US3922955A - Fail-fixed servovalve - Google Patents

Fail-fixed servovalve Download PDF

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Publication number
US3922955A
US3922955A US437667*A US43766774A US3922955A US 3922955 A US3922955 A US 3922955A US 43766774 A US43766774 A US 43766774A US 3922955 A US3922955 A US 3922955A
Authority
US
United States
Prior art keywords
spool
sleeve
liquid
servopiston
flow communication
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
US437667*A
Other languages
English (en)
Inventor
Howard Berdolt Kast
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to US437667*A priority Critical patent/US3922955A/en
Priority to GB3170/75A priority patent/GB1489321A/en
Priority to DE19752503067 priority patent/DE2503067A1/de
Priority to IT19604/75A priority patent/IT1031166B/it
Priority to JP50011021A priority patent/JPS604364B2/ja
Priority to BE152826A priority patent/BE824920A/fr
Priority to FR7502749A priority patent/FR2259263B1/fr
Application granted granted Critical
Publication of US3922955A publication Critical patent/US3922955A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/127—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action with step-by-step action
    • F15B11/128—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action with step-by-step action by means of actuators of the standard type with special circuit controlling means
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0436—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being of the steerable jet type
    • 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
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/8659—Variable orifice-type modulator
    • Y10T137/86598—Opposed orifices; interposed modulator
    • 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
    • Y10T137/86574—Supply and exhaust
    • Y10T137/8667—Reciprocating valve
    • Y10T137/86694—Piston valve
    • Y10T137/86702—With internal flow passage

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Servomotors (AREA)
US437667*A 1974-01-29 1974-01-29 Fail-fixed servovalve Expired - Lifetime US3922955A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US437667*A US3922955A (en) 1974-01-29 1974-01-29 Fail-fixed servovalve
GB3170/75A GB1489321A (en) 1974-01-29 1975-01-24 Servovalves and servomotors incorporating such valves
DE19752503067 DE2503067A1 (de) 1974-01-29 1975-01-25 Servoventil mit ausfall-blockierung
IT19604/75A IT1031166B (it) 1974-01-29 1975-01-27 Servovalvola a bloccaggio in cas di guasto
JP50011021A JPS604364B2 (ja) 1974-01-29 1975-01-28 サ−ボ弁
BE152826A BE824920A (fr) 1974-01-29 1975-01-29 Servo-distributeur
FR7502749A FR2259263B1 (fr) 1974-01-29 1975-01-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US437667*A US3922955A (en) 1974-01-29 1974-01-29 Fail-fixed servovalve

Publications (1)

Publication Number Publication Date
US3922955A true US3922955A (en) 1975-12-02

Family

ID=23737390

Family Applications (1)

Application Number Title Priority Date Filing Date
US437667*A Expired - Lifetime US3922955A (en) 1974-01-29 1974-01-29 Fail-fixed servovalve

Country Status (7)

Country Link
US (1) US3922955A (fr)
JP (1) JPS604364B2 (fr)
BE (1) BE824920A (fr)
DE (1) DE2503067A1 (fr)
FR (1) FR2259263B1 (fr)
GB (1) GB1489321A (fr)
IT (1) IT1031166B (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103592A (en) * 1975-12-19 1978-08-01 General Electric Company Valve operator
DE2831661A1 (de) * 1977-07-22 1979-03-29 Gen Electric Steuereinrichtung fuer ein gasturbinentriebwerk
FR2436926A1 (fr) * 1978-09-25 1980-04-18 Gen Electric Servo-distributeur perfectionne
US4220074A (en) * 1977-05-25 1980-09-02 Vapor Corporation Switching valve
US4276809A (en) * 1979-04-23 1981-07-07 General Electric Company Simplified fail-fixed servovalve
US4375780A (en) * 1980-01-28 1983-03-08 General Electric Company Fail-fixed electrohydraulic servosystem
US4510848A (en) * 1982-09-30 1985-04-16 General Electric Company Shear-type fail-fixed servovalve
WO1988004367A1 (fr) * 1988-01-25 1988-06-16 Moog Inc. Servosoupape a securite integree et a regulation de fuite en position extreme
US5622095A (en) * 1995-06-28 1997-04-22 Foster; Raymond K. Hydraulic drive and control system
US5735122A (en) * 1996-11-29 1998-04-07 United Technologies Corporation Actuator with failfixed zero drift
US20020043287A1 (en) * 2000-10-13 2002-04-18 Yakov Beyrak Proportional pilot operated directional valve
FR2818331A1 (fr) * 2000-12-19 2002-06-21 Snecma Moteurs Servo-valve a memoire de position
US20070023093A1 (en) * 2005-07-28 2007-02-01 Honeywell International Latchable electrohydraulic servovalve
EP1972798A1 (fr) * 2007-03-21 2008-09-24 Hispano-Suiza Dispositif de commande de position d'un actionneur par une servo-valve à mémoire de position en cas de panne
US20090146088A1 (en) * 2007-12-05 2009-06-11 Abb Ag Method for operation of a position regulator
US20110173988A1 (en) * 2008-11-13 2011-07-21 Sweet David H Adaptive fail-fixed system for fadec controlled gas turbine engines
US20130087223A1 (en) * 2011-10-10 2013-04-11 In-Lhc Method of detecting failure of a servo-valve, and a servo-valve applying the method
US20190024818A1 (en) * 2017-07-20 2019-01-24 Hamilton Sundstrand Corporation Servovalve
US11125342B2 (en) * 2018-12-28 2021-09-21 Ckd Corporation Spool valve
US11391301B2 (en) * 2020-04-14 2022-07-19 Honeywell International Inc. Electrohydraulic poppet valve device control that maintains the last commanded position of a device upon power interruption and provides back-up position control

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1140467B (it) * 1981-10-27 1986-09-24 Giorgio Cafarelli Valvola ad ugello oscillante

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796851A (en) * 1954-03-30 1957-06-25 Int Harvester Co Valve operating mechanism for hydraulic steering systems
US3028880A (en) * 1960-04-05 1962-04-10 Sperry Rand Corp Fluid flow control valve
US3282283A (en) * 1963-12-23 1966-11-01 Gocko Regulator Co Ltd Hydraulic regulating system and apparatus
US3472278A (en) * 1966-10-27 1969-10-14 Henriksen & Henriksen I S Slide valve for opening and closing at least one passage for a flowing medium and an apparatus comprising at least one such slide valve
US3528446A (en) * 1968-02-27 1970-09-15 Sperry Rand Corp Servo valve with resiliently mounted jet pipe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2161923A1 (de) * 1971-12-14 1973-06-20 Bosch Gmbh Robert Elektrohydraulische steuereinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796851A (en) * 1954-03-30 1957-06-25 Int Harvester Co Valve operating mechanism for hydraulic steering systems
US3028880A (en) * 1960-04-05 1962-04-10 Sperry Rand Corp Fluid flow control valve
US3282283A (en) * 1963-12-23 1966-11-01 Gocko Regulator Co Ltd Hydraulic regulating system and apparatus
US3472278A (en) * 1966-10-27 1969-10-14 Henriksen & Henriksen I S Slide valve for opening and closing at least one passage for a flowing medium and an apparatus comprising at least one such slide valve
US3528446A (en) * 1968-02-27 1970-09-15 Sperry Rand Corp Servo valve with resiliently mounted jet pipe

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103592A (en) * 1975-12-19 1978-08-01 General Electric Company Valve operator
US4220074A (en) * 1977-05-25 1980-09-02 Vapor Corporation Switching valve
DE2831661A1 (de) * 1977-07-22 1979-03-29 Gen Electric Steuereinrichtung fuer ein gasturbinentriebwerk
FR2436926A1 (fr) * 1978-09-25 1980-04-18 Gen Electric Servo-distributeur perfectionne
US4227443A (en) * 1978-09-25 1980-10-14 General Electric Company Fail-fixed servovalve
US4276809A (en) * 1979-04-23 1981-07-07 General Electric Company Simplified fail-fixed servovalve
US4375780A (en) * 1980-01-28 1983-03-08 General Electric Company Fail-fixed electrohydraulic servosystem
US4510848A (en) * 1982-09-30 1985-04-16 General Electric Company Shear-type fail-fixed servovalve
WO1988004367A1 (fr) * 1988-01-25 1988-06-16 Moog Inc. Servosoupape a securite integree et a regulation de fuite en position extreme
US4827981A (en) * 1988-01-25 1989-05-09 Moog Inc. Fail-fixed servovalve with controlled hard-over leakage
US5622095A (en) * 1995-06-28 1997-04-22 Foster; Raymond K. Hydraulic drive and control system
US5735122A (en) * 1996-11-29 1998-04-07 United Technologies Corporation Actuator with failfixed zero drift
US20020043287A1 (en) * 2000-10-13 2002-04-18 Yakov Beyrak Proportional pilot operated directional valve
US6554014B2 (en) * 2000-10-13 2003-04-29 Hydraforce, Inc. Proportional pilot operated directional valve
FR2818331A1 (fr) * 2000-12-19 2002-06-21 Snecma Moteurs Servo-valve a memoire de position
US6640833B2 (en) 2000-12-19 2003-11-04 Snecma Moteurs Fail-freeze servovalve
US20070023093A1 (en) * 2005-07-28 2007-02-01 Honeywell International Latchable electrohydraulic servovalve
US7455074B2 (en) * 2005-07-28 2008-11-25 Honeywell International Inc. Latchable electrohydraulic servovalve
US8091584B2 (en) 2007-03-21 2012-01-10 Snecma Actuator position control device using a fail freeze servo-valve
US20080230127A1 (en) * 2007-03-21 2008-09-25 Hispano Suiza Actuator position control device using a fail freeze servo-valve
FR2914030A1 (fr) * 2007-03-21 2008-09-26 Hispano Suiza Sa Dispositif de commande de position d'un actionneur par une servovalve a memoire de position en cas de panne
EP1972798A1 (fr) * 2007-03-21 2008-09-24 Hispano-Suiza Dispositif de commande de position d'un actionneur par une servo-valve à mémoire de position en cas de panne
CN101270768B (zh) * 2007-03-21 2012-03-28 伊斯帕诺-絮扎公司 一种使用故障冻结伺服阀的制动器位置控制装置
US8317154B2 (en) * 2007-12-05 2012-11-27 Abb Ag Method for operation of a position regulator
US20090146088A1 (en) * 2007-12-05 2009-06-11 Abb Ag Method for operation of a position regulator
US20110173988A1 (en) * 2008-11-13 2011-07-21 Sweet David H Adaptive fail-fixed system for fadec controlled gas turbine engines
US9217376B2 (en) * 2008-11-13 2015-12-22 Sikorsky Aircraft Corporation Multi-mode adaptive fail-fixed system for FADEC controlled gas turbine engines
US20130087223A1 (en) * 2011-10-10 2013-04-11 In-Lhc Method of detecting failure of a servo-valve, and a servo-valve applying the method
US9897116B2 (en) * 2011-10-10 2018-02-20 In-Lhc Method of detecting failure of a servo-valve, and a servo-valve applying the method
US20190024818A1 (en) * 2017-07-20 2019-01-24 Hamilton Sundstrand Corporation Servovalve
US11060631B2 (en) * 2017-07-20 2021-07-13 Hamilton Sunstrand Corporation Servovalve
US11125342B2 (en) * 2018-12-28 2021-09-21 Ckd Corporation Spool valve
US11391301B2 (en) * 2020-04-14 2022-07-19 Honeywell International Inc. Electrohydraulic poppet valve device control that maintains the last commanded position of a device upon power interruption and provides back-up position control

Also Published As

Publication number Publication date
FR2259263B1 (fr) 1980-11-07
JPS604364B2 (ja) 1985-02-04
DE2503067A1 (de) 1975-07-31
BE824920A (fr) 1975-05-15
FR2259263A1 (fr) 1975-08-22
JPS50107387A (fr) 1975-08-23
DE2503067C2 (fr) 1989-09-28
IT1031166B (it) 1979-04-30
GB1489321A (en) 1977-10-19

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