US3677300A - Pressure reducing devices - Google Patents

Pressure reducing devices Download PDF

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Publication number
US3677300A
US3677300A US53162A US3677300DA US3677300A US 3677300 A US3677300 A US 3677300A US 53162 A US53162 A US 53162A US 3677300D A US3677300D A US 3677300DA US 3677300 A US3677300 A US 3677300A
Authority
US
United States
Prior art keywords
pressure reducing
reducing device
path
outer portion
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US53162A
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English (en)
Inventor
Colin F King
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dunlop Holdings Ltd
Original Assignee
Dunlop Holdings Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dunlop Holdings Ltd filed Critical Dunlop Holdings Ltd
Application granted granted Critical
Publication of US3677300A publication Critical patent/US3677300A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/027—Throttle passages
    • F16L55/02709—Throttle passages in the form of perforated plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/027—Throttle passages
    • F16L55/02745—Throttle passages by passing through a mass of particles or a porous member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining
    • Y10T137/86734—With metering feature

Definitions

  • a pressure reducing device comprises an inlet for high pressure gas, an outlet for low pressure gas and -a path therebetween for flow of gas from inlet to outlet.
  • the path includes at least one porous baffle having a relatively coarse pore inner portion disposed in an inner zone of said path and a relatively fine pore outer portion in an outer zone of said path.
  • Porous materials that may be used include layers of gauze, expanded metal, sintered metal, ceramic foams and plastics foams such as rigiditied foams.
  • a pressure reducing device comprises an inlet for high pressure gas, an outlet for low pressure gas and a path therebetween for flow of gas from inlet to outlet.
  • the path includes at least one porous baffle having a relatively coarse pore inner portion disposed in an inner zone of said path and a relatively fine pore outer portion in an outer zone of said path.
  • the inner and outer portions of the baffle according to this invention may be integral or independent. When independent the portions may be in contact with one another or spaced apart.
  • the arrangment of the porous baffles should be such as to permit expansion of the gas while reducing to a minimum the turbulence produced by the expansion.
  • the outer portion may be formed by a female cone of porous material having an axial bore.
  • the outer portion may be formed by a series of co-axial annular discs of a porous material, whose internal diameters increase from inlet to outlet. These discs may or may not be contiguous.
  • the inner portion is conical or part-spherical.
  • the outer portion may be uniform throughout or it may have one or more cavities therein. These cavities may be enclosed at least in part by porous material.
  • the pressure reducing device may comprise an outer portion formed from a female cone of porous material, wherein, the body of the female cone is hollow, thereby forming a cavity which is totally enclosed by porous material.
  • Porous materials that may be used in the present invention include: layers of gauze, expanded metal, sintered metal,
  • the baffles according to this invention may be housed in a tube of suitable material positioned between the high pressure inlet and the low pressure outlet, in which case the baffles are sealed in the tube to prevent gas from by-passing them.
  • the baffles may be coated on their external surfaces with a suitable material, i.e. laminated aluminium foil/epoxy skin or a glass reinforced plastics skin, these units then being placed between the high pressure inlet and low pressure outlet.
  • baffles may be used alone or in conjunction with an additional mechanical reducing valve and/or with other types of baffle.
  • FIG. 1 shows a diagrammatic cross section of a first embodiment
  • FIG. 2 is a cross section of an alternate embodimenthaving contiguous annular discs and a spaced apart inner section
  • FIG. 3 is a further embodiment having spaced apart discs.
  • FIG. 1 The preferred embodiment shown in FIG. 1 comprises a cylindrical inlet and a coaxial cylindrical outlet 1 1 having a substantially larger diameter than the inlet 10.
  • a porous baffle Disposed between the inlet 10 and outlet 11 is a porous baffle made up of independent inner and outer portions.
  • the outer portion 30 is in the form of a female cone, of relatively fine pore foam metal, which has a central bore 32.
  • the inner portion 31 is in the form of a male cone of relatively coarse pore foam metal, and is located in the central bore 32 in contact with the outer portion 30.
  • the whole arrangement is sealed in tube 33 by a ring of 55 inch thick, pore/inch polyurethane foam (not shown) which is adhered to the pressure reducing device and is compressed when the device is fitted in the tube.
  • a pressure reducing device of the type described above was constructed in which: the male cone which forms the inner portion has base diameter 76 mm and height 102 mm-and is made from foam metal having 8 pores per inch; the female cone which forms the outer portion has diameter 76 mm and an overall length of 127 mm, and is made from foam metal having 80 pores per inch.
  • the noise level produced by a stream of air in the above pressure reducing device was measured using air velocity of 7.4 m/sec. In the absence of the diaphram the sound level was measured as 96 dB, whereas the arrangement described above produced a sound level of 79 dB and also silenced the high pitched whistle which was characteristic of the empty pipe.
  • the tube 37 contains a plurality of contiguous annular discs 35 of increasing internal diameter as an outer portion and an inner portion 34 which is spaced therefrom.
  • the annular discs 35 are separated by spaces 36, the inner portion 31 being similar to that shown in FIG. 1.
  • the baffles may be coated on their external surfaces with a material such as a laminate such as aluminum foil and a plastics material or a glass reinforced plastics material.
  • a pressure reducing device comprises an inlet for high pressure gas, an outlet for low pressure gas and a path therebetween for flow of gas from inlet to outlet, said path including at least one porous bafile having at least two portions, the first being a relatively coarse pore inner portion disposed in an inner zone of said path and the other being a relatively fine pore outer portion in an outer zone of said path.
  • a pressure reducing device in which the inner and outer portions are in contact with one another.
  • a pressure reducing device in which the inner and outer portions are integral.
  • a pressure reducing device according to claim 1 in which the inner and outer portions are spaced apart.
  • a pressure reducing device in which the outer portion is formed by a female cone of porous material, having an axial bore.
  • a pressure reducing device in which the outer portion is formed by a series of coaxial annular discs of increasing internal diameter.
  • a pressure reducing device in which the discs are contiguous with one another.
  • a pressure reducing device in which the discs are spaced apart.
  • a pressure reducing device in which the outer portion has at least one cavity which is enclosed at least in part by porous material.
  • a pressure reducing device in which the inner portion is thicker in its central region than in its outer region.
  • a pressure reducing device in which the inner portion is at least partly curved.
  • each baffle is disposed within at least one duct.
  • a pressure reducing device according to claim I in which the baffles are coated on their external surfaces.
  • a pressure reducing device in which the coating is a laminate of aluminum foil and a plastics material.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Pipe Accessories (AREA)
US53162A 1970-01-15 1970-07-08 Pressure reducing devices Expired - Lifetime US3677300A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB200170 1970-01-15

Publications (1)

Publication Number Publication Date
US3677300A true US3677300A (en) 1972-07-18

Family

ID=9731860

Family Applications (1)

Application Number Title Priority Date Filing Date
US53162A Expired - Lifetime US3677300A (en) 1970-01-15 1970-07-08 Pressure reducing devices

Country Status (7)

Country Link
US (1) US3677300A (ja)
JP (1) JPS4937052B1 (ja)
CA (1) CA926266A (ja)
DE (1) DE2035121C3 (ja)
FR (1) FR2076115B1 (ja)
GB (1) GB1307533A (ja)
NL (1) NL7010486A (ja)

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803816A (en) * 1973-07-05 1974-04-16 Mc Donnell Douglas Corp Patterned flow vent structure
US3823743A (en) * 1970-11-06 1974-07-16 Dunlap Holdings Ltd Pressure reducing device
US3838557A (en) * 1973-09-04 1974-10-01 Mc Donnell Douglas Corp Vent structure
US3876403A (en) * 1972-10-11 1975-04-08 Mc Donnell Douglas Corp Vent assembly
US3877487A (en) * 1973-07-05 1975-04-15 Mc Donnell Douglas Corp Controlled flow pattern vent structure
US3886969A (en) * 1973-05-23 1975-06-03 Us Energy Time delay vent valve
US3918142A (en) * 1973-09-04 1975-11-11 Mc Donnell Douglas Corp Method of fabricating a vent structure
US3919757A (en) * 1972-10-11 1975-11-18 Mc Donnell Douglas Corp Method of fabricating a vent structure containing separating particles
US3931835A (en) * 1972-10-11 1976-01-13 Mcdonnell Douglas Corporation Long term vent structure
US4107037A (en) * 1977-09-28 1978-08-15 Continental Oil Company Method and apparatus for automatic control of filtrate quality
US4185664A (en) * 1978-04-17 1980-01-29 Dresser Industries, Inc. Low noise fluid pressure reducer
DE3027809A1 (de) * 1980-07-23 1982-02-25 Wabco Steuerungstechnik GmbH & Co, 3000 Hannover Dichtungsanordnung fuer druckmittel
US4593478A (en) * 1983-04-15 1986-06-10 Ab Asea-Atom Pressure-reducing valve
US4668024A (en) * 1984-11-15 1987-05-26 Toyota Jidosha Kabushiki Kaisha Solenoid-operated hydraulic control device for anti-skid brake system
US5036948A (en) * 1989-01-12 1991-08-06 Heidelberger Druckmaschinen Ag Sound absorption device or muffler for blow nozzles
US5906225A (en) * 1997-09-10 1999-05-25 General Motors Corporation Orifice tube type refrigerant expansion valve assembly with combined particulate and noise attenuation filters
EP0943879A2 (en) * 1998-03-20 1999-09-22 Whirlpool Corporation Device for optimizing the flow of refrigerant fluid fed to an evaporator of a refrigeration circuit and acting as an expansion noise level reducer
US5966960A (en) * 1998-06-26 1999-10-19 General Motors Corporation Bi-directional refrigerant expansion valve
EP0987428A2 (en) * 1998-09-16 2000-03-22 Eaton Corporation Method of controlling fuel vapor canister purge flow and vapor management valve therefor
EP1046887A1 (de) * 1999-04-19 2000-10-25 Gamperl Gastechnik Vorrichtung zum Messen eines Fluidmassendurchflusses
EP1291593A2 (en) * 2001-08-31 2003-03-12 Matsushita Electric Industrial Co., Ltd. Silencer for air conditioner
US20050051382A1 (en) * 2003-09-10 2005-03-10 Voss Automotive Gmbh: Pneumatic blow-off silencer
US20050242123A1 (en) * 2004-03-17 2005-11-03 Finlay Patrick J Dispenser assembly having a porous flow control member
US20080029175A1 (en) * 2006-08-03 2008-02-07 Rolls-Royce Plc Fluid calming member
US7390121B2 (en) * 1998-03-27 2008-06-24 Bayer Aktiengesellschaft Static mixer module
US20080190689A1 (en) * 2007-02-12 2008-08-14 Ballard Ebbin C Inserts for engine exhaust systems
CN100436972C (zh) * 2001-01-31 2008-11-26 三菱电机株式会社 流量控制装置和空调装置
WO2009003246A1 (en) * 2007-07-04 2009-01-08 Bantix Worldwide Pty Ltd Gas adaptor
US20090321181A1 (en) * 2007-02-12 2009-12-31 Ballard Iii Ebbin C Inserts for engine exhaust systems
US20110077565A1 (en) * 2009-09-29 2011-03-31 Tyco Healthcare Group Lp Reduced noise pneumatic compression garment
US20110077564A1 (en) * 2009-09-29 2011-03-31 Tyco Healthcare Group Lp Pneumatic compression garment with noise attenuating means
US20110077566A1 (en) * 2009-09-29 2011-03-31 Tyco Healthcare Group Lp Pneumatic compression garment with noise attenuating means
US20120080113A1 (en) * 2009-06-12 2012-04-05 Francesco Mascarello Device for processing and conditioning of material transported through the device
WO2013106914A1 (en) * 2012-01-20 2013-07-25 Trojan Technologies Fluid flow modifier and fluid treatment system incorporating same
US20130247995A1 (en) * 2012-03-20 2013-09-26 The Aerospace Corporation Systems and Methods for a Control Valve
US20140216589A1 (en) * 2013-02-01 2014-08-07 Song Shoou-Jeng Multifunctional energy saving and carbon reduction apparatus
EP2821737A1 (de) * 2013-07-01 2015-01-07 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
CN106014542A (zh) * 2016-05-20 2016-10-12 成都格瑞特高压容器有限责任公司 高压消音器
US9746357B2 (en) * 2015-04-24 2017-08-29 Oes Medical Limited Flow sensing meter
DE102015105555B4 (de) 2015-04-13 2019-05-23 Odenwald-Chemie Gmbh Vorrichtung zur Strömungsberuhigung und Fahrzeug

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529546U (ja) * 1975-07-04 1977-01-22
AU538151B2 (en) * 1982-07-24 1984-08-02 K.K. Kobe Seiko Sho (Kobe Steel) Pressure reduction apparatus for solid particle containing high pressure liquids
FR2755745B1 (fr) * 1996-11-13 1998-12-11 Inst Francais Du Petrole Procede de transport d'un fluide dans une conduite comportant une structure poreuse

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1947586A (en) * 1931-04-24 1934-02-20 Hughes Tool Co Flow choke
US2090719A (en) * 1935-12-26 1937-08-24 Alt Karl Form of pipe coupling
US2304689A (en) * 1939-06-07 1942-12-08 Creamery Package Mfg Co Homogenizing valve
US2327195A (en) * 1940-07-03 1943-08-17 American Stove Co Combined fuel filter and regulator and cutoff device
US2815889A (en) * 1955-07-28 1957-12-10 Engine Parts Mfg Company Metering device controlling discharge of fluids from aerosol containers
US3042079A (en) * 1958-04-15 1962-07-03 American District Telegraph Co Adjustable vent
US3277812A (en) * 1963-12-20 1966-10-11 Behlen Mfg Company Inc Material storage means

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1947586A (en) * 1931-04-24 1934-02-20 Hughes Tool Co Flow choke
US2090719A (en) * 1935-12-26 1937-08-24 Alt Karl Form of pipe coupling
US2304689A (en) * 1939-06-07 1942-12-08 Creamery Package Mfg Co Homogenizing valve
US2327195A (en) * 1940-07-03 1943-08-17 American Stove Co Combined fuel filter and regulator and cutoff device
US2815889A (en) * 1955-07-28 1957-12-10 Engine Parts Mfg Company Metering device controlling discharge of fluids from aerosol containers
US3042079A (en) * 1958-04-15 1962-07-03 American District Telegraph Co Adjustable vent
US3277812A (en) * 1963-12-20 1966-10-11 Behlen Mfg Company Inc Material storage means

Cited By (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823743A (en) * 1970-11-06 1974-07-16 Dunlap Holdings Ltd Pressure reducing device
US3876403A (en) * 1972-10-11 1975-04-08 Mc Donnell Douglas Corp Vent assembly
US3919757A (en) * 1972-10-11 1975-11-18 Mc Donnell Douglas Corp Method of fabricating a vent structure containing separating particles
US3931835A (en) * 1972-10-11 1976-01-13 Mcdonnell Douglas Corporation Long term vent structure
US3886969A (en) * 1973-05-23 1975-06-03 Us Energy Time delay vent valve
US3803816A (en) * 1973-07-05 1974-04-16 Mc Donnell Douglas Corp Patterned flow vent structure
US3877487A (en) * 1973-07-05 1975-04-15 Mc Donnell Douglas Corp Controlled flow pattern vent structure
US3838557A (en) * 1973-09-04 1974-10-01 Mc Donnell Douglas Corp Vent structure
US3918142A (en) * 1973-09-04 1975-11-11 Mc Donnell Douglas Corp Method of fabricating a vent structure
US4107037A (en) * 1977-09-28 1978-08-15 Continental Oil Company Method and apparatus for automatic control of filtrate quality
US4185664A (en) * 1978-04-17 1980-01-29 Dresser Industries, Inc. Low noise fluid pressure reducer
DE3027809A1 (de) * 1980-07-23 1982-02-25 Wabco Steuerungstechnik GmbH & Co, 3000 Hannover Dichtungsanordnung fuer druckmittel
US4593478A (en) * 1983-04-15 1986-06-10 Ab Asea-Atom Pressure-reducing valve
US4668024A (en) * 1984-11-15 1987-05-26 Toyota Jidosha Kabushiki Kaisha Solenoid-operated hydraulic control device for anti-skid brake system
US5036948A (en) * 1989-01-12 1991-08-06 Heidelberger Druckmaschinen Ag Sound absorption device or muffler for blow nozzles
US5906225A (en) * 1997-09-10 1999-05-25 General Motors Corporation Orifice tube type refrigerant expansion valve assembly with combined particulate and noise attenuation filters
EP0943879A2 (en) * 1998-03-20 1999-09-22 Whirlpool Corporation Device for optimizing the flow of refrigerant fluid fed to an evaporator of a refrigeration circuit and acting as an expansion noise level reducer
EP0943879A3 (en) * 1998-03-20 2000-03-22 Whirlpool Corporation Device for optimizing the flow of refrigerant fluid fed to an evaporator of a refrigeration circuit and acting as an expansion noise level reducer
US7390121B2 (en) * 1998-03-27 2008-06-24 Bayer Aktiengesellschaft Static mixer module
US5966960A (en) * 1998-06-26 1999-10-19 General Motors Corporation Bi-directional refrigerant expansion valve
EP0987428A2 (en) * 1998-09-16 2000-03-22 Eaton Corporation Method of controlling fuel vapor canister purge flow and vapor management valve therefor
EP0987428A3 (en) * 1998-09-16 2000-11-02 Eaton Corporation Method of controlling fuel vapor canister purge flow and vapor management valve therefor
EP1046887A1 (de) * 1999-04-19 2000-10-25 Gamperl Gastechnik Vorrichtung zum Messen eines Fluidmassendurchflusses
CN100436972C (zh) * 2001-01-31 2008-11-26 三菱电机株式会社 流量控制装置和空调装置
EP1291593A3 (en) * 2001-08-31 2004-02-04 Matsushita Electric Industrial Co., Ltd. Silencer for air conditioner
EP1291593A2 (en) * 2001-08-31 2003-03-12 Matsushita Electric Industrial Co., Ltd. Silencer for air conditioner
US20050051382A1 (en) * 2003-09-10 2005-03-10 Voss Automotive Gmbh: Pneumatic blow-off silencer
US20050242123A1 (en) * 2004-03-17 2005-11-03 Finlay Patrick J Dispenser assembly having a porous flow control member
US7631786B2 (en) * 2004-03-17 2009-12-15 Pepsico, Inc. Dispenser assembly having a porous flow control member
US20080029175A1 (en) * 2006-08-03 2008-02-07 Rolls-Royce Plc Fluid calming member
US9121305B2 (en) 2006-08-03 2015-09-01 Rolls-Royce Plc Fluid calming member
US7905321B2 (en) * 2007-02-12 2011-03-15 Ballard Iii Ebbin C Inserts for engine exhaust systems
US20080190689A1 (en) * 2007-02-12 2008-08-14 Ballard Ebbin C Inserts for engine exhaust systems
US20090321181A1 (en) * 2007-02-12 2009-12-31 Ballard Iii Ebbin C Inserts for engine exhaust systems
WO2009003246A1 (en) * 2007-07-04 2009-01-08 Bantix Worldwide Pty Ltd Gas adaptor
US20100132802A1 (en) * 2007-07-04 2010-06-03 Bantix Worldwide Pty Ltd Gas adaptor
US8905080B2 (en) * 2009-06-12 2014-12-09 Eth Zurich Device for processing and conditioning of material transported through the device
US20120080113A1 (en) * 2009-06-12 2012-04-05 Francesco Mascarello Device for processing and conditioning of material transported through the device
US8469910B2 (en) 2009-09-29 2013-06-25 Covidien Lp Pneumatic compression garment with noise attenuating means
US20110077564A1 (en) * 2009-09-29 2011-03-31 Tyco Healthcare Group Lp Pneumatic compression garment with noise attenuating means
US20110077566A1 (en) * 2009-09-29 2011-03-31 Tyco Healthcare Group Lp Pneumatic compression garment with noise attenuating means
US20110077565A1 (en) * 2009-09-29 2011-03-31 Tyco Healthcare Group Lp Reduced noise pneumatic compression garment
US9033905B2 (en) 2009-09-29 2015-05-19 Covidien Lp Pneumatic compression garment with noise attenuating means
US8328741B2 (en) 2009-09-29 2012-12-11 Covidien Lp Pneumatic compression garment with noise attenuating means
US8801644B2 (en) 2009-09-29 2014-08-12 Covidien Lp Pneumatic compression garment with noise attenuation
US9572720B2 (en) 2009-09-29 2017-02-21 Covidien Lp Reduced noise pneumatic compression garment
CN104145122A (zh) * 2012-01-20 2014-11-12 特洁安技术公司 流体流量调节器和结合其的流体处理系统
WO2013106914A1 (en) * 2012-01-20 2013-07-25 Trojan Technologies Fluid flow modifier and fluid treatment system incorporating same
EP2805064A4 (en) * 2012-01-20 2015-09-30 Trojan Techn Inc FLUID FLOW MODIFIER AND FLUID TREATMENT SYSTEM INCLUDING THE MODIFIER
US9771959B2 (en) 2012-01-20 2017-09-26 Trojan Technologies Fluid flow modifier and fluid treatment system incorporating same
US20130247995A1 (en) * 2012-03-20 2013-09-26 The Aerospace Corporation Systems and Methods for a Control Valve
US20140216589A1 (en) * 2013-02-01 2014-08-07 Song Shoou-Jeng Multifunctional energy saving and carbon reduction apparatus
EP2821737A1 (de) * 2013-07-01 2015-01-07 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102015105555B4 (de) 2015-04-13 2019-05-23 Odenwald-Chemie Gmbh Vorrichtung zur Strömungsberuhigung und Fahrzeug
US9746357B2 (en) * 2015-04-24 2017-08-29 Oes Medical Limited Flow sensing meter
CN106014542A (zh) * 2016-05-20 2016-10-12 成都格瑞特高压容器有限责任公司 高压消音器
CN106014542B (zh) * 2016-05-20 2018-11-23 成都格瑞特高压容器有限责任公司 高压消声器

Also Published As

Publication number Publication date
CA926266A (en) 1973-05-15
FR2076115B1 (ja) 1973-01-12
NL7010486A (ja) 1971-07-19
GB1307533A (en) 1973-02-21
DE2035121A1 (de) 1971-07-22
DE2035121C3 (de) 1980-11-27
FR2076115A1 (ja) 1971-10-15
JPS4937052B1 (ja) 1974-10-05
DE2035121B2 (de) 1980-03-27

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