GB1174768A - Fluid Pressure Control Valve - Google Patents
Fluid Pressure Control ValveInfo
- Publication number
- GB1174768A GB1174768A GB933266A GB933266A GB1174768A GB 1174768 A GB1174768 A GB 1174768A GB 933266 A GB933266 A GB 933266A GB 933266 A GB933266 A GB 933266A GB 1174768 A GB1174768 A GB 1174768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- pressure
- core
- inlet
- spool
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Servomotors (AREA)
Abstract
1,174,768. Fluid-pressure servomotor systems. DOWTY ELECTRICS Ltd. April 4, 1967 [March 3, 1966], No.9332/66. Heading G3P. [Also in Division F2] A gas or liquid servocontrol valve comprises a spool 3 centred by springs 43, 44 and moved by the pressure in control chambers 4, 5 supplied from inlet 8 via restricted passages 41, 42. The control pressures vary according to the currents in coils 30 which position leak-valves 33, 38 relative to respective nozzles 23, 37. The coils form part of pilot valves 18, 19 comprising a core 25 and an annular permanent magnet 27; alternatively, the core or the valve member could be of permanently magnetized material. The coils are connected in series in phase opposition so that a signal causes increased pressure in one control chamber and decreased pressure in the other. The main spool 3 has Zero lap in its null position and moves to connect one work port 7, 9 to the inlet and the other work port to its exhaust 6, 11, the port openings being proportional to the said signal. The grooves in the lands 14-16 reduce friction. The coils are impregnated with an insulating resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB933266A GB1174768A (en) | 1966-03-03 | 1966-03-03 | Fluid Pressure Control Valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB933266A GB1174768A (en) | 1966-03-03 | 1966-03-03 | Fluid Pressure Control Valve |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1174768A true GB1174768A (en) | 1969-12-17 |
Family
ID=9869916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB933266A Expired GB1174768A (en) | 1966-03-03 | 1966-03-03 | Fluid Pressure Control Valve |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1174768A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2433920A1 (en) * | 1974-05-31 | 1975-12-11 | Yuken Kogyo Co Ltd | ELECTROMAGNETIC PROPORTIONAL VALVE FOR CONTROL OF THE DIRECTION OF FLOW AND THROAT |
DE2949202A1 (en) * | 1978-12-07 | 1980-06-26 | Toyooki Kogyo Kk | ELECTRICALLY ACTUATED FLUID CONTROL DEVICE |
DE3226696A1 (en) * | 1981-07-17 | 1983-02-03 | Fiat Auto S.p.A., 10100 Turin | FLOW RATE VALVE FOR HYDRAULIC CIRCUIT |
EP0093340A2 (en) * | 1982-05-05 | 1983-11-09 | Mannesmann Kienzle GmbH | Electropneumatic servo valve for a volume flow or pressure control |
EP0116739A2 (en) * | 1982-07-02 | 1984-08-29 | Vickers Incorporated | Hydraulic valve |
EP0128740B1 (en) * | 1983-06-09 | 1988-09-21 | Applied Power Inc. | Pressure regulator |
GB2256288A (en) * | 1991-05-30 | 1992-12-02 | Coltec Ind Inc | Solenoid operated pressure regulating valve |
WO2020032881A3 (en) * | 2018-03-15 | 2020-06-25 | Enginsu Rahmi | Three conic poppet directional control valve |
-
1966
- 1966-03-03 GB GB933266A patent/GB1174768A/en not_active Expired
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2433920A1 (en) * | 1974-05-31 | 1975-12-11 | Yuken Kogyo Co Ltd | ELECTROMAGNETIC PROPORTIONAL VALVE FOR CONTROL OF THE DIRECTION OF FLOW AND THROAT |
DE2949202A1 (en) * | 1978-12-07 | 1980-06-26 | Toyooki Kogyo Kk | ELECTRICALLY ACTUATED FLUID CONTROL DEVICE |
DE3226696A1 (en) * | 1981-07-17 | 1983-02-03 | Fiat Auto S.p.A., 10100 Turin | FLOW RATE VALVE FOR HYDRAULIC CIRCUIT |
EP0093340A2 (en) * | 1982-05-05 | 1983-11-09 | Mannesmann Kienzle GmbH | Electropneumatic servo valve for a volume flow or pressure control |
EP0093340A3 (en) * | 1982-05-05 | 1984-03-28 | Mannesmann Kienzle GmbH | Electropneumatic servo valve for a volume flow or pressure control |
EP0116739A2 (en) * | 1982-07-02 | 1984-08-29 | Vickers Incorporated | Hydraulic valve |
EP0116739A3 (en) * | 1982-07-02 | 1985-05-02 | Vickers Incorporated | Hydraulic valve |
EP0128740B1 (en) * | 1983-06-09 | 1988-09-21 | Applied Power Inc. | Pressure regulator |
GB2256288A (en) * | 1991-05-30 | 1992-12-02 | Coltec Ind Inc | Solenoid operated pressure regulating valve |
DE4211911A1 (en) * | 1991-05-30 | 1992-12-03 | Coltec Ind Inc | SOLENOID PRESSURE CONTROL VALVE |
GB2256288B (en) * | 1991-05-30 | 1994-09-28 | Coltec Ind Inc | Solenoid operated pressure regulating valve |
DE4211911C2 (en) * | 1991-05-30 | 1998-07-09 | Borg Warner Automotive | Solenoid operated pressure control valve |
WO2020032881A3 (en) * | 2018-03-15 | 2020-06-25 | Enginsu Rahmi | Three conic poppet directional control valve |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |