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7637548 |
Vacuum suction apparatus having negative pressure actuated vacuum generator switching mechanism
A switching valve is disposed between a pressure fluid supply source and an ejector in a vacuum suction apparatus. A supply port of the switching valve is connected to the pressure fluid supply...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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5205717 |
Ejector array and a method of achieving it
Method of achieving with at least two compressed air operated ejectors a desired subpressure in the shortest possible time and with the least use of energy, this method including connection of the...
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5201560 |
Vacuum cup control apparatus
A vacuum cup control apparatus for applying and releasing vacuum in a vacuum cup includes a venturi passage for inducing a vacuum within the vacuum cup upon the flow of pressurized air...
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5033500 |
Freeze valve apparatus
A freeze resisting valve apparatus, for controlling water flow, the combination comprising: a vertically elongated, hollow valve body having a lower portion adapted for installation underground,...
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4950016 |
Integrated pneumatic valve/sensor assembly for vacuum supply apparatus
A pneumatic vacuum gripping assembly for attachment to a suction gripper device is coupled by way of a fluid flow link to a venturi for controlling the vacuum of the suction gripper device...
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4865521 |
Vacuum breaking device for ejector pump
A vacuum breaking device for an ejector pump is provided. The vacuum breaking device according to the present invention features that it is provided with a movable sealing valve for blocking the...
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4846617 |
Jet pump, in particular for hot-water heating systems with return-flow mixing
A jet pump, in particular for hot-water heating systems or water-heating systems with return-flow mixing has a feeder head which is connected with a housing containing the receptor nozzle 13. The...
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4838953 |
Adjustable oil ejector
An oil ejector for conveying a quantity of oil under pressure to a region to be lubricated, the including a nozzle member (4,18) having an inlet end for receiving a supply of oil under pressure and...
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4828306 |
Vacuum cup control system
A control system for applying and releasing vacuum in a work-gripping vacuum cup includes a housing having a venturi passage for inducing a vacuum within the cup upon the flow of air through the...
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4810170 |
Jet pump
A jet pump has a chamber with a jet nozzle at the inlet port and a diffuser fitted into the outlet port with a suction port fitted in the chamber. A ball valve having a passage therethrough is...
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4800046 |
Water jet aerator with diverter valve
A water jet aerator in combination with a diverter valve including an aerator housing, a valve body that is rotatably positioned within the aerator housing, and a swivel nozzle. The aerator housing...
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4773827 |
Liquid heating apparatus with temperature control system
A liquid heating apparatus capable of using low pressure steam and having a temperature control system to automatically control the output temperature of a heated liquid. The apparatus includes a...
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4735554 |
Self-regulating deicer valve
A self-regulating vacuum control valve with a needle valve operating in a narrow central bore that regulates the flow of pressurized air from a pressure source into such narrow central bore for...
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4725203 |
Liquid-gas ejector device and method used to produce a diphasic flow
A method for producing a flow of fluid comprised of at least phases from at least two primary flowing fluids, one of which has at least one liquid phase, and the other at least one gaseous phase,...
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4701108 |
Variable volume ejector with motive fluid pulser
A method and apparatus for ejecting fluids through use of a high pressure liquid motive fluid by forming hydraulic slugs from said motive fluid and conducting it through conventional ejection...
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4687021 |
Vacuum valve-sensor device
A vacuum valve-sensor device mounted on a vacuum source and maintaining the vacuum generated by the vacuum source to a required level. It includes a one-way valve which allows gas to flow towards...
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