ES463613A1 - Hydraulic valve assembly - Google Patents

Hydraulic valve assembly

Info

Publication number
ES463613A1
ES463613A1 ES463613A ES463613A ES463613A1 ES 463613 A1 ES463613 A1 ES 463613A1 ES 463613 A ES463613 A ES 463613A ES 463613 A ES463613 A ES 463613A ES 463613 A1 ES463613 A1 ES 463613A1
Authority
ES
Spain
Prior art keywords
passage
fluid
initial
valve means
allow
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
ES463613A
Other languages
Spanish (es)
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.)
Ford Motor Co Ltd
Ford Motor Co
Original Assignee
Ford Motor Co Ltd
Ford Motor Co
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 Ford Motor Co Ltd, Ford Motor Co filed Critical Ford Motor Co Ltd
Publication of ES463613A1 publication Critical patent/ES463613A1/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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/005—Leakage; Spillage; Hose burst

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Multiple-Way Valves (AREA)
  • Safety Valves (AREA)

Abstract

Improvements in a hydraulic valve assembly, characterized in that the assembly comprises a unitary structure provided with initial and secondary steps for a connection at will through its respective flexible tubes and regulating valves to a source of pressurized fluid, a third and a fourth step to effect a connection to a hydraulically driven actuator, the initial valve means interconnecting the first and the third passage, the secondary valve means interconnecting the second and the fourth passage, the initial valve means being adapted to allow the free passage of the fluid from the initial passage to the third step and to allow the free passage of the fluid from the third passage to the initial passage only after the admission of a pilot pressure above a predetermined value, the secondary valve means being adapted to allow the free passage of the fluid from the fourth step to the second and for perm the free passage of the fluid from the second passage to the fourth when there is a predetermined pressure difference in that direction, and a pilot passage extending from said second passage to said initial valve to provide a fluid pressure that is a function of the existing pressure in the second step as the aforementioned pilot pressure. (Machine-translation by Google Translate, not legally binding)
ES463613A 1977-01-12 1977-10-27 Hydraulic valve assembly Expired ES463613A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB106677A GB1551481A (en) 1977-01-12 1977-01-12 Hydraulic valve assembly

Publications (1)

Publication Number Publication Date
ES463613A1 true ES463613A1 (en) 1979-01-01

Family

ID=9715595

Family Applications (1)

Application Number Title Priority Date Filing Date
ES463613A Expired ES463613A1 (en) 1977-01-12 1977-10-27 Hydraulic valve assembly

Country Status (6)

Country Link
CA (1) CA1090677A (en)
DE (1) DE2758074C2 (en)
ES (1) ES463613A1 (en)
FR (1) FR2377538A1 (en)
GB (1) GB1551481A (en)
SE (1) SE7712362L (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO761983L (en) * 1976-06-09 1977-12-12 Soeyland A S Broedr DEVICE FOR PROTECTION AGAINST WIRE BREAKING
DE3040529C2 (en) * 1980-10-28 1984-08-16 Hans Hermes Steuerungstechnik, 6981 Faulbach Safety valve
DE3216580A1 (en) * 1981-05-07 1983-02-24 Hiab-Foco AB, 82401 Hudiksvall Load-holding and load-lowering brake valve
DE3237103C3 (en) * 1982-10-07 1997-01-23 Wessel Hydraulik Safety valve as a load holding valve in the hoist hydraulics
IT213216Z2 (en) * 1987-05-15 1989-11-09 Oil Control Spa IMPROVEMENTS WITH HYDRAULIC CONTROL VALVE, IN PARTICULAR FOR HYDRAULIC CIRCUITS WITH DISTRIBUTOR EVEN WITH CLOSED CENTER
FR2623873A1 (en) * 1987-11-27 1989-06-02 Hey Rene Safety valve for maintaining the hydraulic or pneumatic pressure in an appliance chamber, in the event of a drop in the pressure in the pipe supplying the appliance
GB9111285D0 (en) * 1991-05-24 1991-07-17 Translift Material Handling Narrow aisle lift truck
DE102015005624A1 (en) * 2015-04-30 2016-11-03 Hydac Fluidtechnik Gmbh safety device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1405450A (en) * 1964-05-26 1965-07-09 Bennes Marrel Improvements to brake valve devices for controlling hydraulic circuits
US3595264A (en) * 1970-01-09 1971-07-27 Parker Hannifin Corp Load control and holding valve

Also Published As

Publication number Publication date
FR2377538B1 (en) 1980-10-03
DE2758074A1 (en) 1978-07-13
GB1551481A (en) 1979-08-30
CA1090677A (en) 1980-12-02
DE2758074C2 (en) 1985-08-14
FR2377538A1 (en) 1978-08-11
SE7712362L (en) 1978-07-13

Similar Documents

Publication Publication Date Title
SE7700887L (en) CONTROL VALVE WITH HYDRAULIC LOADING
ES463613A1 (en) Hydraulic valve assembly
GB1469918A (en) Fast exhaust circuit for hydraulic jacks
SE8106632L (en) HYDRAULIC CONTROL SYSTEM
FR2372115A1 (en) Hydraulic lifting arrangement with series connected cylinders - has leakage control valve system ensuring synchronous action of pistons
JPS5747240A (en) Two system hydraulic pressure control valve
ES321923A1 (en) A hydraulic fixing unit. (Machine-translation by Google Translate, not legally binding)
FR2375651A1 (en) PRESSURE ADJUSTMENT VALVE
ES480099A1 (en) Arrangement for a hydraulic brake booster
KR830005508A (en) Electro-Hydraulic Servo Actuator System
FR2384188A1 (en) Flow force reduction for hydraulic valve - has step of smaller dia. than outside dia. of control piston arranged close to control edge
NL7706378A (en) LOAD RESPONDING PRESSURE REDUCING VALVE ASSEMBLY FOR A HYDRAULIC BRAKE SYSTEM.
ES385029A1 (en) Valves
EP0077203A3 (en) Fluid flow control valve
CA1019222A (en) Pressure compensating valve mechanism for hydraulic control valves
SE7905021L (en) AUTOMATIC CONNECTION VALVE FOR HYDRAULIC SYSTEM
JPS52151903A (en) Hydraulic device
FR2417663A1 (en) Hydraulic jack for tilting cab in lorry - has servo-operated fluid control valve with release by fluid pressure on piston
JPS5370282A (en) Multi-step oil hydraulic servo valve
ES8305478A1 (en) Rapid motion type two-stage fluid pressure solenoid valve
GB581925A (en) Improvements in and relating to remote control systems
ES194540U (en) Automatic valve, especially regulator valve for hydraulic systems. (Machine-translation by Google Translate, not legally binding)
ES465654A1 (en) A valve of maneuver, operated by auxiliary fluid (Machine-translation by Google Translate, not legally binding)
JPS5683575A (en) Protective system for hydraulic machine
JPS55152902A (en) High-pressure servovalve