplying compressed air for the process, a pair of bearings support the common shaft and straddle the multi-stage compressor, a steam turbine is located on one end of the common shaft for providing start-up and supplemental power to the air compression module when necessary, and a radial inflow hot gas expander is provided on the opposite end of the common shaft which receives hot gas from the process for expansion thereof to provide the main power source for the air compression module. The air compression module is characterized by high power, relatively high speed operation suitable for applications in chemical processing industries and is a skid-mounted unit for ease of installation, and minimum overall reliability maintenance.

Abstract: This invention relates to a blood pump for use in an artificial heart including an inlet pump system and an output pump system in series with each pump including branch tubes communicating with first main inlet tube, each branch tube being equipped with a flow-in side valve and a flow-out side valve with a flexible middle portion of the branch tubes which is expanded or contracted to provide a pulsatile pump with flow-out end of each branch tube connected to a second main tube with the second main tube of the inlet pump system being connected with the first main tube of the output pump and with the branch tubes of each system being ultimately expanded and contracted at different rates to provide a blood pump which achieves excellent hemodynamic effects without requiring synchronization with the rhythm of a natural heart.

Abstract: A diaphragm vacuum pump, which comprises a first and a second pressure reduction chambers respectively at the both faces of the spring loaded diaphragm piston assembly of the pump. The first and second chambers are respectively connected with a pneumatically operated device and the atmosphere and connected to each other, suction and discharge of the air in the first chamber being conducted in an opposite cycle against those in the second chamber to subsequently produce vacuum of a high degree by the reciprocation of the diaphragm piston assembly.

Abstract: A pump having centrifugal and vortex impellers mounted on a common rotor member. Impellers are mounted on opposite sides of rotor and make maximum use of rotor diameter. Fluid follows a serial path through the centrifugal and vortex impellers. The vortex impellers rotate in a vortex channel divided into one or more sections, plural sections of which may be arranged in parallel flow relation. The casing surrounding the rotor member may form the necessary inlet, outlet, and internal fluid channels for the pump.