GB1170281A - Electro-Hydraulic Servo Valves. - Google Patents

Electro-Hydraulic Servo Valves.

Info

Publication number
GB1170281A
GB1170281A GB6742/66A GB674266A GB1170281A GB 1170281 A GB1170281 A GB 1170281A GB 6742/66 A GB6742/66 A GB 6742/66A GB 674266 A GB674266 A GB 674266A GB 1170281 A GB1170281 A GB 1170281A
Authority
GB
United Kingdom
Prior art keywords
spool
electro
hydraulic servo
feb
coil
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
Application number
GB6742/66A
Inventor
Thomas Desmond Hudson Andrews
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.)
Dowty Technical Developments Ltd
Original Assignee
Dowty Technical Developments 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 Dowty Technical Developments Ltd filed Critical Dowty Technical Developments Ltd
Priority to GB6742/66A priority Critical patent/GB1170281A/en
Priority to DE19671600741 priority patent/DE1600741B1/en
Priority to US615150A priority patent/US3457956A/en
Priority to FR95261A priority patent/FR1511833A/en
Priority to SE02161/67A priority patent/SE329064B/xx
Publication of GB1170281A publication Critical patent/GB1170281A/en
Expired legal-status Critical Current

Links

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
    • 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
    • F15B13/0438—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 nozzle-flapper 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

1,170,281. Fluid-pressure servomotor systems. DOWTY TECHNICAL DEVELOPMENTS Ltd. Feb.7, 1967 [Feb.16, 1966], No.6742/66. Heading G3P. An electro-hydraulic servo-valve comprises a main spool 23 controlling communication between inlet 14, work ports 21, 22 and exhaust 16, the spool having nozzles 31, 32 supplied from the inlet via restrictions 35, 36. Each nozzle cooperates with a spring-biased perforated diaphragm 37 supporting a coil 39 of an electromagnet 40 having a permanent magnet 42. The diaphragm chambers communicate with exhaust via passages 51, 52. The nozzle back pressures act on the axially outer faces of spool lands 25, 26 and the displacement of the spool is proportional to the current in either coil or to the difference. of the currents in the two coils.
GB6742/66A 1966-02-16 1966-02-16 Electro-Hydraulic Servo Valves. Expired GB1170281A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB6742/66A GB1170281A (en) 1966-02-16 1966-02-16 Electro-Hydraulic Servo Valves.
DE19671600741 DE1600741B1 (en) 1966-02-16 1967-02-09 ELECTROHYDRAULIC CONTROL VALVE
US615150A US3457956A (en) 1966-02-16 1967-02-10 Electro-hydraulic servo control valve
FR95261A FR1511833A (en) 1966-02-16 1967-02-16 Electro-hydraulic servo-drawers
SE02161/67A SE329064B (en) 1966-02-16 1967-02-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6742/66A GB1170281A (en) 1966-02-16 1966-02-16 Electro-Hydraulic Servo Valves.

Publications (1)

Publication Number Publication Date
GB1170281A true GB1170281A (en) 1969-11-12

Family

ID=9819955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6742/66A Expired GB1170281A (en) 1966-02-16 1966-02-16 Electro-Hydraulic Servo Valves.

Country Status (5)

Country Link
US (1) US3457956A (en)
DE (1) DE1600741B1 (en)
FR (1) FR1511833A (en)
GB (1) GB1170281A (en)
SE (1) SE329064B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1229731A (en) * 1968-01-15 1971-04-28
GB1276297A (en) * 1968-06-26 1972-06-01 Dowty Technical Dev Ltd Electro-hydraulic or electro-pneumatic valve system
GB1276296A (en) * 1968-06-26 1972-06-01 Dowty Technical Dev Ltd Piston valve
US3583443A (en) * 1969-09-18 1971-06-08 Ite Imperial Corp Valve with highly sensitive actuating means
US3934816A (en) * 1974-07-24 1976-01-27 International Telephone & Telegraph Corporation Fluid control valve
US4073313A (en) * 1974-12-06 1978-02-14 Fairchild Industries, Inc. Valve apparatus
DE3221928A1 (en) * 1982-06-11 1983-12-15 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen ELECTROPNEUMATIC PRE-CONTROL STAGE FOR A PNEUMATIC SERVO VALVE
GB8315078D0 (en) * 1983-06-01 1983-07-06 Sperry Ltd Two-stage directional control valves
US9028557B2 (en) 2013-03-14 2015-05-12 Freedom Innovations, Llc Prosthetic with voice coil valve
US9849002B2 (en) 2013-08-27 2017-12-26 Freedom Innovations, Llc Microprocessor controlled prosthetic ankle system for footwear and terrain adaptation

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126026A (en) * 1964-03-24 moore
US2409517A (en) * 1944-01-17 1946-10-15 Louis D Schmit Valve construction
US2587356A (en) * 1945-07-16 1952-02-26 Skinner Chuck Company Reversible valve structure
US2641279A (en) * 1948-06-10 1953-06-09 Weston Hydraulies Ltd Control valve for hydraulic actuating cylinders
US2625136A (en) * 1950-04-26 1953-01-13 Research Corp Electrohydraulic servo mechanism
US2824574A (en) * 1955-04-19 1958-02-25 Westinghouse Electric Corp Hydraulic servo-valve
GB805537A (en) * 1955-07-13 1958-12-10 Short Brothers & Harland Ltd Improvements in electro-hydraulic servo mechanisms
US3001549A (en) * 1957-09-23 1961-09-26 Magnavox Co High speed valve assembly
US3012579A (en) * 1959-06-08 1961-12-12 Pneumo Dynamics Corp Electrohydraulic servo valve
GB986800A (en) * 1960-07-09 1965-03-24 Standard Tel Kabelfab As Relay valve assembly and fluid operated position control device
US3081787A (en) * 1961-07-13 1963-03-19 Pneumo Dynamics Corp Hydraulic control valve
US3167632A (en) * 1961-12-18 1965-01-26 Easco Products Inc Electro-hydraulic electrode feed for spark cutting apparatus
US3304953A (en) * 1964-01-02 1967-02-21 Ohio Brass Co Fluid power system and valve mechanisms therefor

Also Published As

Publication number Publication date
SE329064B (en) 1970-09-28
FR1511833A (en) 1968-02-02
DE1600741B1 (en) 1972-05-31
US3457956A (en) 1969-07-29

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