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| Number | Title | Issue Date |
| 7591636 | Negative pressure supply apparatus When coils of a vacuum pump unit are excited by energization, a piston equipped with magnets reciprocates in a cylinder. Thus, air is sucked in from an outlet passage of a diffuser of an ejector, and air discharged from the vacuum pump unit is supplied to an inlet o... | 09/22/2009 |
| 7156377 | Water aeration device and method A liquid feed line includes a stepped internal nozzle and an exit diameter smaller than the diameter of the liquid feed line. The stepped internal nozzle desirably introduces hydrodynamics or hydraulic waves for the fluid, with the number of steps selected based on ... | 01/02/2007 |
| 7056103 | Method and apparatus for cooling turbomachinery components An apparatus and method for cooling components associated with turbomachinery by means of one or more venturis placed in the intake flow of air into the compressor with an air inlet upstream of the venturis and an air outlet integral to at least one venturi. The par... | 06/06/2006 |
| 6994527 | Process and a device for transport of gas The present invention provides a process and a device for transport of gas in a main duct with more than two branch ducts wherein the gas is guided through the branch ducts (1, 2, 3, 4, 5, 6, 7, 8) and into the main duct (A) with a direction which is parallel... | 02/07/2006 |
| 6955526 | Vacuum generator with flow switching means for varying suction capacity through a plurality of nozzles The vacuum generator is capable of quickly and securely holding and releasing a work piece and capable of reducing amount of consuming compressed air. In the vacuum generator, a first nozzle and a second nozzle jet compressed air toward a diffuser nozzle. The second... | 10/18/2005 |
| 6938841 | Pressure compensating orifice for control of nitrous oxide delivery This invention is a variable orifice for controlling the mass flow rate of nitrous oxide used as an engine oxidizer, this orifice having an effective size, or area, which changes with changes in the nitrous oxide pressure applied to it. Several design parameters can... | 09/06/2005 |
| 6817837 | Jet pump with recirculating motive fluid A recirculating liquid jet pump for moving a wide variety of materials is described. The pump is preferably equipped with an intermediate collection reservoir enabling the placement of material to be suctioned into the collection reservoir without bringing together ... | 11/16/2004 |
| 6685439 | Hydraulic jet pump A hydraulic jet pump comprising: a nozzle housing; a nozzle member disposed within said nozzle housing and including an inlet aperture communicating through a jet nozzle with a mixing chamber along a power fluid inlet flow path; a deflector member includi... | 02/03/2004 |
| 6471489 | Supersonic 4-way self-compensating fluid entrainment device A self-compensating, energy saving heat transfer unit to provide an efficient means to transfer energy from steam to water in a central heating system. The steam enters a mixing chamber and creates a negative pressure environment. Water in a backwater pip... | 10/29/2002 |
| 6450775 | Jet pumps and methods employing the same A liquid jet pump for moving a wide variety of material is described. The liquid jet pump is comprised of a nozzle assembly and a target tube, and defines a suction chamber. The nozzle assembly is configured to pull in gas, causing a gas bearing effect wh... | 09/17/2002 |
| 6394760 | Vacuum ejector pump An ejector includes two or more nozzles arranged in series. A stream of air fed at high velocity through the nozzle is used to create a negative pressure in an outer, surrounding space. The surrounding space is in flow communication with at least one slot... | 05/28/2002 |
| 6171068 | Vacuum pump 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 compre... | 01/09/2001 |
| 6162021 | System for pumping liquids using a jet pump and a phase separator A device for co-mingling fluids from separate sources comprises a jet pump having high and low pressure fluid inlets, and a main outlet for discharging a mixture of the two fluids. A phase separator, receiving fluid from another source of fluid, has a flu... | 12/19/2000 |
| 5993167 | Apparatus and method for energy conversion of pressurized fluid A method of and apparatus for momentum exchange of a pressurized fluid including a jet nozzle for discharging a jet of pressurized fluid produced by a pressure pump, a first inlet opening provided downstream of the jet nozzle, an air layer generating pipe... | 11/30/1999 |
| 5931643 | Fluid jet ejector with primary fluid recirculation means A fluid jet ejector and ejection method wherein a plurality of high velocity jet streams of a primary fluid are discharged through a vacuum chamber into a convergent-divergent diffuser or nozzle to draw a secondary fluid into the chamber in such manner th... | 08/03/1999 |
| 5810563 | Ejector pump having flow directing profiles An ejector pump for the transport of materials or mixtures of materials capable of flowing with the aid of a fluid driving medium is provided. The ejector pump includes at least one flow management profile which is placed in the flow channel of the ejecto... | 09/22/1998 |
| 5683227 | Multistage ejector assembly A multistage ejector assembly which can be assembled in an extremely facilitated manner, at a low cost, and while avoiding from high precision assembling work for a plural number of nozzles and diffusers. The multistage ejector assmbly includes a casing b... | 11/04/1997 |
| 5593284 | Ejector pump having turbulence reducing flow directing profiles An ejector pump for the transport of materials or mixtures of materials capable of flowing with the aid of a fluid driving medium is provided. The ejector pump includes at least one flow management profile which is placed in the flow channel of the ejecto... | 01/14/1997 |
| 5584668 | Multistage ejector pump for radial flow A multi-stage ejector pump for suction or for moving materials with the help of a working fluid within one housing is provided. The pump is designed for radial flow and includes at least one inlet for the working fluid, at least one inlet for the material... | 12/17/1996 |
| 5478209 | Jet barrel and hose fitting insert for a jet pump A jet barrel and hose fitting insert are provided for a jet pump that supplies coating powder to a spray gun. The insert reduces the likelihood of impact fusion in the barrel and fitting. The insert comprises a cylindrical portion of small outside diamete... | 12/26/1995 |
| 5417550 | Submersed jet pump for generating a stream of water An apparatus for generating a stream in a body of water has at least one cylinder installed under water, and a water-jet pump housed in the cylinder. The pump draws water in through one end of the cylinder and produces a stream of water accelerated by a d... | 05/23/1995 |
| 5309736 | Hydrocarbon fluid, ejector refrigeration system A refrigeration system particularly suitable for an automobile air conditioning system is disclosed. The system includes an ejector to raise the pressure of the working fluid to the condenser pressure and a boiler which utilizes waste heat from the automo... | 05/10/1994 |
| 5239837 | Hydrocarbon fluid, ejector refrigeration system A refrigeration system particularly suitable for an automobile air conditioning system is disclosed. The system includes an ejector to raise the pressure of the working fluid to the condenser pressure and a boiler which utilizes waste heat from the automo... | 08/31/1993 |
| 5228839 | Multistage ejector pump An ejector pump having a plurality of longitudinally aligned chambers, each chamber including a pair of opposed end walls, at least two of the end walls having a nozzle and a one-way valve, with a connection to compressed gas to the most upstream of the n... | 07/20/1993 |
| 4960364 | Vacuum ejector device The present invention relates summarily to a mult-ejector device with at least one ejector part (2) including at least one array of ejector jets (18, 19, 20) placed one after the other in the ejector part (2). Under the action of compressed air flowing th... | 10/02/1990 |
| 4938665 | Jet pump A jet pump for the suction and/or conveyance of flowable materials or mixtures of materials by means of a liquid or gaseous propellant medium consists of a housing with inlets (28, 64) as well as a common outlet or discharge (30). A flow passage (44) in t... | 07/03/1990 |
| 4880358 | Ultra-high vacuum force, low air consumption pumps Air-operated vacuum pump assemblies are disclosed which provide a maximum vacuum force and a large vacuum flow per volume of air consumption. The present venturi pump assemblies comprise one or more solid ejector housings each having a single longitudinal... | 11/14/1989 |
| 4850752 | Tool for stone-blowing There is provided a tool for stone-blowing comprising upper and lower mating parts (13, 14), the upper part being tubular and the lower part being mainly of channel section and having its lower end closed off by a transverse wall. The wall is shaped inter... | 07/25/1989 |
| 4807814 | Pneumatic powder ejector The invention is in a pneumatic powder ejector comprising a suction stage and an injection stage. The suction stage includes a suction chamber (16), a venturi (14) communicating a primary gas to the suction chamber and a lateral suction input (18) offset ... | 02/28/1989 |
| 4781537 | Variable flow rate system for hydrokinetic amplifier A hydrokinetic amplifier 10 having a primary liquid input formed into a primary liquid jet surrounded by a motivating vapor that transfers vapor momentum to the primary liquid jet and accelerates the primary liquid jet through a minimum cross-sectional ar... | 11/01/1988 |
| 4759691 | Compressed air driven vacuum pump assembly Compressed air driven vacuum pump assembly wherein the energy contained in compressed air is used to create a vacuum flow within a housing unit. Preferably, the modular housing unit includes a series of axially aligned air nozzles to provide a substantial... | 07/26/1988 |
| 4748826 | Refrigerating or heat pump and jet pump for use therein A refrigerator or heat pump with a jet pump (1) as the compressor, in which the evaporator (2) of the heat-pump or refrigerator circuit is incorporated in the jet pump (1). In the simplest case, this is achieved by the presence, in the inlet line, of a pa... | 06/07/1988 |
| 4725201 | Automatic starting system for hydrokinetic amplifier Automatic starting of a hydrokinetic amplifier 10 is accomplished by: an overflow pilot valve 32 responsive to output pressure for opening an overflow line 30 when output pressure drops below a predetermined level; and a start-up pilot valve 36 responsive... | 02/16/1988 |
| 4718835 | Mining apparatus and jet pump therefor This disclosure relates to deep sea mining apparatus, comprising a relatively straight lift pipe, the lift pipe being adapted to extend substantially vertically from the floor of a body of water upwardly to a ship on the surface of the water. A plurality ... | 01/12/1988 |
| 4696625 | Ejector and method of fabrication An ejector device consists of a number of ejector units each of which includes a suction chamber. The individual units are positioned in a common housing. For making the ejector the housing is produced and the suction chambers are produced therein. These ... | 09/29/1987 |
| 4673335 | Gas compression with hydrokinetic amplifier A hydrokinetic amplifier 10 that combines a liquid and vapor to produce an amplified liquid output pressure is used for compressing or liquifying gas by admitting gas to be compressed into a region where the liquid and vapor are in contact and the vapor i... | 06/16/1987 |
| 4634560 | Aspirator pump and metering device An apparatus is disclosed for controlling flow rates of a primary fluid including aspirating, mixing, and metering the primary fluid with a secondary fluid. In one aspect, the invention includes means for passing a secondary fluid of diluent gas through a... | 01/06/1987 |
| 4566862 | Fluid apparatus and methods, as for inflating inflatable structures In a system for inflating airslides and the like, the pressure of the primary gas supplied to an ejector is controlled so as to maintain a constant mass flow rate into the airslide over its inflation cycle. A controller for controlling the primary gas pre... | 01/28/1986 |
| 4565499 | Ejector An ejector device having large evacuation capacity comprises a cylindrical body the cylinder face of which is subdivided into ring shaped chambers which extend around and are partitioned off from an empty space at the center of the cylinder. The said cham... | 01/21/1986 |
| 4551042 | Transfer system for fish and similar articles Pumping efficiency for fish and other articles has been achieved far beyond expectations. By extracting water and adding air at a location in the pumping system higher than the initial air injection point, thereby excluding a certain percentage of the wat... | 11/05/1985 |
