GB1152771A – Hydraeric Control System
– Google Patents
GB1152771A – Hydraeric Control System
– Google Patents
Hydraeric Control System
Info
Publication number
GB1152771A
GB1152771A
GB36583/66A
GB3658366A
GB1152771A
GB 1152771 A
GB1152771 A
GB 1152771A
GB 36583/66 A
GB36583/66 A
GB 36583/66A
GB 3658366 A
GB3658366 A
GB 3658366A
GB 1152771 A
GB1152771 A
GB 1152771A
Authority
GB
United Kingdom
Prior art keywords
servovalve
spool
conduits
pressure
valves
Prior art date
1965-08-23
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
GB36583/66A
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.)
Bell Aerospace Corp
Original Assignee
Bell Aerospace Corp
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.)
1965-08-23
Filing date
1966-08-16
Publication date
1969-05-21
1966-08-16
Application filed by Bell Aerospace Corp
filed
Critical
Bell Aerospace Corp
1969-05-21
Publication of GB1152771A
publication
Critical
patent/GB1152771A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
F15B18/00—Parallel arrangements of independent servomotor systems
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
F15B13/0401—Valve members; Fluid interconnections therefor
F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
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
F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
F15B20/008—Valve failure
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
F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
F16K31/00—Actuating devices; Operating means; Releasing devices
F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
Abstract
1,152,771. Fluid-pressure servomotor systems. BELL AEROSPACE CORP. Aug. 16, 1966 [Aug. 23, 1965], No.36583/66. Headine G3P. A fluid control system comprises an active servovalve 41, a stand-by servovalve 51 and a monitor servovalve 61. The valves are similar and comprise a flapper 104, movable in response to an electrical input, to actuate a spool valve 109, a spring 113 providing a feedback. The position of the spool 109 moves a flapper 115 to provide a fluid signal proportional to the spool position. The spool positions are compared in pairs by comparators 71, 72, 73 each of which comprises a valve spool loaded to the central position by springs and subjected at opposite ends to the pressures from two flappers. Each comparator controls a pressure release valve 132, 142, 152 which normally connects conduits 76, 77, 78 to a pressure supply but closes the connection to supply when the comparators connect these conduits to drain. The conduits 76, 77 are connected to chambers of switching valves 135, 136 and the conduit 78 to an actuating chamber 219 of switching valve 136. The various valves and actuator chambers are connected to the pressure supplies P 1 , P 2 , P 3 in the manner indicated, these supplies being those to the servovalves 41, 51, 61. In operation an input signal is fed to the servovalve and if the system is functioning normally the valves are in the position shown in which spool 109 of the active servovalve 41 controls the movements of the actuator 47. If the servovalve 41 fails, comparators 71, and 72 are subjected to a pressure differential which causes the conduits 76, 77 to be connected to the reservoir R 1 and the valves 132, 142 close. The fall of pressure in conduits 77, 76 also cause the switching valve 135 to move to the right to connect the actuator conduits to reservoir and also close the conduits from spool 109 of servovalve 41 while the switching valve 136 also moves to the right whereby the actuator 47 is controlled by the spool of stand-by servovalve 51. The Specification also describes an arrangement of two monitor servovalves where only two separate pressure supplies are necessary.
GB36583/66A
1965-08-23
1966-08-16
Hydraeric Control System
Expired
GB1152771A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US481981A
US3391611A
(en)
1965-08-23
1965-08-23
Hydraeric control system
Publications (1)
Publication Number
Publication Date
GB1152771A
true
GB1152771A
(en)
1969-05-21
Family
ID=23914165
Family Applications (4)
Application Number
Title
Priority Date
Filing Date
GB10713/68A
Expired
GB1152772A
(en)
1965-08-23
1966-08-16
A Comparator Valve for Sensing Hydraeric Pressure Differentials
GB10715/68A
Expired
GB1152774A
(en)
1965-08-23
1966-08-16
A Shut-Off Valve
GB36583/66A
Expired
GB1152771A
(en)
1965-08-23
1966-08-16
Hydraeric Control System
GB10714/68A
Expired
GB1152773A
(en)
1965-08-23
1966-08-16
A Pressure Operated Valve for Controlling the Flow of Hydraeric Fluid
Family Applications Before (2)
Application Number
Title
Priority Date
Filing Date
GB10713/68A
Expired
GB1152772A
(en)
1965-08-23
1966-08-16
A Comparator Valve for Sensing Hydraeric Pressure Differentials
GB10715/68A
Expired
GB1152774A
(en)
1965-08-23
1966-08-16
A Shut-Off Valve
Family Applications After (1)
Application Number
Title
Priority Date
Filing Date
GB10714/68A
Expired
GB1152773A
(en)
1965-08-23
1966-08-16
A Pressure Operated Valve for Controlling the Flow of Hydraeric Fluid
Country Status (2)
Country
Link
US
(1)
US3391611A
(en)
GB
(4)
GB1152772A
(en)
Families Citing this family (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3482486A
(en)
*
1967-11-29
1969-12-09
United Aircraft Corp
Redundant control method and apparatus
US3570516A
(en)
*
1969-03-07
1971-03-16
Bell Aerospace Corp
Latching comparator
US4054154A
(en)
*
1969-11-26
1977-10-18
Textron Inc.
Self monitoring redundant hydraeric control system
DE2041681C2
(en)
*
1970-08-21
1978-06-22
Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen
Method and device for the electrohydraulic control of a hydraulic actuator
US3987702A
(en)
*
1970-08-21
1976-10-26
Messerschmitt-Bolkow-Blohm Gmbh
Method and device for electrohydraulic control of a hydraulic actuator
DE2734851A1
(en)
*
1977-08-02
1979-02-15
Textron Inc
Redundant pressure medium control system – has several control channels each with individual medium source control valve and monitor valve
US4232699A
(en)
*
1979-01-12
1980-11-11
Textron Inc.
Hydro-mechanical failure detection and latching apparatus
US4244277A
(en)
*
1979-03-02
1981-01-13
Parker-Hannifin Corporation
Redundant servo with fail-safe electric system
US7455074B2
(en)
*
2005-07-28
2008-11-25
Honeywell International Inc.
Latchable electrohydraulic servovalve
Family Cites Families (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3027878A
(en)
*
1959-06-10
1962-04-03
Honeywell Regulator Co
Fluid motor control apparatus
US2995014A
(en)
*
1960-04-26
1961-08-08
Bell Aerospace Corp
Dual electro-hydraulic servo actuator system
US3143042A
(en)
*
1960-12-30
1964-08-04
Honeywell Regulator Co
Electro-hydraulic servomotor
US3190185A
(en)
*
1961-07-11
1965-06-22
Honeywell Inc
Servomotor with monitor
US3120787A
(en)
*
1963-01-11
1964-02-11
Vernon R Schmitt
Dual flight control system
US3222993A
(en)
*
1964-03-20
1965-12-14
Honeywell Inc
Control apparatus
US3270623A
(en)
*
1964-04-13
1966-09-06
Moog Inc
Fluid powered servomechanism of a redundant, monitor type
US3295420A
(en)
*
1964-12-14
1967-01-03
Boeing Co
Hydraulic actuator
1965
1965-08-23
US
US481981A
patent/US3391611A/en
not_active
Expired – Lifetime
1966
1966-08-16
GB
GB10713/68A
patent/GB1152772A/en
not_active
Expired
1966-08-16
GB
GB10715/68A
patent/GB1152774A/en
not_active
Expired
1966-08-16
GB
GB36583/66A
patent/GB1152771A/en
not_active
Expired
1966-08-16
GB
GB10714/68A
patent/GB1152773A/en
not_active
Expired
Also Published As
Publication number
Publication date
US3391611A
(en)
1968-07-09
GB1152773A
(en)
1969-05-21
GB1152772A
(en)
1969-05-21
GB1152774A
(en)
1969-05-21
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Legal Events
Date
Code
Title
Description
1969-10-01
PS
Patent sealed [section 19, patents act 1949]
1981-03-25
PCNP
Patent ceased through non-payment of renewal fee
