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| Number | Title | Issue Date |
| 8043071 | Vacuum generating unit An ejector functioning as a vacuum generating mechanism is disposed in a main body constituting a vacuum generating unit, and an atmospheric air introducing valve is disposed between the ejector and a vacuum port. The atmospheric air introducing valve is brought int... | 10/25/2011 |
| 7438535 | Structure of ejector pump An ejector pump is provided which works to use dynamic energy of a jet of a main fluid emitted from a nozzle to suck a sub-fluid therein. When it is required to stop the ejector pump, the needle is moved to bring a sealing surface formed on a head thereof into abutm... | 10/21/2008 |
| 7310965 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 12/25/2007 |
| 7267382 | Low maintenance vacuum generation The present invention features a system to generate vacuum for picking up and holding a component in a component placement machine wherein the arrangement of the elements comprising the system prevents the flow of foreign matter back through the system. One arrangem... | 09/11/2007 |
| 7140389 | Vacuum producing device A vacuum producing device (1) possessing a principal suction nozzle unit (2) with a shut off valve (27) on the upstream side thereof and an additional suction nozzle unit (3) connected in parallel to the principal suction nozzle unit (... | 11/28/2006 |
| 7108193 | Integration of a thermostat in the recycling system of the vehicular exhaust gas recirculation (EGR) system The invention relates to the control of the temperature of recirculated exhaust gas and oil, by means of the placement of a thermostat between an oil/water heat exchanger and a water/exhaust gas exchanger. The thermostat comprises a multifaceted casing (1), i... | 09/19/2006 |
| 7036656 | Vacuum belt conveyor for plates A conveyor 1 for holding glass plates 2 in position during grinding and drilling operations comprising one or more than one belt 3, 3′ 3″ having a rotating surface and a suction generator 6 for generating a vacuum on the surface. ... | 05/02/2006 |
| 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 |
| 6904769 | Ejector-type depressurizer for vapor compression refrigeration system In an ejector-type depressurizer, a nozzle arrangement converts pressure energy of refrigerant supplied from a radiator into velocity energy to depressurize and expand the refrigerant, and a pressurizer arrangement mixes the refrigerant discharged from the nozzle ar... | 06/14/2005 |
| 6899198 | Compressed air muffler A compressed air muffler comprises a rear attachment section, a compressed air muffler section adjoining it in the longitudinal direction with a compressed air muffler body of a porous compressed air muffler material and an outlet duct extending in the length direct... | 05/31/2005 |
| 6851936 | Vacuum producing device A vacuum producing device having an ejector means with a jet nozzle and a receiving nozzle downstream from it. At the outlet end of the receiving nozzle there is a receiving space for the fluid flowing through the receiving nozzle and an exit flow duct extends from ... | 02/08/2005 |
| 6786228 | Air circuit with air economizing and memory The invention is summarized as a method and apparatus for providing a memory function for an air economizing fluid pressure circuit. A latchable or detented valve is used to control an air circuit that defaults to permit the generation of vacuum pressure, but is als... | 09/07/2004 |
| 6779985 | Vacuum generating device A vacuum generating device designed to generate negative pressure in an absorption means, such as an absorption pad, of a vacuum system, is disclosed. The vacuum generating device accomplishes the recent trend of compactness and smallness of such devices, effectivel... | 08/24/2004 |
| 6736603 | Oil suction pump An oil suction pump includes a push switch, a shaft vertically located below the push switch, and a float arm horizontally located below the shaft. A hooked lower end of the shaft is adapted to detachably engage with a hooked first end of the float arm and thereby h... | 05/18/2004 |
| 6729851 | Vacuum generating device A vacuum generating device, fabricated in the form of an ejector pump stack and used for generating negative pressure in an absorption unit, such as an absorption pad of a vacuum feeding system, is disclosed. The vacuum generating device includes a plurality of ejec... | 05/04/2004 |
| 6719536 | Vacuum generator with power failure operation mode Vacuum generator comprising an ejector nozzle which is connected to a compressed-air supply via a compressed-air line, and with a first valve for opening and closing the compressed-air line, wherein a second electrical valve is connected to the suction line of the e... | 04/13/2004 |
| 6701715 | Variable geometry ejector for a bleed air system using integral ejector exit pressure feedback A system and method of using a variable geometry ejector for a bleed air system using integral bleed pressure feedback which utilizes a minimal amount of high-pressure air, thus improving the overall engine cycle performance and is easily adaptable to a m... | 03/09/2004 |
| 6572339 | Positive displacement fluid pump having improved fill characteristics A pump assembly is provided that includes a gerotor pump and a manifold. An aspirating member is positioned between a pump inlet cavity in the manifold and a fluid reservoir. Fluid flow generated by operation of the pump is diverted by a flow control valv... | 06/03/2003 |
| 6423218 | Pond insert with pump A pond insert more particularly intended for insertion in a garden pond is described and which has at least one electromotively driven pump (2) The pump has an inlet connection and two intercommunicating outlet connections (5, 6), whereof one is preferabl... | 07/23/2002 |
| 6416295 | Vacuum-generating unit A first passage communicating with a compressed air supply port, a sixth passage communicating with a vacuum port, and an eighth passage communicating with an air discharge port for a solenoid-operated valve are arranged in parallel respectively. Further,... | 07/09/2002 |
| 6397876 | Method for maintaining the operating condition of a vacuum responsive device during loss and resumption of power A method for generating and controlling the source of vacuum produced from a source of pressurized air in communication with at least one vacuum responsive device wherein the present invention maintains the operating conditions of the system during the lo... | 06/04/2002 |
| 6397885 | Vacuum control apparatus for maintaining the operating condition of a vacuum responsive device during loss and resumption of power A vacuum control apparatus for generating and controlling the source of vacuum produced from a source of pressurized air in communication with at least one vacuum responsive device wherein the vacuum control apparatus maintains the operating conditions of... | 06/04/2002 |
| 6322327 | Jet pump for transfer of material An improved liquid jet pump for moving solid or other materials is provided. The liquid jet pump includes a nozzle assembly, a suction chamber, and a target tube. The nozzle assembly pulls in atmospheric air, causing an air bearing effect around the liqui... | 11/27/2001 |
| 6244826 | Gaseous piston method for suction and compression in closed chamber gas equipments A method for conducting suction and compression operation on a gaseous medium of thermodynamic process in the closed chamber of a closed chamber gas equipment said suction operation intended to bring the gaseous medium in to the closed chamber and said co... | 06/12/2001 |
| 6182702 | Device for generating an underpressure An ejector unit (1) is mounted on a conventional valve manifold (10) with a manifold pressurised air supply connected to an ejector (4) through channels (15, 16) and a first pilot valve (3). A suction channel (20) and a return air channel (22) are connect... | 02/06/2001 |
| 6171069 | Jet pump having a movable piston A refrigeration unit having a jet pump with an automatically adjustable cross-section for the control of refrigerant flow that provides a more economical refrigeration process. The circulation of thermotransfering materials, such as a refrigerant, through... | 01/09/2001 |
| 6155796 | Ejector for generating negative pressure The present invention relates to an ejector for generating negative pressure having a pressure connection discharging into a propellant nozzle, and having a suction connection which discharges via a suction conduit into a receiver nozzle. The propellant n... | 12/05/2000 |
| 6155752 | Powder spray coating equipment The invention concerns powder spray coating equipment comprising an air divider (16) to adjustably divide a total-air flow (6, 14) into a conveying-air flow (54, 57, 70) and a supplemental-air flow (56, 84, 86) in such manner that, when adjusting for a la... | 12/05/2000 |
| 6086333 | Process and device for quickly reducing pressure in an installation, in particular a hydrogen-cooled generator A method and device for quick pressure relief in a hydrogen-cooled generator system. The hydrogen-cooled generator system at least includes a first and second housing part and a hydrogen seal that separates the first housing part from the interior of the ... | 07/11/2000 |
| 6071084 | Aspirator An aspirator for inflating inflatable devices such as aircraft emergency evacuation slides and life rafts using a quantity of primary gas that is stored in a tank that within the aspirator entrains a secondary gas, typically outside air, as the primary ga... | 06/06/2000 |
| 5887623 | Fluid pressure apparatus A fluid pressure apparatus of this invention provides advanced control without imposing an excessive burden on a sequencer. When a plurality of fluid pressure apparatuses are connected to one another by manifolds, the individual fluid pressure apparatuses... | 03/30/1999 |
| 5820353 | Apparatus and process for operating jet pump from which a driving medium exits at supersonic speed A process for operating a jet pump with a driving nozzle from which a driving medium, especially steam, exits at supersonic speed, this driving medium mixing with a gaseous load medium. According to the invention, downstream of the outlet of the nozzle in... | 10/13/1998 |
| 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 |
| 5624239 | Portable pneumatic vacuum source apparatus and method A portable pneumatic vacuum source includes a source of pressurized fluid and a vacuum pump in fluid connection with the pressurized fluid source, the vacuum pump operative to generate a vacuum in response to pressurized fluid flow therethrough. A nozzle ... | 04/29/1997 |
| 5613835 | Flow control apparatus for a water powered sump pump A water powered sump pump has a flow control apparatus connected to a source of water under pressure and to a suction generator. Water from the flow control apparatus flows through a nozzle in the suction generator, creates a pressure drop, suck water in ... | 03/25/1997 |
| 5613245 | Method and apparatus for injecting wastes into a molten bath with an ejector The present invention relates to a method and an apparatus for injecting a particulate solid into a molten bath. The method includes forming a liquid stream and directing a first portion of the stream through an ejector for subsequent injection into a mol... | 03/18/1997 |
| 5601415 | Fluid pressure device A fluid pressure device having a fluid unit suitable for use as a vacuum generating unit formed by connecting together a plurality of blocks having different functions, the fluid unit being connected to an external device. The fluid pressure device includ... | 02/11/1997 |
| 5360144 | Dispensing means for simultaneously dispensing two liquids Dispenser for dispensing simultaneously two liquids held in respective flexible containers, one within the other. Concentric tubular passages are provided for flows of the liquids from their containers when pressure is applied to the outer container. The ... | 11/01/1994 |
| 5277468 | Vacuum control apparatus A vacuum control apparatus is positioned remote from the vacuum operated work holding devices themselves, thereby allowing for a remote control system over a plurality of vacuum operated work holding devices. The apparatus also provides the ability to inc... | 01/11/1994 |
| 5246028 | Sanitary yard hydrant A freeze and contamination resistant hydrant, for controlling fluid flow includes: a vertically elongated conduit having a lower portion adapted for installation underground, the conduit having a lower fluid inlet associated with that lower portion, and a... | 09/21/1993 |
