GB1254906A - Pilot operated unloading valve - Google Patents

Pilot operated unloading valve

Info

Publication number
GB1254906A
GB1254906A GB5588169A GB5588169A GB1254906A GB 1254906 A GB1254906 A GB 1254906A GB 5588169 A GB5588169 A GB 5588169A GB 5588169 A GB5588169 A GB 5588169A GB 1254906 A GB1254906 A GB 1254906A
Authority
GB
United Kingdom
Prior art keywords
valve
unloading valve
pressure
pilot operated
outlets
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
GB5588169A
Inventor
Robert Fraser Hodgson
Arthur James Williams
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.)
Commercial Shearing Inc
Commercial Shearing and Stamping Co
Original Assignee
Commercial Shearing Inc
Commercial Shearing and Stamping 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 Commercial Shearing Inc, Commercial Shearing and Stamping Co filed Critical Commercial Shearing Inc
Priority to GB5588169A priority Critical patent/GB1254906A/en
Publication of GB1254906A publication Critical patent/GB1254906A/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1,254,906. Fluid-pressure servomotor systems. COMMERCIAL SHEARING AND STAMPING CO. Nov. 14, 1969, No. 55881/69. Heading G3P. A pump unloading valve for use in a hydraulic system having widely varying pressure/flow requirements, comprises a block 10 provided with inlets 14, 24, outlets 18, 22 and an exhaust passage 49, which are inter-connected by pressure responsive valves 27, 35 and 61 arranged to divert the flow from inlet 24 to exhaust 49 according to the demands of the hydraulic system. The valve has a further exhaust passage 19 connected to outlets 18, 22 by a pressure responsive relief valve 21. The Specification describes in detail the operation of the valve feeding fluid to the rams of a front end loader.
GB5588169A 1969-11-14 1969-11-14 Pilot operated unloading valve Expired GB1254906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5588169A GB1254906A (en) 1969-11-14 1969-11-14 Pilot operated unloading valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5588169A GB1254906A (en) 1969-11-14 1969-11-14 Pilot operated unloading valve

Publications (1)

Publication Number Publication Date
GB1254906A true GB1254906A (en) 1971-11-24

Family

ID=10475110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5588169A Expired GB1254906A (en) 1969-11-14 1969-11-14 Pilot operated unloading valve

Country Status (1)

Country Link
GB (1) GB1254906A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030336A1 (en) * 1979-12-07 1981-06-17 Mannesmann Rexroth GmbH Pressure valve, especially pressure reducing valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030336A1 (en) * 1979-12-07 1981-06-17 Mannesmann Rexroth GmbH Pressure valve, especially pressure reducing valve

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