GB1444019A - Stability means for a controller for fluid pressure operated de vices - Google Patents

Stability means for a controller for fluid pressure operated de vices

Info

Publication number
GB1444019A
GB1444019A GB4960273A GB4960273A GB1444019A GB 1444019 A GB1444019 A GB 1444019A GB 4960273 A GB4960273 A GB 4960273A GB 4960273 A GB4960273 A GB 4960273A GB 1444019 A GB1444019 A GB 1444019A
Authority
GB
United Kingdom
Prior art keywords
spool
sleeve
apertures
slots
neutral position
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
GB4960273A
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.)
Eaton Corp
Original Assignee
Eaton 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 Eaton Corp filed Critical Eaton Corp
Publication of GB1444019A publication Critical patent/GB1444019A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/09—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
    • B62D5/093—Telemotor driven by steering wheel movement
    • B62D5/097—Telemotor driven by steering wheel movement gerotor type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86638—Rotary valve
    • Y10T137/86646—Plug type
    • Y10T137/86662—Axial and radial flow

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Servomotors (AREA)

Abstract

1444019 Power-assisted steering mechanism EATON CORP 24 Oct 1973 [24 Oct 1972] 49602/73 Heading B7H In a hydrostatic steering controller comprising a valve sleeve 12 having apertures 20 which co-operate with slots 18 in a valve spool 10 when the spool is in a neutral position with respect to the sleeve to provide a fluid flow path between an inlet port 72 and an outlet port 73, augmentation orifices 16 are provided in the sleeve 10 adjacent the apertures 20 to stabilise pressure changes when the spool and sleeve are relatively roted from the neutral to an actuated position. The apertures 20 in the sleeve 12 include charging apertures 128, two rows of circular apertures 132, and two rows of gain holes 136 axially aligned with the apertures 132. The slots 18 in the spool 10 include charging slots 18 which are aligned with the neutral position with the charging apertures 128, and stability slots 133 having a width at one end 135 equal to the diameter of the circular apertures 132 and at the other end 137 equal to the diameter of the gain holes 136. The augmentation orifices 16 are the same size as the gain holes 136 and are positioned one on each side of each gain hole by such a distance that they cooperate with the stability slots 133 as the spool and sleeve are displaced from the neutral position to modify the closing rate of the fluid flow path. Circumferential grooves 122, 124 and discontinuous axial grooves 131 are formed in the spool 10 as described in Specification 48048/75 to balance pressures acting around the spool and maintain the spool centrally disposed within the sleeve 12. The spool 10 has splines at one end 97 for connection to a steering wheel shaft, and the sleeve 12 is connected by a drive pin 102 and wobble shaft 57 to a geroter pump/motor unit B. The drive pin 102 is received by slots 103 in the spool 10 with sufficient clearance to allow limited relative rotation which is resisted by leaf springs 106. Slots 112, 114, 116 and 118 in the spool 10 and apertures 113, 117, 119 in the sleeve 12 cooperate upon relative rotation of spool and sleeve from the neutral position so that fluid from the inlet port 72 is directed to one of steering motor ports 74, 75 by way of the pump/ motor unit B and fluid is returned from the other motor port 74, 75 to the outlet port 73.
GB4960273A 1972-10-24 1973-10-24 Stability means for a controller for fluid pressure operated de vices Expired GB1444019A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30003772 US3819307A (en) 1972-10-24 1972-10-24 Stability means for a controller for fluid pressure operated devices

Publications (1)

Publication Number Publication Date
GB1444019A true GB1444019A (en) 1976-07-28

Family

ID=23157418

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4960273A Expired GB1444019A (en) 1972-10-24 1973-10-24 Stability means for a controller for fluid pressure operated de vices
GB4804875A Expired GB1444020A (en) 1972-10-24 1973-10-24 Controller for fluid pressure operated devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4804875A Expired GB1444020A (en) 1972-10-24 1973-10-24 Controller for fluid pressure operated devices

Country Status (9)

Country Link
US (1) US3819307A (en)
JP (1) JPS4994028A (en)
AU (1) AU471180B2 (en)
BR (1) BR7308320D0 (en)
CA (1) CA962550A (en)
DE (1) DE2353068A1 (en)
FR (1) FR2203953A1 (en)
GB (2) GB1444019A (en)
IT (1) IT998896B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917298A1 (en) * 1979-04-28 1980-10-30 Zahnradfabrik Friedrichshafen CONTROL ROTARY VALVE DEVICE
DE2917435A1 (en) * 1979-04-28 1980-10-30 Zahnradfabrik Friedrichshafen CONTROL ROTARY VALVE DEVICE
GB2254300A (en) * 1991-03-09 1992-10-07 Danfoss As Control assembly for a fully-hydraulic steering unit.
GB2341158A (en) * 1998-07-31 2000-03-08 Ognibene Spa Rotary distributor valve with variable choking for power steering

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895888A (en) * 1973-10-19 1975-07-22 Trw Inc Hydrostatic control unit
GB1524707A (en) * 1974-09-18 1978-09-13 Eaton Corp Controller for fluid pressure operated devices
US3960234A (en) * 1974-09-18 1976-06-01 Eaton Corporation Controller for fluid pressure operated devices providing high pressure to an auxiliary device
US4033377A (en) * 1974-09-18 1977-07-05 Eaton Corporation Controller for fluid pressure operated devices
HU170933B (en) * 1975-04-01 1977-10-28 Autoipari Kutato Intezet Port control particularly for power assisted steering unit of auto
US4109679A (en) * 1976-04-23 1978-08-29 Eaton Corporation Controller for fluid pressure operated devices
IT1077304B (en) * 1976-06-23 1985-05-04 Eaton Corp REGULATOR FOR DEVICES OPERATED BY THE PRESSURE OF A FLUID
DE2633011C3 (en) * 1976-07-22 1979-07-26 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Hydrostatic power steering, in particular for motor vehicles
US4096883A (en) * 1976-08-24 1978-06-27 Eaton Corporation Closed-center controller and neutral bypass arrangement therefor
CA1059440A (en) * 1977-01-24 1979-07-31 Oliver W. Johnson Controller for fluid pressure operated devices
DE2814230C3 (en) * 1978-04-03 1980-09-18 Danfoss A/S, Nordborg (Daenemark) Spring arrangement for centering a rotary slide control valve of a hydrostatic steering unit
DE2906183C2 (en) * 1979-02-17 1986-09-18 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Hydrostatic steering device for automobiles
DE2944883C2 (en) * 1979-11-07 1982-08-26 Danfoss A/S, 6430 Nordborg Hydrostatic steering device
DE2952674C2 (en) * 1979-12-28 1983-03-24 Danfoss A/S, 6430 Nordborg Hydraulic steering device
US4336687A (en) * 1980-04-21 1982-06-29 Eaton Corporation Load sensing controller
DE3126040C2 (en) * 1981-07-02 1985-12-12 Danfoss A/S, Nordborg Hydraulic control device
US4462774A (en) * 1982-09-27 1984-07-31 William Hotine Rotary expander fluid pressure device
DE3302001C2 (en) * 1983-01-21 1985-05-09 Danfoss A/S, Nordborg Rotary valve for a hydrostatic steering unit for vehicles
GB2144379B (en) * 1983-08-05 1987-05-20 Cam Gears Ltd Power steering valve and method of making the same
DE3504993A1 (en) * 1985-02-14 1986-08-14 Danfoss A/S, Nordborg CONTROL UNIT FOR HYDROSTATIC AUXILIARY STEERING DEVICES
DE3789189T2 (en) * 1986-10-10 1994-06-01 Eaton Corp Fluid control and damped fluid path.
JP2532079B2 (en) * 1987-01-30 1996-09-11 日産自動車株式会社 Rotary control valve for power steering
DE3710817A1 (en) * 1987-04-01 1988-10-20 Rexroth Mannesmann Gmbh ROTARY PISTON MACHINE, IN PARTICULAR GEAR RING MACHINE
US4862690A (en) * 1988-10-06 1989-09-05 Eaton Corporation Steering control unit with both flow amplification and manual steering capability
US5161577A (en) * 1990-04-23 1992-11-10 Eaton Corporation Fluid controller having rotary/axial valving, and spring arrangement therefor
US5080135A (en) * 1990-10-24 1992-01-14 Eaton Corporation Large deflection angle rotary modulation steering valve
DE4204336C2 (en) * 1992-02-14 1995-07-06 Hydraulik Nord Gmbh Hydrostatic steering device
DE10025509B4 (en) * 2000-05-23 2004-08-19 Sauer-Danfoss Holding Aps Rotary slide set for a hydraulic control device
ITRE20020049A1 (en) * 2002-05-27 2003-11-27 Ognibene Spa HYDROSTATIC GUIDE FOR QUICK STEERING
DE102006026394A1 (en) * 2005-06-10 2007-02-08 Sauer-Danfoss Aps Fluid regulator for e.g. steering system in motor vehicles has two groups of measuring openings that form fluid connection between valve body and volume chambers of measuring motor
US7984785B2 (en) 2008-02-28 2011-07-26 Eaton Corporation Control valve assembly for electro-hydraulic steering system
US7931112B2 (en) * 2008-05-02 2011-04-26 Eaton Corporation Isolation valve for a load-reaction steering system
DE102010050137B3 (en) * 2010-11-03 2013-01-31 Sauer-Danfoss Aps Control device for a hydrostatic steering motor
EP2610142B1 (en) * 2011-12-27 2014-03-05 Sauer-Danfoss ApS Hydraulic steering device
ITRE20120014A1 (en) * 2012-02-28 2013-08-29 Ognibene Power Spa DISTRIBUTOR DEVICE FOR DRIVING
CN104813038B (en) * 2012-10-24 2018-06-29 大卫·保罗·史密斯 There is electro-hydraulic decompression and the relief valve of mobilization force control for big flow capacity
US9435446B1 (en) * 2014-07-24 2016-09-06 Google Inc. Rotary valve with brake mode
DE102020106440A1 (en) * 2020-03-10 2021-09-16 Danfoss Power Solutions Aps Hydraulic steering unit
DE102020106437A1 (en) 2020-03-10 2021-09-16 Danfoss Power Solutions Aps Fluid control device, in particular as part of a hydraulic steering unit
DE102020106438B4 (en) * 2020-03-10 2022-03-31 Danfoss Power Solutions Aps Fluid control device, in particular as part of a hydraulic steering unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US25126A (en) * 1859-08-16 Churn
DE1550187B1 (en) * 1966-06-07 1970-05-06 Danfoss As Four-way switch valve for hydraulic systems
DE1755387C3 (en) * 1968-05-03 1973-11-08 Danfoss A/S, Nordborg (Daenemark) Hydrostatic steering device, especially for heavy vehicles
DE1755460C2 (en) * 1968-05-11 1986-08-07 Danfoss A/S, Nordborg Hydrostatic control device, in particular for steering
US3528521A (en) * 1968-06-13 1970-09-15 Allis Chalmers Mfg Co Hydraulic steering system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917298A1 (en) * 1979-04-28 1980-10-30 Zahnradfabrik Friedrichshafen CONTROL ROTARY VALVE DEVICE
DE2917435A1 (en) * 1979-04-28 1980-10-30 Zahnradfabrik Friedrichshafen CONTROL ROTARY VALVE DEVICE
GB2254300A (en) * 1991-03-09 1992-10-07 Danfoss As Control assembly for a fully-hydraulic steering unit.
GB2254300B (en) * 1991-03-09 1994-08-03 Danfoss As Control assembly for a fully-hydraulic steering unit
GB2341158A (en) * 1998-07-31 2000-03-08 Ognibene Spa Rotary distributor valve with variable choking for power steering
GB2341158B (en) * 1998-07-31 2002-04-17 Ognibene Spa Rotory distributor with variable choking, for power or hydrostatic steering systems

Also Published As

Publication number Publication date
JPS4994028A (en) 1974-09-06
US3819307A (en) 1974-06-25
AU471180B2 (en) 1976-04-08
BR7308320D0 (en) 1974-08-22
IT998896B (en) 1976-02-20
AU6171473A (en) 1975-04-24
FR2203953A1 (en) 1974-05-17
DE2353068A1 (en) 1974-05-02
GB1444020A (en) 1976-07-28
CA962550A (en) 1975-02-11

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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