GB1444910A - Electro-hydraulic actuator - Google Patents

Electro-hydraulic actuator

Info

Publication number
GB1444910A
GB1444910A GB4508072A GB4508072A GB1444910A GB 1444910 A GB1444910 A GB 1444910A GB 4508072 A GB4508072 A GB 4508072A GB 4508072 A GB4508072 A GB 4508072A GB 1444910 A GB1444910 A GB 1444910A
Authority
GB
United Kingdom
Prior art keywords
space
piston
pressure
valve
sept
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
GB4508072A
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.)
Unisys Group Services Ltd
Original Assignee
Sperry Rand 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 Sperry Rand Ltd filed Critical Sperry Rand Ltd
Priority to GB4508072A priority Critical patent/GB1444910A/en
Priority to US398412A priority patent/US3872772A/en
Priority to CH1343873A priority patent/CH560849A5/xx
Priority to DE2347061A priority patent/DE2347061C2/en
Priority to AU60574/73A priority patent/AU474484B2/en
Priority to CA181,826A priority patent/CA983351A/en
Priority to FR7334361A priority patent/FR2201405B1/fr
Priority to IT29374/73A priority patent/IT993424B/en
Priority to SE7313123A priority patent/SE399307B/en
Publication of GB1444910A publication Critical patent/GB1444910A/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
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/09—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor with electrical control means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)
  • Actuator (AREA)
  • Safety Valves (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

1444910 Fluid-pressure servomotor systems SPERRY RAND Ltd 13 Sept 1973 [29 Sept 1972] 45080/72 Heading G3P An annular space 2 surrounding a piston-rod 13 is in constant communication with a fluid-pressure supply 6 while a space 9 at the opposite side of the piston 3 communicates with the supply through a restriction 8 and with a tank connection 11 by way of a solenoid-operated valve 10, the valve being connected to the piston by a feedback spring 17. When the piston is fully retracted inwards, the feedback spring is counterbalanced by a spring 19 and the valve occupies a position in which the orifice it controls is of the same area as the restriction 8, the pressure in the space 9 being half that in the space 2. Variations in the energization of the solenoid 16 adjust the valve 10 and hence the pressure in the space 9 until equilibruim is restored.
GB4508072A 1972-09-29 1972-09-29 Electro-hydraulic actuator Expired GB1444910A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB4508072A GB1444910A (en) 1972-09-29 1972-09-29 Electro-hydraulic actuator
US398412A US3872772A (en) 1972-09-29 1973-09-18 Electro-hydraulic actuator
CH1343873A CH560849A5 (en) 1972-09-29 1973-09-19
DE2347061A DE2347061C2 (en) 1972-09-29 1973-09-19 Electro-hydraulic actuating device
AU60574/73A AU474484B2 (en) 1972-09-29 1973-09-21 Electrohydraulic actuator
CA181,826A CA983351A (en) 1972-09-29 1973-09-24 Electro-hydraulic actuator
FR7334361A FR2201405B1 (en) 1972-09-29 1973-09-25
IT29374/73A IT993424B (en) 1972-09-29 1973-09-25 ELECTRO-HYDRAULIC ACTUATOR
SE7313123A SE399307B (en) 1972-09-29 1973-09-26 ELECTROHYDRAULIC APPLICATION DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4508072A GB1444910A (en) 1972-09-29 1972-09-29 Electro-hydraulic actuator

Publications (1)

Publication Number Publication Date
GB1444910A true GB1444910A (en) 1976-08-04

Family

ID=10435804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4508072A Expired GB1444910A (en) 1972-09-29 1972-09-29 Electro-hydraulic actuator

Country Status (9)

Country Link
US (1) US3872772A (en)
AU (1) AU474484B2 (en)
CA (1) CA983351A (en)
CH (1) CH560849A5 (en)
DE (1) DE2347061C2 (en)
FR (1) FR2201405B1 (en)
GB (1) GB1444910A (en)
IT (1) IT993424B (en)
SE (1) SE399307B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1465674A (en) * 1973-02-26 1977-02-23 Sperry Rand Ltd Electrically-operated fluid actuator
GB1580946A (en) * 1977-05-27 1980-12-10 Abex Corp Flow control valve
DE3045831C2 (en) * 1980-12-05 1984-06-14 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Support flap for a rigidly closing breech of automatic firearms
DE4302130C2 (en) * 1993-01-27 1995-04-13 Orenstein & Koppel Ag Electro-hydraulic control unit
US6883320B2 (en) * 2003-07-08 2005-04-26 G. W. Lisk Company, Inc. Control system regulating air flow to engine intake
US8118571B2 (en) * 2005-03-31 2012-02-21 Dana Automotive Systems Group, Llc Actuator assembly

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574335A (en) * 1948-02-21 1951-11-06 Ledue Rene Fluid-pressure motor device for control systems
DE1092771B (en) * 1955-03-08 1960-11-10 Asea Ab Hydraulic servo motor
DE1072101B (en) * 1958-09-09 1959-12-24
FR1264660A (en) * 1960-05-13 1961-06-23 Rech Etudes Prod Electro-hydraulically operated positioner
FR1423873A (en) * 1964-11-24 1966-01-07 Franco Belge Mat Chemin Fer Hydro-electric linear positioning device
GB1141915A (en) * 1965-10-22 1969-02-05 Chandler Evans Inc A digital pulse operated positioning apparatus
GB1264121A (en) * 1968-02-14 1972-02-16
US3664235A (en) * 1969-09-22 1972-05-23 Serck Industries Ltd Fluid pressure operated servo arrangement
BE757514A (en) * 1969-10-15 1971-03-16 Bosch Gmbh Robert HYDRAULIC SYSTEM FOR CONTROL OF MOTOR VEHICLE UNITS, ESPECIALLY OF THE REEL OF A COMBINE

Also Published As

Publication number Publication date
CA983351A (en) 1976-02-10
DE2347061A1 (en) 1974-05-02
CH560849A5 (en) 1975-04-15
AU6057473A (en) 1975-03-27
FR2201405B1 (en) 1976-10-01
FR2201405A1 (en) 1974-04-26
AU474484B2 (en) 1976-07-22
US3872772A (en) 1975-03-25
DE2347061C2 (en) 1984-09-13
SE399307B (en) 1978-02-06
IT993424B (en) 1975-09-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee