Patents in subclass Pumps/By Controlling Motive Fluid
Parent class: Pumps
| Number | Patent title | Issue Date |
|---|---|---|
| 07140389 | 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 (2).... |
11/28/2006 |
| 06955526 | 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... |
10/18/2005 |
| 06904769 | 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... |
06/14/2005 |
| 06899198 | 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... |
05/31/2005 |
| 06851936 | 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... |
02/08/2005 |
| 06786228 | 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... |
09/07/2004 |
| 06779985 | 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... |
08/24/2004 |
| 06736603 | 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... |
05/18/2004 |
| 06729851 | 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... |
05/04/2004 |
| 06719536 | 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... |
04/13/2004 |
| 06701715 | 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... |
03/09/2004 |
| 06572339 | 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... |
06/03/2003 |
| 06423218 | 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... |
07/23/2002 |
| 06416295 | 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... |
07/09/2002 |
| 06397876 | 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... |
06/04/2002 |
| 06397885 | 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... |
06/04/2002 |
| 06322327 | 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... |
11/27/2001 |
| 06244826 | 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... |
06/12/2001 |
| 06182702 | 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... |
02/06/2001 |
| 06171069 | 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... |
01/09/2001 |
| 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... |
12/05/2000 |
| 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.... |
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... |
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,... |
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... |
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... |
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... |
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... |
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... |
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... |
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... |
02/11/1997 |