US3109459A - Fluid resistor - Google Patents

Fluid resistor Download PDF

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Publication number
US3109459A
US3109459A US200692A US20069262A US3109459A US 3109459 A US3109459 A US 3109459A US 200692 A US200692 A US 200692A US 20069262 A US20069262 A US 20069262A US 3109459 A US3109459 A US 3109459A
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US
United States
Prior art keywords
fluid
bore
orifice
hollow
resistor
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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
US200692A
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English (en)
Inventor
Ii Leighton Lee
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Individual
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Priority to US200692A priority Critical patent/US3109459A/en
Priority to GB17574/63A priority patent/GB973386A/en
Priority to CH698463A priority patent/CH416233A/de
Priority to DEL45046A priority patent/DE1234461B/de
Application granted granted Critical
Publication of US3109459A publication Critical patent/US3109459A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0186—Control of flow without auxiliary power without moving parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • 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
    • 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

Definitions

  • FIG. 1 is a side elevation view of the fixed fluid resistor of this invention from the outside thereof;
  • FIG. 2 is a sectional side elevation view showing the fixed fluid resistor of FIG. 1 longitudinally sectioned;
  • FIG. 3 is a sectional elevation view of the fixed fluid resistor inserted into a fluid passage of a machine part and illustrating the fluid resistor in use as assembled.
  • the fixed fluid resistor includes a body 12 and a separate expander pin 14.
  • the body 12 is hollow and includes a cylindrical outer surface 16 provided with separate spaced annular grooves 18, 19 and 20. The portion of the cylindrical body 16 between these annular grooves constitutes lands 22 and 23.
  • the body 12 further includes, adjacent its end to be first inserted into a fluid passage, a chamfered shoulder 24 and a reduced diameter portion 25 with an extending inturned flange 26.
  • a precision drilled precalibrated orifice 28 see FIGS. 2 and 3.
  • the orifice is drilled in a thickened portion 27 of the hollow body 12below the reduced cylindrical diameter 25.
  • Leading into the precision calibrated orifice 28 are two tapered lead-in passages 30 and 31. These lead-in passages are predrilled with an included angle of 67 and to a controlled depth so that when the orifice 28 is drilled to any diameter, a constant L/ D (length/diameter) ratio for any different orifice size is obtained and standard entrance conditions for any size orifice are provided.
  • the hollow body 12 includes a cylindrical bore 34 with a shoulder or collar 35.
  • Filter element 40 is a screen which may be formed from a disc of perforated sheet stainless steel in such a manner to prevent distortion of the holes in the screen. Because the screen 40 is generally conical shaped with ribs thereon as shown, it has good rigidity and strength and at the same time, has a filtering area five times greater than that which could be obtained with a flat disc.
  • the filter screen 40 is attached to an annular disc 38 having a diameter at least as large as the entrance to lead-in passage 30. The filter screen 40 and disc 38 are secured to the cylindrical body 12 by the inturned flange 26.
  • the other filter element 44 is identical to filter element 40 and is mounted on an annular disc 42. As shown in FIG. 2 and FIG. 3, the filtering element 44 attached to disc 42 is situated against shoulder 35 on the inside of the body 12.
  • the annular discs 38 and 42 have openings 41 and 43 respectively which are larger in diameter than the opening of lead-in passages 30 and 31.
  • the expander pin 14 includes a bore 46 of a diameter at least as great as the entrance to the lead-in passages 30 and 31, and further includes a threaded outer portion of the bore 48 for accommodating extraction threads.
  • a portion of the outer surface of expander pin 50 is conically tapered in a predetermined degree and amount, relative to the tapered bore 37 of the body 12. The amount of taper is chosen such that when outer end 49 of expander pin 14, and outer end 39 of body 12 are substantially flush, a controlled radial expansion of the outside of body 12 in the area of the annular grooves 18, 19 and 20 and lands 22 and 23 has taken place. This radial expansion effectively seals the body 12 carrying the filtered fixed resistor within a bore or fluid passage. This radial expansion and sealing is generally described in my prior art 2,821,- 323, granted January 28, 1958.
  • FIG. 3 shows the filter fixed fluid resistance after it has been inserted into a fluid passage.
  • a casting 52 or any other metal part having a fluid passage therein may be provided with a bore 54.
  • a tapered shoulders 58 is provided in the bore and an enlarged reamed hole 56 is provided at the outer portion of the fluid pasage.
  • the hollow body 12 including a precalibrated fixed resistor 28 and filters 40 and 44 is of such outer diameter to provide a slip fit into the reamed hole 56. After slipping into the hole, the chamfered shoulder 24 of the cylindrical body 12 will mate with tapered shoulder 58 of the fluid passage.
  • the expander pin 14 is then inserted into the outer end of the body 12 and is pressed thereinto until end 49 of pin 14 is substantially flush with end 39 of cylindrical body 12. Because of the taper 50 on pin 14 and tapered area 37 on the inside of cylindrical body 12, the pin 14 will expand the cylindrical body '12 in the area indicated at 66 to form a hermetic seal of the body 12 against the walls of reamed hole '56.
  • an extractor bolt (not shown) having threads corresponding to threads 48 on expander pin 14 is screwed into pin 14 and a striker or other known puller may be used to remove pin 14.
  • another set of extraction threads on an extraction member (not shown) corresponding to threads 36 on member 12, may be screwed into the hollow body 12 and it may be pulled out by conventional means.
  • indicia 60 and 62 representing the value of the fixed fluid resistance of orifice 28 may be placed on inturned flange 26 or in any other suitable position.
  • indicia the angle between markings '60 and 62 could bear a proportional relationship to the value of the fixed fluid resistance.
  • the indicia markings 64 might be placed on end 39 of body 12 to indicate the degree of flow tolerance in either forward or reverse direction through the precalibrated orifice 28.
  • the controlled expansion of the cylindrical body 12 sealed the fixed fluid resistor so effective that it could withstand a pressure drop of 12,000 p.s.i. without having the body 12 move and yet the pin 14 and body '12 could be extracted without any damage to the bore 56 in the casting 52.
  • the body 12 could have outside diameter of 0.187 inch to allow it to be installed in any A inch A.'N. tubing fitting.
  • the overall length from surface 39 of body -12 to the tip of filter screen 40 would be 0.55 inch.
  • the orifice could by any one of a series of predetermined diameters provide a known resistance to fluid flow and the L/D ratio of the orifice would be 1.5 for all orifice sizes.
  • For the required expansion surface 39 of body 12 and surface 49 of pin 14 are flush to a tolerance of 1.005 inch.
  • the foregoing dimensions and tolerances are, of course, by way example only.
  • An insertable and removable fluid resistor for use in restricting flow in a fluid passage of a metal part comp (a) a hollow body having a generally cylindrical outer surface,
  • a removable fluid resistor for insertion into a cylindrical bore of a metal part, including a tubular fluid passage, the resistor comprising;
  • a removable fluid resistor for easy insertion into a cylindrical bore and fluid passage of a metal part, the cylindrical bore including a tapered shoulder, the fluid resistor comprising;
  • a pair of screen filters formed of perforated sheet metal secured to an annular disc, the screens being of generally conical shape and one being positioned on one side of the orifice and held by the inturned flange, while the other screen of identical size is positioned on the other side of the orifice at the shoulder portion of the hollow body,

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Measuring Fluid Pressure (AREA)
  • Filtration Of Liquid (AREA)
  • Nozzles (AREA)
US200692A 1962-06-07 1962-06-07 Fluid resistor Expired - Lifetime US3109459A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US200692A US3109459A (en) 1962-06-07 1962-06-07 Fluid resistor
GB17574/63A GB973386A (en) 1962-06-07 1963-05-03 Fluid resistor
CH698463A CH416233A (de) 1962-06-07 1963-06-05 Drosselvorrichtung
DEL45046A DE1234461B (de) 1962-06-07 1963-06-06 Drosselduesenanordnung in einem Stroemungs-kanal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US200692A US3109459A (en) 1962-06-07 1962-06-07 Fluid resistor

Publications (1)

Publication Number Publication Date
US3109459A true US3109459A (en) 1963-11-05

Family

ID=22742776

Family Applications (1)

Application Number Title Priority Date Filing Date
US200692A Expired - Lifetime US3109459A (en) 1962-06-07 1962-06-07 Fluid resistor

Country Status (4)

Country Link
US (1) US3109459A (de)
CH (1) CH416233A (de)
DE (1) DE1234461B (de)
GB (1) GB973386A (de)

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306357A (en) * 1964-07-22 1967-02-28 Cullen Flow line pressure control
US3319660A (en) * 1964-06-01 1967-05-16 Sperry Rand Corp Metering plug
US3323550A (en) * 1964-05-21 1967-06-06 Lee Co Fluid resistor
US3983903A (en) * 1974-12-23 1976-10-05 Combustion Engineering, Inc. Multiple orifice assembly
US4266576A (en) * 1977-11-30 1981-05-12 Eaton Corporation Flow control device in a protective housing
US4338969A (en) * 1977-12-09 1982-07-13 Usry Gerald O Through fault pressure filter for fault pressure relay
US4830057A (en) * 1987-03-18 1989-05-16 Hendrickson Brothers Screen and flow regulator assembly
US4874017A (en) * 1987-03-18 1989-10-17 Hendrickson Donald W Screen and flow regulator assembly
US4895178A (en) * 1988-06-10 1990-01-23 Agf Manufacturing, Inc. Device for cleaning a drain
US4957123A (en) * 1988-06-10 1990-09-18 Agf Manufacturing, Inc. Device for cleaning a drain
US4971117A (en) * 1987-03-18 1990-11-20 Hendrickson Donald W Screen and flow regulator assembly
US5137624A (en) * 1990-07-19 1992-08-11 Chrysler Corporation Bidirectional filter
US5234418A (en) * 1991-03-11 1993-08-10 Mcanlis Christine L Apparatus and method for bathing and/or soaking
US5499968A (en) * 1990-03-08 1996-03-19 Macnaught Pty Limited Flow controllers for fluid infusion sets
US5511585A (en) * 1994-03-31 1996-04-30 The Lee Company Method and device for providing fluid resistance within a flow passageway
US5581883A (en) * 1995-02-27 1996-12-10 Whirlpool Corporation Method of assembling an expansion device for a refrigeration system
US5588635A (en) * 1994-08-26 1996-12-31 Hartman; Thomas A. Liquid flow velocity diffuser
FR2754734A1 (fr) * 1996-10-18 1998-04-24 Filtertek Inc Ensemble a filtre, procede pour sa realisation et procede de moulage par injection d'un element en matiere plastique pour cet ensemble
WO1998041767A1 (en) * 1997-03-19 1998-09-24 Autotrol Corporation In-line drain flow control
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
US6000433A (en) * 1997-02-03 1999-12-14 Westinghouse Air Brake Co. Precision filtered choke
US6024129A (en) * 1998-07-16 2000-02-15 Schima; Frank E. Production efficient venturi insert
US6047737A (en) * 1998-10-30 2000-04-11 Nakamura; Koji Filter fixture
US20050045239A1 (en) * 2003-08-29 2005-03-03 Krieger Clifford P. Method and apparatus for reduction of fluid-borne noise in hydraulic systems
US20070227984A1 (en) * 2006-03-31 2007-10-04 Wells Allan R Injector fuel filter with built-in orifice for flow restriction
US20100155345A1 (en) * 2008-12-24 2010-06-24 Muhsen Shobbar Hashim Al-Sannaa Non-shedding strainer
US20160238046A1 (en) * 2015-02-18 2016-08-18 Badger Meter, Inc. Flow Conditioner
US20170009984A1 (en) * 2015-07-08 2017-01-12 Hanwha Techwin Co., Ltd. Impinging-type temperature uniformity device
US20200023433A1 (en) * 2018-07-17 2020-01-23 Honeywell International Inc. Additively-manufactured flow restrictors and methods for the fabrication thereof
CN111271482A (zh) * 2020-03-04 2020-06-12 高海秀 一种天然气管道取样阀
US10794794B2 (en) * 2018-08-02 2020-10-06 Lockheed Martin Corporation Flow conditioner
US11224830B2 (en) * 2018-08-15 2022-01-18 Mann+Hummel Gmbh Conical filter element with funnel directing particles to a trap
US20220049722A1 (en) * 2020-08-11 2022-02-17 The Boeing Company Multi-function orifice subassembly for flow limiters
US20230132304A1 (en) * 2021-10-25 2023-04-27 Bj Energy Solutions, Llc Systems and methods to reduce acoustic resonance or disrupt standing wave formation in a fluid manifold of a high-pressure fracturing system
FR3129437A1 (fr) 2021-11-25 2023-05-26 Safran Aircraft Engines Ensemble comportant un dispositif de lubrification d’équipement, notamment pour un boîtier d’accessoires de turbomachine
FR3133889A1 (fr) 2022-03-23 2023-09-29 Safran Aircraft Engines Ensemble d’alimentation en huile pour un boîtier d’accessoires de turbomachine
US20240084830A1 (en) * 2022-09-12 2024-03-14 Honeywell International Inc. Dual direction flow restrictor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH582324A5 (de) * 1975-03-20 1976-11-30 Bosch Gmbh Robert
SI9500098A (en) * 1995-03-27 1996-10-31 Rudi Belsak Multipart water restrictor
GB9800181D0 (en) * 1998-01-07 1998-03-04 Delphi France Automotive Sys Hydraulic energy breaker or transformer
DE10006915B4 (de) * 2000-02-16 2004-02-05 Siemens Ag Drosselbohrungsanordnung
CN106931267A (zh) * 2017-03-31 2017-07-07 中核核电运行管理有限公司 一种耐流动加速腐蚀的节流孔板组件

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953110A (en) * 1930-12-09 1934-04-03 Theodore K Holtane Flow bean
US2020412A (en) * 1934-11-22 1935-11-12 Handler William Attachment for beer dispensing apparatus
US2790463A (en) * 1956-03-19 1957-04-30 Delano & Garner Mfg Co Flow regulator
US2821323A (en) * 1955-12-07 1958-01-28 Lee Co Pin plug
US2992659A (en) * 1958-05-20 1961-07-18 Auto Research Corp High restriction metering unit
US3067777A (en) * 1960-06-07 1962-12-11 John F Briscoe Packless flow swivel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR377449A (fr) * 1907-04-23 1907-09-06 Ed Jesie Hannold Accouplement de tuyaux
FR499225A (fr) * 1916-12-18 1920-02-04 Gogu Constantinesco Procédé perfectionné et moyens pour alimenter les lignes de transmission par onde liquide
US1657751A (en) * 1925-09-25 1928-01-31 Henderson Ralph Irwin Oil-well plug
US2409294A (en) * 1943-11-15 1946-10-15 Carter Carburetor Corp Passage plug
FR992578A (fr) * 1944-07-07 1951-10-19 Buse de sablage
US2460407A (en) * 1945-12-10 1949-02-01 Orrin E Andrus Washer for garden hose couplings
FR69920E (fr) * 1956-03-27 1959-01-09 Bergische Stahlindustrie Coude pour tubes, notamment coude à 180 deg., avec dispositif de fermeture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953110A (en) * 1930-12-09 1934-04-03 Theodore K Holtane Flow bean
US2020412A (en) * 1934-11-22 1935-11-12 Handler William Attachment for beer dispensing apparatus
US2821323A (en) * 1955-12-07 1958-01-28 Lee Co Pin plug
US2790463A (en) * 1956-03-19 1957-04-30 Delano & Garner Mfg Co Flow regulator
US2992659A (en) * 1958-05-20 1961-07-18 Auto Research Corp High restriction metering unit
US3067777A (en) * 1960-06-07 1962-12-11 John F Briscoe Packless flow swivel

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323550A (en) * 1964-05-21 1967-06-06 Lee Co Fluid resistor
US3319660A (en) * 1964-06-01 1967-05-16 Sperry Rand Corp Metering plug
US3306357A (en) * 1964-07-22 1967-02-28 Cullen Flow line pressure control
US3983903A (en) * 1974-12-23 1976-10-05 Combustion Engineering, Inc. Multiple orifice assembly
US4266576A (en) * 1977-11-30 1981-05-12 Eaton Corporation Flow control device in a protective housing
US4338969A (en) * 1977-12-09 1982-07-13 Usry Gerald O Through fault pressure filter for fault pressure relay
US4971117A (en) * 1987-03-18 1990-11-20 Hendrickson Donald W Screen and flow regulator assembly
US4874017A (en) * 1987-03-18 1989-10-17 Hendrickson Donald W Screen and flow regulator assembly
US4830057A (en) * 1987-03-18 1989-05-16 Hendrickson Brothers Screen and flow regulator assembly
US4895178A (en) * 1988-06-10 1990-01-23 Agf Manufacturing, Inc. Device for cleaning a drain
US4957123A (en) * 1988-06-10 1990-09-18 Agf Manufacturing, Inc. Device for cleaning a drain
US5499968A (en) * 1990-03-08 1996-03-19 Macnaught Pty Limited Flow controllers for fluid infusion sets
US5137624A (en) * 1990-07-19 1992-08-11 Chrysler Corporation Bidirectional filter
US5234418A (en) * 1991-03-11 1993-08-10 Mcanlis Christine L Apparatus and method for bathing and/or soaking
US5511585A (en) * 1994-03-31 1996-04-30 The Lee Company Method and device for providing fluid resistance within a flow passageway
US5588635A (en) * 1994-08-26 1996-12-31 Hartman; Thomas A. Liquid flow velocity diffuser
US5581883A (en) * 1995-02-27 1996-12-10 Whirlpool Corporation Method of assembling an expansion device for a refrigeration system
FR2754734A1 (fr) * 1996-10-18 1998-04-24 Filtertek Inc Ensemble a filtre, procede pour sa realisation et procede de moulage par injection d'un element en matiere plastique pour cet ensemble
US5766469A (en) * 1996-10-18 1998-06-16 Filtertek, Inc. Orifice filter
US6000433A (en) * 1997-02-03 1999-12-14 Westinghouse Air Brake Co. Precision filtered choke
WO1998041767A1 (en) * 1997-03-19 1998-09-24 Autotrol Corporation In-line drain flow control
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
US6024129A (en) * 1998-07-16 2000-02-15 Schima; Frank E. Production efficient venturi insert
US6047737A (en) * 1998-10-30 2000-04-11 Nakamura; Koji Filter fixture
US20050045239A1 (en) * 2003-08-29 2005-03-03 Krieger Clifford P. Method and apparatus for reduction of fluid-borne noise in hydraulic systems
US7114525B2 (en) * 2003-08-29 2006-10-03 Dana Corporation Method and apparatus for reduction of fluid-borne noise in hydraulic systems
US20070227984A1 (en) * 2006-03-31 2007-10-04 Wells Allan R Injector fuel filter with built-in orifice for flow restriction
US7617991B2 (en) * 2006-03-31 2009-11-17 Delphi Technologies, Inc. Injector fuel filter with built-in orifice for flow restriction
US20100038459A1 (en) * 2006-03-31 2010-02-18 Wells Allan R Injector Fuel Filter With Built-In Orifice for Flow Restriction
US20100155345A1 (en) * 2008-12-24 2010-06-24 Muhsen Shobbar Hashim Al-Sannaa Non-shedding strainer
US8182702B2 (en) * 2008-12-24 2012-05-22 Saudi Arabian Oil Company Non-shedding strainer
US9885375B2 (en) * 2015-02-18 2018-02-06 Badger Meter, Inc. Flow conditioner
US20160238046A1 (en) * 2015-02-18 2016-08-18 Badger Meter, Inc. Flow Conditioner
US9915426B2 (en) * 2015-07-08 2018-03-13 Hanwha Techwin Co., Ltd. Impinging-type temperature uniformity device
US20170009984A1 (en) * 2015-07-08 2017-01-12 Hanwha Techwin Co., Ltd. Impinging-type temperature uniformity device
US10758981B2 (en) * 2018-07-17 2020-09-01 Honeywell International Inc. Additively-manufactured flow restrictors and methods for the fabrication thereof
US20200023433A1 (en) * 2018-07-17 2020-01-23 Honeywell International Inc. Additively-manufactured flow restrictors and methods for the fabrication thereof
US10794794B2 (en) * 2018-08-02 2020-10-06 Lockheed Martin Corporation Flow conditioner
US11224830B2 (en) * 2018-08-15 2022-01-18 Mann+Hummel Gmbh Conical filter element with funnel directing particles to a trap
CN111271482A (zh) * 2020-03-04 2020-06-12 高海秀 一种天然气管道取样阀
US20220049722A1 (en) * 2020-08-11 2022-02-17 The Boeing Company Multi-function orifice subassembly for flow limiters
US11913586B2 (en) * 2020-08-11 2024-02-27 The Boeing Company Multi-function orifice subassembly for flow limiters
US20230132304A1 (en) * 2021-10-25 2023-04-27 Bj Energy Solutions, Llc Systems and methods to reduce acoustic resonance or disrupt standing wave formation in a fluid manifold of a high-pressure fracturing system
FR3129437A1 (fr) 2021-11-25 2023-05-26 Safran Aircraft Engines Ensemble comportant un dispositif de lubrification d’équipement, notamment pour un boîtier d’accessoires de turbomachine
FR3133889A1 (fr) 2022-03-23 2023-09-29 Safran Aircraft Engines Ensemble d’alimentation en huile pour un boîtier d’accessoires de turbomachine
US20240084830A1 (en) * 2022-09-12 2024-03-14 Honeywell International Inc. Dual direction flow restrictor

Also Published As

Publication number Publication date
DE1234461B (de) 1967-02-16
CH416233A (de) 1966-06-30
GB973386A (en) 1964-10-28

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