Regulation Patents (Class 417/182)
  • Patent number: 9622504
    Abstract: A variable pressure device to solubilize carbon dioxide (CO2) in a beverage includes: a carbonation tank, a CO2 inlet valve and a venting valve attached to the tank's top part; a discharge valve attached to the tank's bottom part; a booster pump arranged immediately after the discharge valve; a recycling valve arranged immediately after the booster pump, which is connected to a recycling inlet at the top part of the tank; an outlet between the pump and the recycling valve; a level sensor arranged on the lid of the tank; a CO2 diversion valve attached to a tank side near its top part; a modulating valve arranged after the CO2 diversion valve; a Venturi attached immediately after the modulating valve; a control point arranged between the modulating valve and the Venturi; and a beverage inlet valve into the tank attached immediately after the Venturi, which is formed by a pipeline.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: April 18, 2017
    Assignee: CYLZER S.A.
    Inventor: Oscar Lavaque
  • Patent number: 9193437
    Abstract: An unmanned air system and method with blown flaps are presented. Air is guided to a fuel cell carried by the unmanned air system. The fuel cell is ventilated by the guided air such that the air is heated by the fuel cell to provide heated air. The heated air is routed from the fuel cell to one or more high lift devices on a lift device of the unmanned air system to provide routed air. The routed air is blown across the high lift devices.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: November 24, 2015
    Assignee: The Boeing Company
    Inventor: Alfredo Criado
  • Patent number: 8662861
    Abstract: An ejector device adapted to generate a negative pressure with compressed air, which via a compressed-air duct is fed to an ejector, the device including a valve member arranged in the compressed-air duct and controllable in order to, in the open position, allow flow of compressed air to the ejector, an air suction duct arranged between the ejector and a gripping member driven by negative pressure, and a vent valve fluidly arranged with the air suction duct and that, in an open position, places the gripping member in communication with the atmosphere. The valve member embraces: a primary valve arranged in the direction of flow of compressed air; a secondary valve arranged downstream of the primary valve; a flow section of compressed-air duct between the primary and secondary valve, the vent valve communicating with the flow section so that, in the open position of the primary valve, is continuously being subjected to a closing air pressure, independently of the open or closed position of the secondary valve.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: March 4, 2014
    Assignee: Xerex AB
    Inventor: Peter Tell
  • Publication number: 20140003965
    Abstract: A downhole jet pump 10 includes an exterior pump housing 12, the jet nozzle 30, and a carrier 40. A diffuser 46 is provided downstream from a mixing tube 32, and preferably forms a unitary body sealed to the pump housing. An inlet valve 100 passes formation fluid to the pump housing.
    Type: Application
    Filed: June 28, 2012
    Publication date: January 2, 2014
    Inventor: Matthew A. James
  • Patent number: 8322996
    Abstract: Aspirators for inflating devices such as (but not limited to) aircraft evacuation slides and rafts are detailed. Housings of the aspirators may be made of wound filaments of composite materials, reducing their weight as compared to conventional metal structures. Such actions as reconfiguring and repositioning jet nozzles within the housings also contribute to enhancing performance of the aspirators.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: December 4, 2012
    Assignee: Air Cruisers Company
    Inventors: Daniel A. McNeil, John O'Donnell, Frank Brown
  • Patent number: 8171956
    Abstract: There is provided a liquid supply method in which, when preparing a solution that can be used as washing water and the like by supplying a minute amount of chemicals and the like to ultrapure water, the amount of supply solution that is supplied can be accurately determined. In this liquid supply method, a solution is prepared by supplying a supply liquid to a primary fluid that is circulating in a primary fluid circulation tube (2). This liquid supply method uses a liquid supply apparatus (1) that includes: a supply section (3) that delivers the supply liquid; and a supply liquid circulation tube (4) that causes the supply liquid to flow from the supply section (3) to the primary fluid circulation tube (2), the internal diameter of the supply liquid circulation tube (4) being between 0.01 and 1 mm.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: May 8, 2012
    Assignees: Dainippon Ink and Chemicals, Inc., KITZ SCT Corporation
    Inventors: Toshikazu Suganuma, Yasushi Tomita, Kazunari Sakai, Naoki Hada, Katsuhiko Kazama
  • Patent number: 8146342
    Abstract: An exhaust eductor system includes a primary exhaust nozzle configured to transport an active flow stream; and a mixing duct at least partially surrounding the primary exhaust nozzle and configured to transport a passive flow stream that is entrained by mixing with the active flow stream from the primary exhaust nozzle. The mixing duct has an interior, and a baffle on the interior of the mixing duct is configured to prevent the mixed flow streams from exiting the mixing duct.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: April 3, 2012
    Assignee: Honeywell International Inc.
    Inventor: Z. Daniel Judd
  • Patent number: 8017275
    Abstract: An ejector is provided with a first fluid chamber into which hydrogen gas is introduced; a rod-shaped needle; a nozzle exhausting hydrogen gas introduced into the first fluid chamber from an exhaust port; a second fluid chamber into which hydrogen off-gas is introduced; a diffuser provided at the exhaust port of the nozzle; and a third fluid chamber into which air is introduced. The first fluid chamber is provided between the second fluid chamber and the third fluid chamber. The first diaphragm 65 separates the first fluid chamber and the second fluid chamber and the second diaphragm separates the first chamber and the third fluid chamber. Then, the needle and the nozzle moves to approach each other by the pressure of air introduced into the third fluid chamber and isolate each other by the pressure of hydrogen off-gas introduced into the second fluid chamber.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: September 13, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventor: Kazunori Fukuma
  • Publication number: 20100260618
    Abstract: Systems, methods and media for generating fluid flow in an algae cultivation pond are disclosed. Circulation of fluid in the algae cultivation pond is initiated via at least one jet. The circulation of fluid generates a velocity of fluid flow of at least ten centimeters per second in the algae cultivation pond. A head is provided to the at least one jet that overcomes a head loss associated with the velocity of fluid flow of at least ten centimeters per second in the algae cultivation pond.
    Type: Application
    Filed: June 16, 2009
    Publication date: October 14, 2010
    Inventors: Mehran Parsheh, Jordan Smith, Stephen Strutner, Guido Radaelli
  • Publication number: 20100150743
    Abstract: An apparatus for providing vacuum to a material handling device. The apparatus of the present invention provides a housing having an aperture extending therethrough. The aperture has an inlet end for receiving a supply of pressurized air and an outlet end. A valve is slidably disposed within said aperture of said housing for movement between a vacuum position, wherein vacuum is provided to the material handling device through the use of a venturi, and a release position, wherein atmosphere air pressure is provided directly to said material handling device.
    Type: Application
    Filed: August 20, 2009
    Publication date: June 17, 2010
    Applicant: Norgren Automotive, Inc.
    Inventor: Kenneth P. Dellach
  • Publication number: 20100104452
    Abstract: The present embodiments relate to a pump assembly comprising a pump which in turn comprises a low side and a high side. The pump assembly comprises a first inlet conduit in fluid communication with the low side and the pump assembly is adapted to provide a first operation condition in which first operation condition fluid is transported in the first inlet conduit towards the low side at a first flow rate. The pump assembly is further adapted to provide a second operation condition in which second operation condition fluid is transported in the first inlet conduit towards the low side at a second flow rate, wherein the first flow rate is lower than the second flow rate.
    Type: Application
    Filed: October 27, 2009
    Publication date: April 29, 2010
    Inventor: Lars-Olof Liberg
  • Patent number: 7615122
    Abstract: A method and apparatus provides for dispensing a liquid concentrate. The source pressure of a liquid diluent is changed by a boost pump (52) to bring the pressure of the diluent to an elevated pressure. The diluent then enters an aspirator assembly (10) wherein the concentrate and diluent are mixed to form a use solution. The dynamic pressure of the diluent entering the aspirator assembly (10) is sufficient so that the amount of concentrate delivered over time is more constant.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: November 10, 2009
    Assignee: Ecolab Inc.
    Inventors: Richard J. Mehus, Charles A. Hodge
  • Patent number: 7497666
    Abstract: A novel pressure-exchange ejector is disclosed whereby a high energy primary fluid transports and pressurizes a lower energy secondary fluid through direct fluid-fluid momentum exchange. The pressure-exchange ejector utilizes non-steady flow principles and both supersonic flow and subsonic flow embodiments are disclosed. The invention provides an ejector-compressor/pump which can attain substantially higher adiabatic efficiencies than conventional ejectors while retaining much of the simplicity of construction and the low manufacturing cost of a conventional ejector. Embodiments are shown which are appropriate for gas compression applications such as are found in ejector refrigeration, fuel cell pressurization, water desalinization, and power generation topping cycles, and for liquid pumping applications such as marine jet propulsion and slurry pumping.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: March 3, 2009
    Assignee: George Washington University
    Inventor: Charles A. Garris, Jr.
  • Patent number: 6955526
    Abstract: 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 nozzle has a diameter greater than that of the first nozzle. Switching means switches a state of the vacuum generator between a first state, in which a small amount of air sucked from the vacuum port, and a second state, in which a large amount of air is sucked from the vacuum port. The first nozzle, the second nozzle and the diffuser nozzle are serially arranged in that order.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: October 18, 2005
    Assignee: Nihon Pisco Co., Ltd.
    Inventors: Kiyoyasu Yamazaki, Toshimasa Kitahara, Suminori Masuzawa, Masataka Funahashi
  • Patent number: 6851936
    Abstract: 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 it. The exit flow duct is provided with choke means for resetting or variably setting the fluid volumetric flow, leaving by way of the exit flow duct, in order to be able to affect the pressure obtaining in the receiving space.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: February 8, 2005
    Assignee: Festo AG & Co.
    Inventors: Jürgen Stingel, Volker Quendt
  • Publication number: 20040241008
    Abstract: A fluid ejector head, includes a fluid ejector body adapted to be inserted into an opening of an enclosing medium having an interior surface, and at least one nozzle disposed on the fluid ejector body. The fluid ejector head further includes, a fluid ejector actuator in fluid communication with the at least one nozzle, wherein activation of the fluid ejector actuator ejects a fluid through the at least one nozzle at controlled locations onto the interior surface of the enclosing medium.
    Type: Application
    Filed: July 6, 2004
    Publication date: December 2, 2004
    Inventors: John Stephen Dunfield, James W. Ayres
  • Patent number: 6786700
    Abstract: A vapor evacuating device that enables product offloaders to quickly, easily, and safely offload chemicals and the associated vapors from vessels with minimal environmental impact and inconvenience by combining vapors from a tanker vehicle with an evacuation fluid, such as water, in order to yield a solution that is easily and safely disposed.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: September 7, 2004
    Inventor: Ernest Taylor
  • Patent number: 6729851
    Abstract: 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 ejector pump modules that share the same shape and construction and are closely arranged in a casing to be stacked side by side while being brought into contact with each other. The casing holds the ejector pump modules in place inside the vacuum generating device. A vacuum-off unit, used for releasing vacuum pressure from vacuum chambers of the ejector pump modules, is mounted onto the casing. The vacuum generating device also includes a vacuum-on solenoid valve connected to a first air inlet port of the casing, and a vacuum-off solenoid valve connected to a second air inlet port of the vacuum-off unit.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: May 4, 2004
    Assignee: Korea Pneumatic System Co., Ltd.
    Inventor: Ho-Young Cho
  • Patent number: 6729852
    Abstract: A vacuum producing means having a housing (2) with an inlet connection (4) and a suction connection (6) arranged opposite to same. The housing (2) comprises a suction nozzle means (16) and a gage pressure pulse means (35) arranged alongside same with the same alignment, for producing a fluid gage pressure pulse to be delivered into the suction space. The gage pressure pulse means (35) comprises a switching valve (35) combined with a pressure plenum (37), the valve member of the switching valve being so driven in a manner dependent of the differential thereat that the pressure plenum is either connected fluidwise with the inlet connection (4) or with the suction connection (6).
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: May 4, 2004
    Assignee: Festo AG & Co.
    Inventor: Jürgen Schnatterer
  • Publication number: 20040052646
    Abstract: The invention relates to a vacuum generator (1) of the type comprising at least one nozzle (2) and a compressed air mixer (3) communicating with a vacuum chamber (4).
    Type: Application
    Filed: September 22, 2003
    Publication date: March 18, 2004
    Inventors: Pascal Denoel, Jean-Emile Lopion, Yannick Arnaud
  • Publication number: 20030165388
    Abstract: A method and system for evacuating vapors from a vessel comprising at least one fluid line which can have a pump configured to draw a water and/or air mixture which is combined with vapors vacuumed from a tank via another inlet, yielding a solution that can then be disposed as a liquid. Vacuum at the inlet is created by the flowing of the water or air/water mixture past the inlet. The reduced pressure of the moving liquid causes a pressure differential with the higher pressure within the tank, and thus the vapors migrate into the vapor evacuation assembly, are mixed with the fluid, and can then be disposed, or continually recycled, with the fumes stored for later disposal.
    Type: Application
    Filed: November 5, 2002
    Publication date: September 4, 2003
    Inventor: Ernest Taylor
  • Patent number: 6582199
    Abstract: A multi-stage ejector pump having an ejector nozzle system with the nozzles situated coaxially behind each other and axially set apart from each other by a spaced distance. The ejector a nozzle system is made up of a set of individual nozzles and nozzle spacers. The ejector nozzle system can be sealingly pushed into a nozzle-receiving shaft of a housing element. The housing wall is interrupted in the area between adjacent nozzles to provide a fluid connection to suction chambers. Each individual nozzle is provided with support elements on its outer periphery. The support elements are axially set apart and provide tilt-free or low-tilt support in relation to the wall of the nozzle-receiving shaft. The aim of the invention is to provide a multi-stage ejector pump which has compact construction, interchangeable nozzles and a high degree of efficiency.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: June 24, 2003
    Inventor: Thilo Volkmann
  • Patent number: 6575705
    Abstract: A jet pump has a jet nozzle that discharges an operating fluid, a chamber into which a transfer fluid flows and which encloses the end of the jet nozzle, a throat pipe having a constriction portion and a jet nozzle through which the transfer fluid that flows into the chamber is discharged. The discharge end of the throat pipe has a smaller diameter than the base end, and is bent at an angle of approximately 90 degrees from the base end.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: June 10, 2003
    Assignees: Nissan Motor Co., Ltd., Nifco Inc.
    Inventors: Yasunori Akiyama, Taiki Aoyama, Tsuyoshi Kato, Itsuo Honda
  • Publication number: 20030082057
    Abstract: 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 ejector pump modules that share the same shape and construction and are closely arranged in a casing to be stacked side by side while being brought into contact with each other. The casing holds the ejector pump modules in place inside the vacuum generating device. A vacuum-off unit, used for releasing vacuum pressure from vacuum chambers of the ejector pump modules, is mounted onto the casing. The vacuum generating device also includes a vacuum-on solenoid valve connected to a first air inlet port of the casing, and a vacuum-off solenoid valve connected to a second air inlet port of the vacuum-off unit.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 1, 2003
    Applicant: Korea Pneumatic System Co., Ltd.
    Inventor: Ho-Young Cho
  • Publication number: 20030072653
    Abstract: 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, effectively protects its ejector unit from damage, and does not have an increased production cost in comparison with conventional vacuum generating devices. The vacuum generating device includes a block body having an air inlet port, a vacuum port, and an air outlet port, an ejector unit functioning to generate negative pressure in response to an action of compressed air flowing thereto via the air inlet port, and a control valve mechanism functioning to open or close air supply paths branching from a main flow path to an air inlet chamber of the ejector unit and the vacuum port. The block body has a recess, formed by depressing a surface of the block body to a predetermined depth.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 17, 2003
    Inventor: Ho-Young Cho
  • Patent number: 6364625
    Abstract: The present invention relates to a jet pump, in particular for transferring fuel in a motor vehicle fuel tank, the pump being characterized by the fact that it comprises a main nozzle (20) and a core (30) mounted to move relative to the outlet bore of the main nozzle (20) and downstream therefrom.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: April 2, 2002
    Assignee: Marwal Systems
    Inventor: Bruno Sertier
  • Patent number: 6270321
    Abstract: A sucking jet pump has a tubular casing 1, in which two flow channels 10, 24 are formed. The first flow channel 10 is the sucking jet pump and the second flow channel 24 is a bypass. The first flow channel 10 is formed by a tube 9 which is integrally formed in one piece onto an air branching piece 8. The tube 9 is in air flow connection with the second air supply nipple 14 via a lateral orifice 13. The two flow channels 10, 24 are flow-uncoupled from the first air supply nipple 6 in one direction by means of a nonreturn valve 26, the second flow channel 24 which forms the bypass being additionally closed relative to the air branching piece 8 by means of a second nonreturn valve 25.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: August 7, 2001
    Assignee: A. Kayser Automotive Systems GmbH
    Inventor: Franz Schulte
  • Patent number: 6224345
    Abstract: A pressure/vacuum generator is established by coupling the pressure port of a vacuum generator to an air pressure source while coupling a valve in fluid communication with the exhaust port of the vacuum generator. When the valve is in a normally open condition (i.e, the exhaust vented to atmosphere), the vacuum port of the pressure/vacuum generator generates a vacuum. When the valve is closed, thereby closing off the exhaust port, the vacuum port becomes a pressure port. Thus, this pressure/vacuum generator can be used in any number of fluid (liquid and gas) systems (e.g., fluid recovery system, fluid transfer system, etc.)that require both a pressure source and a vacuum source while using a minimum number of components.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: May 1, 2001
    Assignee: Bijur Lubrication Corporation
    Inventor: Christopher C. Dussault
  • Patent number: 6171069
    Abstract: 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 the jet pump's evaporator facilitates a more efficient cooling effect.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: January 9, 2001
    Inventors: Mikhail Levitin, Boris Khaytin
  • Patent number: 6155796
    Abstract: 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 nozzle and the receiver nozzle are provided in a suction valve with a first blocking piston for the propellant nozzle. A work conduit communicating with the pressure connection and a control conduit communicating with the pressure connection are provided and a blow conduit discharging via a blow valve into the suction connection communicates with a second blocking piston, and the piston position of the second blocking piston of the blow valve being triggerable via the control conduit.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: December 5, 2000
    Assignee: J. Schmalz GmbH
    Inventors: Kurt Schmalz, Wolfgang Schmalz, Hans Dittmann
  • Patent number: 6149395
    Abstract: A suction pulsator (1) used to periodically generate a vacuum in a container connected to it, especially in a collection container for mother's milk, which is provided with a suction funnel. A central nozzle hole (25) of a nozzle body (20) is provided, wherein a compressed air flow flows through the nozzle hole (25) and the nozzle body (20) is concentrically surrounded by a ring-shaped suction gap (35), wherein the nozzle (25) opens into a narrow, radial outlet gap (36), which is formed between a radial deflecting surface (40), which guides the compressed air flow over the suction gap (35), and annular surfaces (29, 30) of the nozzle body (20) and of a nozzle jacket (13), which concentrically surround the nozzle hole (25) and the suction gap (35). The suction gap (35) opening openly into the outlet gap (36) is in connection with a suction line (39), which can be connected to the collection container through a connection opening (38), which is arranged away from the outlet gap (36).
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: November 21, 2000
    Inventor: Siegfried Richter
  • Patent number: 6017195
    Abstract: An improved vacuum apparatus and method is provided which includes a vacuum body, pump or ejector which produces a plurality of high velocity liquid jet streams of a primary fluid (liquid) such as water discharged into a convergent diffuser to draw a secondary fluid (gas) such as air into a vacuum chamber. The secondary fluid (gas) is entrained within flow spaces formed between the liquid jet streams and is carried through the diffuser by the jet streams. A secondary fluid inlet is operatively connected to an elongate hose which serves as a vacuum line for evacuating, for example, a Mason Jar, a plastic bag, other food storage container, an oil storage or receiving receptacle, or the like. The present invention is especially adapted for use as or in a vacuum seal kit or oil change kit, but not limited thereto.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: January 25, 2000
    Inventor: Bill D. Skaggs
  • Patent number: 5954481
    Abstract: A jet pump includes a sucking jet pump with a flow duct having a decreasing cross section and a suction pipe insert which is inserted therein, a bypass arrangement and a valve arrangement, which form a construction unit, where the sucking jet pump has a nozzle insert which is inserted in a duct, which forms the flow duct with decreasing cross section.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: September 21, 1999
    Assignee: ITT Manufacturing Enterprises Inc.
    Inventors: Siegfried Baier, Peter Wenig, David Noone
  • Patent number: 5810563
    Abstract: 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 ejector pump and which displaces the fluid that is flowing against the profile in a lateral direction component away from the original direction of flow. Therefore, the fluid in the middle of the flow channel makes its way closer to one of the flow channel walls thus limiting the areas of turbulence that occur during the mixing of material that is to be transported with the driving medium.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: September 22, 1998
    Inventor: Thilo Volkmann
  • Patent number: 5624239
    Abstract: 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 is included in vacuum connection with the vacuum pump. A pressure regulator and filter combination is interposed between and in fluid connection with the pressurized fluid source and vacuum pump for adjusting pressure of the pressurized fluid entering the vacuum pump and for filtering particulates and liquids from the pressurized fluid. A relief valve is also interposed between and in fluid connection with the pressurized fluid source and vacuum pump for limiting pressure of the pressurized fluid. Finally, a check valve is positioned intermediate and in fluid connection with the vacuum pump and nozzle for preventing loss of vacuum upon cessation of pressurized fluid flow through the vacuum pump.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: April 29, 1997
    Inventor: Thomas W. Osika
  • Patent number: 5584668
    Abstract: 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 materials and at least one flow channel for the mixture of working fluid and materials. The pump includes at least one suction chamber per pump stage, each suction chamber being connected to a common antechamber with the intake of the materials at one end and the flow channel on the other. The flow channel is circular in shape and constructed for radially outward directed flow. The wall elements of the flow channel are comprised of ejector rings located concentrically to each other, adjacent ejector rings forming a passage for the materials between each suction chamber and the flow channel.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: December 17, 1996
    Inventor: Thilo Volkmann
  • Patent number: 5577893
    Abstract: An apparatus for vacuum absorption is provided which is quiet and simplified with maintaining an absorption power. The apparatus comprises: a tank for accumulating circulating water; a waterway for circulating the circulating water by a pump disposed at an absorption inlet side of the waterway and having an outlet disposed over the water surface of the circulating water in the tank; an aspirator disposed on the waterway; and a reverse flow prevention mechanism surrounding the outlet, having a small hole of the size to drain less volume of water than the volume flowing out of the outlet at the position sunk under the water, and comprising a buffer (hollow body) with drain windows at the position over the water surface. The apparatus serves to drain the circulating water into the water during the operation of the pump and to absorb air from the outlet into the vacuum vessel during the stoppage of the pump.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: November 26, 1996
    Assignee: Noritsu Koki Co., Ltd.
    Inventors: Hidetoshi Nishikawa, Keigo Arimoto, Kunio Kanai, Masayuki Kurematsu
  • Patent number: 5167273
    Abstract: An interior air temperature sensing system is provided for use with a vehicle interior compartment air temperature regulating system including an ambient air inlet duct, a blower housing connected to an air inlet duct and an air temperature modifier and a blower situated within the blower housing. The blower draws air from the air inlet duct under negative pressure and conveys the air at positive pressure past the air temperature modifier to the interior compartment. The air temperature sensing system includes an air temperature sensor and a venturi valve coupled to the negative pressure area of the blower. The valve includes an inlet port, and outlet port and a venturi section extending therebetween defining a point of minimum flow area, or valve seat.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: December 1, 1992
    Assignee: Ford Motor Company
    Inventors: Joseph L. Terry, Leonard J. Flack
  • Patent number: 5002465
    Abstract: In an aspirator (10) for pumping air into an inflatable (16), initial delivery of an aspirating fluid extends a piston (68) and the piston (68) extends an aspirator tube (24) to open an ambient air inlet (30) and render the aspirator (10) operable. Aspirating fluid pressure acts on a valve plug (112) and moves it into a first position in which the aspirating fluid pressure is connected to the linear fluid motor (66) for extending the piston (68). When inflation is substantially completed, back pressure from the inflatable (16) acts on a movable wall (74) which is connected to the valve plug (112) to produce a force which overrides the force of the aspirating fluid pressure acting on the valve plug (112). The overriding force moves the valve plug (112) into a second position in which flow of aspirating fluid into the linear motor (66) is blocked and the piston (68) is vented. A spring (48) then retracts the aspirator tube (24 ) closing the ambient air inlet (30), and disabling the aspirator (10).
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: March 26, 1991
    Assignee: The Boeing Company
    Inventors: Valerie H. Lagen, Steven P. Nagode, Richard B. Dustman
  • Patent number: 4990060
    Abstract: An air pump for inflating an inflatable article includes a multi-stage centrifugal compressing section for inhaling and compressing primary air and a secondary air inhaling mechanism provided downstream of the multi-stage centrifugal compressing section. At the beginning of the inflation operation, extra secondary air can be rapidly inhaled into the air pump and delivered into the inflatable article mainly by means of the secondary air inhaling mechanism and thereafter, when the inner pressure of the inflatable article gradually increases to exceed the predetermined level, the secondary air inhaling mechanism may be closed so that only the multi-stage centrifugal compressing section for primary air functions to continue the subsequent inflation operation in a higher pressure range. Thus, an ideal and speedy inflation operation may be achieved without reducing the inflation pressure.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: February 5, 1991
    Assignee: Team Worldwide Corporation
    Inventor: Wang Cheng-Chung
  • Patent number: 4938665
    Abstract: 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 the housing forms at least one propellant nozzle and at least one diffuser, to which is attached at least one suction chamber (50-56) behind the propellant nozzle (34) for the material to be conveyed. The flow passage (44) has rectangular cross section and is limited by symmetrical side limiting surfaces on separate housing walls (10, 12), between which wall elements (18, 20, 22), consisting of profile members, determine the sectional contours and dimensions for all of the lengthwise segments through the inside of the housing parallel to the plane of symmetry. A simple manufacture with use of a small number of basic parts is thus obtained, which provides for an adaptation to different capacities as well as different propellant mediums and conveyed materials.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: July 3, 1990
    Inventor: Jurgen Volkmann
  • Patent number: 4917152
    Abstract: A fluid injector consisting of an airfoil cross-sectioned rectangular plate mounted on and perpendicular to a pivoted hollow tube and suspended within a flowing stream of fluid into which another or the same type of fluid is to be injected through the tubular support exiting out the top surface of the plate and mixing with the primary fluid by means of vortices created at the rear side edges of the wing shaped plate. The quantity of injected fluid is controlled by the angle the plate is set in reference to the direction of flow of the primary fluid.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: April 17, 1990
    Inventor: William T. Decker
  • Patent number: 4880358
    Abstract: 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 bore comprising two or more linear exit passage sections, each said passage section being larger than and spaced from the passage section exhausting thereinto. Vacuum chambers between the exit passage sections each communicate with a surface of the pump housing through transverse bores, to a common vacuum manifold through which vacuum flow can be drawn through each of the vacuum chambers of the linear exit passage sections for exhaust through the final downstream exit passage section.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: November 14, 1989
    Assignee: Air-Vac Engineering Company, Inc.
    Inventor: Clifford S. Lasto
  • Patent number: 4865521
    Abstract: 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 outlet port of the ejector hole of the pump when a vacuum generated in a system within the pump is be broken. The valve is arranged in opposite relationship with the ejector hole of the pump and shifts to block the outlet port due to the pressure of compressed air supplied to the air sucking chamber of the pump so that the leakage of the vacuum breaking compressed air from the ejector hole is prevented thereby increasing the efficiency of vacuum breaking operation. The vacuum breaking device is applicable to a vacuum sucking device for attracting and sucking an article so as to transfer it to a desired place.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: September 12, 1989
    Assignee: Myotoku Ltd.
    Inventors: Yoji Ise, Akira Yamaguchi
  • Patent number: 4838953
    Abstract: 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 an outlet end for ejecting oil supplied to the inlet end, the outlet end having an outlet passage (6,20) through which oil is ejected at a higher velocity and lower pressure than the oil entering the inlet end, the ejection pressure being a function of outlet passage (6,20) cross-sectional area, wherein the nozzle member (4,18) includes, at the outlet end, a fixed part (4) having at least one opening (6) and a movable part (18) mounted to the fixed part (4) for movement transverse to the ejection direction and having at least one opening (20) at least partly overlapping the opening (6) in the fixed part (4), with the region of overlap between the openings (6,20) defining the outlet passage (6,20), and the ejector further includes a remotely actuatable displacing mechanism (24,26) coupled to the movable part (18) fo
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: June 13, 1989
    Assignee: Westinghouse Electric Corp.
    Inventor: Joseph Pankowiecki
  • Patent number: 4402651
    Abstract: A device for obtaining a vacuum by jetting compressed air characterized in that compressed air, that is, a vacuum state can be switched by changing the internal member fitting position so as to be in a form in response to the use and the manufacture is very easy.
    Type: Grant
    Filed: March 17, 1981
    Date of Patent: September 6, 1983
    Inventor: Yoji Ise
  • Patent number: 4245961
    Abstract: An improved ejector utilizing a vortex flow for pumping a fluid. The ejector includes a funnel shaped fluid chamber circumscribing a longitudinal axis and converging from a wide end to a narrow end. A venturi-like throat circumscribing the longitudinal axis is in fluid communication with the narrow end of the funnel shaped chamber. A pair of diametrically opposed fluid inlets are disposed in the wide end of the chamber for directing a driver fluid tangentially into the wide end of the funnel shaped chamber. The chamber and throat are configured to form the driver fluid into a swirling flow which advances toward the throat in the form of a vortex flow having a low pressure region. A secondary fluid inlet is in fluid communication with the low pressure region of the vortex flow. A deflector member is disposed in the funnel shaped chamber radially inward of the venturi throat. The deflector includes a surface which diverges away from the longitudinal axis.
    Type: Grant
    Filed: September 8, 1978
    Date of Patent: January 20, 1981
    Assignee: Martin Marietta Corporation
    Inventors: Jackie O. Bunting, Wayne E. Simon
  • Patent number: 4165571
    Abstract: The sea sled includes a pair of pontoons mounting depending rollers for straddling a pipeline disposed on the sea bottom. Water jets fluidize the sea bottom to form a trench in which the pipeline settles. The slurry formed by the water jets is removed from the trench by the eductor system which includes a pair of conduits each having a suction inlet at its lower end for location within the trench, a discharge at its upper end, a pair of pump nozzles each having an inlet external to the associated conduit and an outlet within the conduit directed toward the corresponding discharge, and a pair of primary nozzles respectively spaced from the inlet ends of the pump nozzles. A high pressure, low volume, fluid is pumped from the surface through the jet nozzles. The fluid emanating from the jet nozzles entrains ambient fluid and delivers low pressure, high volume, fluid through the respective pump nozzles to their corresponding discharges.
    Type: Grant
    Filed: December 30, 1976
    Date of Patent: August 28, 1979
    Assignee: Santa Fe International Corporation
    Inventors: Nuke M. Chang, Elmer R. Remkes