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GB1484990A - Hydraulic systems - Google Patents

Hydraulic systems

Info

Publication number
GB1484990A
GB1484990A GB3585073A GB3585073A GB1484990A GB 1484990 A GB1484990 A GB 1484990A GB 3585073 A GB3585073 A GB 3585073A GB 3585073 A GB3585073 A GB 3585073A GB 1484990 A GB1484990 A GB 1484990A
Authority
GB
United Kingdom
Prior art keywords
orifice
load
mechanisms
adjusts
sleeve
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
GB3585073A
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB3585073A priority Critical patent/GB1484990A/en
Publication of GB1484990A publication Critical patent/GB1484990A/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
    • F15B11/22—Synchronisation of the movement of two or more servomotors

Landscapes

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

Abstract

1484990 Fluid-pressure control circuits SMITHS INDUSTRIES Ltd 4 Oct 1974 35850/73 Heading F1P [Also in Division F2] Lifting mechanisms 10-13 are raised at equal rates even when a load is unevenly distributed between them by supplying each mechanism through a flow regulator 23. Check valves 22 prevent flow from one mechanism to another. Similar regulators 27 and check valves 28 control the mechanisms when the load is lowered. To regulate the flow during raising of the load, the pressure drop across an orifice 57 in each regulator 23 adjusts a sleeve 53 against a spring 59 and hence the degree of alignment between apertures 54, 62, the check valve 22 being arranged upstream of the orifice. During lowering, the pressure drop across an orifice 58 adjusts the sleeve and the check valve 28 is opened. The mechanisms may support a demountable body on a commercial vehicle.
GB3585073A 1974-10-04 1974-10-04 Hydraulic systems Expired GB1484990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3585073A GB1484990A (en) 1974-10-04 1974-10-04 Hydraulic systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3585073A GB1484990A (en) 1974-10-04 1974-10-04 Hydraulic systems

Publications (1)

Publication Number Publication Date
GB1484990A true GB1484990A (en) 1977-09-08

Family

ID=10382215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3585073A Expired GB1484990A (en) 1974-10-04 1974-10-04 Hydraulic systems

Country Status (1)

Country Link
GB (1) GB1484990A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003196A1 (en) * 1978-01-16 1979-07-25 Regie Nationale Des Usines Renault Modular element for hydraulic flow distributor
FR2540193A1 (en) * 1983-02-01 1984-08-03 Danuvia Koezponti Szerszam HYDRAULIC DIVIDING AND FLOW SWITCHING APPARATUS FOR TWO OR MORE CONSUMER APPARATUSES
GB2233044A (en) * 1989-03-23 1991-01-02 Versa Technologies Inc Trailer lifting and lowering system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003196A1 (en) * 1978-01-16 1979-07-25 Regie Nationale Des Usines Renault Modular element for hydraulic flow distributor
FR2414674A1 (en) * 1978-01-16 1979-08-10 Renault MODULAR ELEMENT FOR HYDRAULIC FLOW DISTRIBUTION BLOCK
FR2540193A1 (en) * 1983-02-01 1984-08-03 Danuvia Koezponti Szerszam HYDRAULIC DIVIDING AND FLOW SWITCHING APPARATUS FOR TWO OR MORE CONSUMER APPARATUSES
GB2233044A (en) * 1989-03-23 1991-01-02 Versa Technologies Inc Trailer lifting and lowering system
GB2233044B (en) * 1989-03-23 1993-03-24 Versa Technologies Inc Trailer lifting and lowering system

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee