GB1496141A - Hydraulic systems - Google Patents

Hydraulic systems

Info

Publication number
GB1496141A
GB1496141A GB2313374A GB2313374A GB1496141A GB 1496141 A GB1496141 A GB 1496141A GB 2313374 A GB2313374 A GB 2313374A GB 2313374 A GB2313374 A GB 2313374A GB 1496141 A GB1496141 A GB 1496141A
Authority
GB
United Kingdom
Prior art keywords
piston
accordance
pressure
spring
hydraulic systems
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
GB2313374A
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.)
PRIESTMAN BROS Ltd
Original Assignee
PRIESTMAN BROS Ltd
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 PRIESTMAN BROS Ltd filed Critical PRIESTMAN BROS Ltd
Priority to GB2313374A priority Critical patent/GB1496141A/en
Publication of GB1496141A publication Critical patent/GB1496141A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
    • F16H61/448—Control circuits for tandem pumps or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

1496141 Fluid-pressure servomotor systems PRIESTMAN BROS Ltd 22 April 1975 [23 May 1974] 23133/74 Heading G3P Servomotors 3 controlling variable capacity pumps 1 are each positioned in accordance with the manual displacement of a valve 7 and the pressure of the fluid supplied to the valves 7 is limited by a relief valve 12 on which the spring loading 24 is set in accordance with the sum of the pressures in the pump output lines 6 by a piston 17. The lines communicate with separate working surfaces 19, 20 on the piston which is connected to the spring by a lever 22.
GB2313374A 1975-04-22 1975-04-22 Hydraulic systems Expired GB1496141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2313374A GB1496141A (en) 1975-04-22 1975-04-22 Hydraulic systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2313374A GB1496141A (en) 1975-04-22 1975-04-22 Hydraulic systems

Publications (1)

Publication Number Publication Date
GB1496141A true GB1496141A (en) 1977-12-30

Family

ID=10190675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2313374A Expired GB1496141A (en) 1975-04-22 1975-04-22 Hydraulic systems

Country Status (1)

Country Link
GB (1) GB1496141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043459A2 (en) * 1980-06-28 1982-01-13 Linde Aktiengesellschaft Control device for a set of several pumps driven by a common energy source

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043459A2 (en) * 1980-06-28 1982-01-13 Linde Aktiengesellschaft Control device for a set of several pumps driven by a common energy source
EP0043459A3 (en) * 1980-06-28 1982-01-20 Linde Aktiengesellschaft Control device for a set of several pumps driven by a common energy source

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee