GB945328A - Servo operated fluid flow control valve - Google Patents

Servo operated fluid flow control valve

Info

Publication number
GB945328A
GB945328A GB1433361A GB1433361A GB945328A GB 945328 A GB945328 A GB 945328A GB 1433361 A GB1433361 A GB 1433361A GB 1433361 A GB1433361 A GB 1433361A GB 945328 A GB945328 A GB 945328A
Authority
GB
United Kingdom
Prior art keywords
pressure
valve
conduit
chamber
chambers
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
GB1433361A
Inventor
Bertram Carl Kempson
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 Hydraulic Units Ltd
Original Assignee
Dowty Hydraulic Units 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 Hydraulic Units Ltd filed Critical Dowty Hydraulic Units Ltd
Priority to GB1433361A priority Critical patent/GB945328A/en
Publication of GB945328A publication Critical patent/GB945328A/en
Expired legal-status Critical Current

Links

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
    • F16H—GEARING
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/02—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motors at a distance from liquid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

945,328. Fluid-pressure servomotor control systems. DOWTY HYDRAULIC UNITS Ltd. April 19, 1962 [ April 20, 1961], No. 14333/61. Heading G3P. A servo-operated valve for controlling the relief of pressure between two conduits, irrespective of which is the high pressure conduit, comprises a valve member 7 having a closure surface 11 co-operating with a seat 9. The valve member is formed on a stepped piston slidable in bores 8, 12 the cross-sectional area of the bore 8 being preferably twice that of the bore 12. Pressure chambers 14, 16 are provided on either side of the seat whereby the fluid pressure in these chambers acts on two surfaces of the valve member in the opening direction. Passages 19, 23, having restriction 21, 24 lead from the chambers past non-return valves 22, 25 to a control pressure chamber 18 which may be vented by a control valve 29. Passages 41, 43 also lead from the pressure chambers to chambers 39, 42 whereby fluid pressure acts on pistons 38, 37 to open the control valve 29. The valve is shown controlling the relief of pressure between conduits 2, 3 of an hydraulic transmission. Assuming that the conduit 3 is the high pressure conduit, fluid in chamber 14 passes through the passage 19 and valve 22 to the control chamber 18 and acts to hold valve 25 closed. This fluid pressure also acts in chamber 39 on piston 38. When the pressure reaches a predetermined value, the valve 29 is opened to vent chamber 18 and the pressure in chamber 14 opens the valve 7 to relieve pressure in the conduit 3. If conduit 2 is the high pressure conduit, the valve is opened in a similar manner by the pressure acting on piston 37.
GB1433361A 1961-04-20 1961-04-20 Servo operated fluid flow control valve Expired GB945328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1433361A GB945328A (en) 1961-04-20 1961-04-20 Servo operated fluid flow control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1433361A GB945328A (en) 1961-04-20 1961-04-20 Servo operated fluid flow control valve

Publications (1)

Publication Number Publication Date
GB945328A true GB945328A (en) 1963-12-23

Family

ID=10039297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1433361A Expired GB945328A (en) 1961-04-20 1961-04-20 Servo operated fluid flow control valve

Country Status (1)

Country Link
GB (1) GB945328A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483886A (en) * 1966-06-10 1969-12-16 Pellegrino E Napolitano Relief and bypass valve apparatus
FR2209063A1 (en) * 1972-12-04 1974-06-28 Unicovske Strojirny Np
FR2649178A1 (en) * 1989-06-29 1991-01-04 Rexroth Mannesmann Gmbh PILOT CONTROL VALVE FOR PRESSURE LIMITATION IN BOTH WAYS OF MOVEMENT
US5072752A (en) * 1991-03-14 1991-12-17 Sterling Hydraulics, Inc. Bidirectional cartridge valve
US6745992B2 (en) 2002-08-05 2004-06-08 Husco International, Inc. Pilot operated control valve having a poppet with integral pressure compensating mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483886A (en) * 1966-06-10 1969-12-16 Pellegrino E Napolitano Relief and bypass valve apparatus
FR2209063A1 (en) * 1972-12-04 1974-06-28 Unicovske Strojirny Np
FR2649178A1 (en) * 1989-06-29 1991-01-04 Rexroth Mannesmann Gmbh PILOT CONTROL VALVE FOR PRESSURE LIMITATION IN BOTH WAYS OF MOVEMENT
US5072752A (en) * 1991-03-14 1991-12-17 Sterling Hydraulics, Inc. Bidirectional cartridge valve
EP0503188A2 (en) * 1991-03-14 1992-09-16 Sterling Hydraulics, Inc. Bidirectional cartridge valve
EP0503188A3 (en) * 1991-03-14 1993-03-03 Sterling Hydraulics, Inc. Bidirectional cartridge valve
US6745992B2 (en) 2002-08-05 2004-06-08 Husco International, Inc. Pilot operated control valve having a poppet with integral pressure compensating mechanism

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