GB1335905A - Variable displacement hydraulic pumps and motors - Google Patents

Variable displacement hydraulic pumps and motors

Info

Publication number
GB1335905A
GB1335905A GB2395671*A GB2395671A GB1335905A GB 1335905 A GB1335905 A GB 1335905A GB 2395671 A GB2395671 A GB 2395671A GB 1335905 A GB1335905 A GB 1335905A
Authority
GB
United Kingdom
Prior art keywords
valve
pressure
pump
servovalves
motor
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
GB2395671*A
Other languages
English (en)
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.)
Unisys Corp
Original Assignee
Sperry Rand 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.)
Filing date
Publication date
Application filed by Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB1335905A publication Critical patent/GB1335905A/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
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • 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
    • F16H61/439—Control of the neutral position, e.g. by zero tilt rotation holding means
    • 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
    • F16H61/46—Automatic regulation in accordance with output requirements
    • F16H61/478—Automatic regulation in accordance with output requirements for preventing overload, e.g. high pressure limitation
    • 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
    • F16H61/423—Motor capacity control by fluid pressure control means
    • 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
    • F16H61/433—Pump capacity control by fluid pressure control means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Gearings (AREA)
  • Fluid-Pressure Circuits (AREA)
GB2395671*A 1970-03-16 1971-04-19 Variable displacement hydraulic pumps and motors Expired GB1335905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1957570A 1970-03-16 1970-03-16

Publications (1)

Publication Number Publication Date
GB1335905A true GB1335905A (en) 1973-10-31

Family

ID=21793936

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2395671*A Expired GB1335905A (en) 1970-03-16 1971-04-19 Variable displacement hydraulic pumps and motors

Country Status (7)

Country Link
US (1) US3606755A (enExample)
JP (1) JPS56133988U (enExample)
CA (1) CA923017A (enExample)
DE (1) DE2112382C3 (enExample)
FR (1) FR2083308B1 (enExample)
GB (1) GB1335905A (enExample)
SE (1) SE367240B (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2231421C3 (de) * 1972-06-27 1981-04-23 Robert Bosch Gmbh, 7000 Stuttgart Hydrostatisches Getriebe
US3803987A (en) * 1972-11-14 1974-04-16 Abex Corp Servoactuated hydraulic transducer apparatus
US4034564A (en) * 1976-01-23 1977-07-12 Caterpillar Tractor Co. Piston pump assembly having load responsive controls
US4116002A (en) * 1977-08-22 1978-09-26 Eaton Corporation Control for a variable displacement pump or motor
US4355506A (en) * 1977-08-26 1982-10-26 Leonard Willie B Pump-motor power limiter and pressure relief
DE2739968A1 (de) * 1977-09-06 1979-03-15 Heinrich Prof Dr Ing Nikolaus Antriebssystem mit hydrostatischer kraftuebertragung
US4167855A (en) * 1978-05-18 1979-09-18 Eaton Corporation Hydrostatic transmission control system for improved hillside operation
US4274257A (en) * 1979-01-08 1981-06-23 Eaton Corporation Anti-stall controller
US4480438A (en) * 1982-01-20 1984-11-06 Vickers, Incorporated Power transmission
DE102007047195A1 (de) * 2007-10-02 2009-04-09 Zf Friedrichshafen Ag Verstellvorrichtung des Hubvolumens von hydraulischen Kolbenmaschinen

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1453656A1 (de) * 1951-01-28 1969-04-30 Fritz Stumpmeier Universal-Steuer- und Regelglied fuer foerderstromveraenderliche Pumpen
DE1158999B (de) * 1955-11-19 1963-12-12 Der Ludwig Von Roll Schen Eise Selbsttaetige Regelvorrichtung fuer ein hydrostatisches Getriebe eines Fahrzeuges, insbesondere Schienenfahrzeuges
DE1154689B (de) * 1960-07-09 1963-09-19 Linde Eismasch Ag Einrichtung zum Steuern einer stufenlos regelbaren hydrostatischen Einheit
FR1317547A (fr) * 1961-03-13 1963-05-08 Sundstrand Ag Transmission hydraulique de vehicule
US3166891A (en) * 1963-07-08 1965-01-26 New York Air Brake Co Hydrostatic transmission
US3230699A (en) * 1964-01-21 1966-01-25 Sundstrand Corp Hydrostatic transmission
US3247669A (en) * 1964-04-23 1966-04-26 Sundstrand Corp Hydrostatic transmission
US3238724A (en) * 1965-01-07 1966-03-08 Cessna Aircraft Co Control for hydrostatic transmissions
US3412683A (en) * 1966-08-25 1968-11-26 Ulrich Mfg Co Hydraulic system control
US3411297A (en) * 1967-03-20 1968-11-19 Sundstrand Corp Hydrostatic transmission
US3477225A (en) * 1967-06-14 1969-11-11 Caterpillar Tractor Co Hydrostatic transmission control system
US3528243A (en) * 1967-06-14 1970-09-15 Caterpillar Tractor Co Relief and replenish package for a hydrostatic transmission
JPS4838145U (enExample) * 1971-09-04 1973-05-10

Also Published As

Publication number Publication date
SE367240B (enExample) 1974-05-20
FR2083308B1 (enExample) 1975-06-06
US3606755A (en) 1971-09-21
CA923017A (en) 1973-03-20
JPS56133988U (enExample) 1981-10-12
DE2112382C3 (de) 1983-12-22
DE2112382A1 (de) 1971-09-30
FR2083308A1 (enExample) 1971-12-17
DE2112382B2 (de) 1977-12-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee