GB1355955A - Hydraulic power steering apparatus - Google Patents

Hydraulic power steering apparatus

Info

Publication number
GB1355955A
GB1355955A GB1355955DA GB1355955A GB 1355955 A GB1355955 A GB 1355955A GB 1355955D A GB1355955D A GB 1355955DA GB 1355955 A GB1355955 A GB 1355955A
Authority
GB
United Kingdom
Prior art keywords
valve
centre
ram
open
pump
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
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.)
TRW Steering Systems Ltd
Original Assignee
TRW Steering Systems 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 TRW Steering Systems Ltd filed Critical TRW Steering Systems Ltd
Publication of GB1355955A publication Critical patent/GB1355955A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Steering Controls (AREA)

Abstract

1355955 Power steering CAM GEARS Ltd 29 June 1971 [7 July 1970] 32940/70 Heading B7H Hydrostatic power steering apparatus having a steering ram M and an hydraulic pump PP may be provided with a manually operated valve V5 to selectively render the ram M open- or closed-centre according to terrain &c. The steering wheel SW operates a manual pump MP which meters fluid from a powered pump PP to the double-acting ram M via a linear or rotary valve V1 which is operated progressively by a torque sensitive element SM. A manually-operated valve V5 is provided which may interconnect the manual pump MP and the ram M as shown (open centre) or isolate them (closed centre). In order to permit the build up of hydraulic pressure in the ram M/ pump MP circuit, when open centre, a torque sensitive valve V4 is provided which progressively restricts the fluid interconnections as the torque in the steering shaft 1 increases. Valve V5 may be of the two-position type or may be variable to suit varying terrain conditions. Valve V5 may be spring-loaded and operated by the pressure differential between pipes 10 and 11 to either replace valve V4 or provide the change from open-centre to closed-centre in direct response to kick-back forces.
GB1355955D 1970-07-07 1970-07-07 Hydraulic power steering apparatus Expired GB1355955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3294070 1970-07-07

Publications (1)

Publication Number Publication Date
GB1355955A true GB1355955A (en) 1974-06-12

Family

ID=10346257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1355955D Expired GB1355955A (en) 1970-07-07 1970-07-07 Hydraulic power steering apparatus

Country Status (3)

Country Link
DE (1) DE2133884A1 (en)
FR (1) FR2100334A5 (en)
GB (1) GB1355955A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341159A (en) * 1998-07-31 2000-03-08 Ognibene Spa Hydrostatic steering system with selectable reactive and non-reactive modes
US6863147B2 (en) * 2002-05-27 2005-03-08 Ognibene S.P.A. Hydrostatic power steering device for fast steering
US7631590B2 (en) 2006-11-02 2009-12-15 Sauer-Danfoss Aps Hydraulic steering arrangement
US7789190B2 (en) * 2006-03-08 2010-09-07 Sauer-Danfoss Aps Hydraulic steering
US7997379B2 (en) 2006-03-08 2011-08-16 Sauer-Danfoss Aps Hydraulic steering
US9038762B2 (en) 2006-03-08 2015-05-26 Sauer-Danfoss Aps Hydraulic steering

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771846A (en) * 1986-09-22 1988-09-20 Trw Inc. Apparatus for establishing steering feel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341159A (en) * 1998-07-31 2000-03-08 Ognibene Spa Hydrostatic steering system with selectable reactive and non-reactive modes
GB2341159B (en) * 1998-07-31 2002-04-24 Ognibene Spa Hydrostatic steering system
US6863147B2 (en) * 2002-05-27 2005-03-08 Ognibene S.P.A. Hydrostatic power steering device for fast steering
US7789190B2 (en) * 2006-03-08 2010-09-07 Sauer-Danfoss Aps Hydraulic steering
US7997379B2 (en) 2006-03-08 2011-08-16 Sauer-Danfoss Aps Hydraulic steering
US9038762B2 (en) 2006-03-08 2015-05-26 Sauer-Danfoss Aps Hydraulic steering
US7631590B2 (en) 2006-11-02 2009-12-15 Sauer-Danfoss Aps Hydraulic steering arrangement

Also Published As

Publication number Publication date
FR2100334A5 (en) 1972-03-17
DE2133884A1 (en) 1972-02-03

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Legal Events

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