FR2290332A1 - Control valve for dual brake circuit - with floating stepped piston having reduced ends giving direct connection upon pressure failure - Google Patents

Control valve for dual brake circuit - with floating stepped piston having reduced ends giving direct connection upon pressure failure

Info

Publication number
FR2290332A1
FR2290332A1 FR7534505A FR7534505A FR2290332A1 FR 2290332 A1 FR2290332 A1 FR 2290332A1 FR 7534505 A FR7534505 A FR 7534505A FR 7534505 A FR7534505 A FR 7534505A FR 2290332 A1 FR2290332 A1 FR 2290332A1
Authority
FR
France
Prior art keywords
piston
control valve
brake circuit
direct connection
stepped piston
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.)
Withdrawn
Application number
FR7534505A
Other languages
French (fr)
Inventor
Alastair John Young
Eric Charles Hales
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.)
Automotive Products PLC
Original Assignee
Automotive Products 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
Priority claimed from GB48739/74A external-priority patent/GB1524189A/en
Priority claimed from GB4371/75A external-priority patent/GB1524190A/en
Application filed by Automotive Products PLC filed Critical Automotive Products PLC
Publication of FR2290332A1 publication Critical patent/FR2290332A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)

Abstract

The pressure control valve for the dual braking circuit has a stepped, floating piston with a wide middle section, and reduced end sections. The one end of the piston is fitted with the control spring to regulate the threshold pressure at which the valve starts to act. The front wheel brakes are connected across one end of the valve while the rear wheel brakes are connected across the stepped piston. In the event of failure in either brake circuit the piston is displaced to provide a straight through connection to both circuits, with the defective circuit closed off. The whole control is combined in a single valve housing for a simple layout.
FR7534505A 1974-11-11 1975-11-12 Control valve for dual brake circuit - with floating stepped piston having reduced ends giving direct connection upon pressure failure Withdrawn FR2290332A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB48739/74A GB1524189A (en) 1974-11-11 1974-11-11 Valve devices for use in liquid pressure braking systems of vehicles
GB4371/75A GB1524190A (en) 1975-01-31 1975-01-31 Valve devices for use in liquid pressure braking systems of vehicles

Publications (1)

Publication Number Publication Date
FR2290332A1 true FR2290332A1 (en) 1976-06-04

Family

ID=26239076

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7534505A Withdrawn FR2290332A1 (en) 1974-11-11 1975-11-12 Control valve for dual brake circuit - with floating stepped piston having reduced ends giving direct connection upon pressure failure

Country Status (3)

Country Link
JP (1) JPS5191476A (en)
DE (1) DE2550309A1 (en)
FR (1) FR2290332A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550503A1 (en) * 1983-08-11 1985-02-15 Bosch Gmbh Robert Load regulated rear brake valve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1524190A (en) * 1975-01-31 1978-09-06 Automotive Prod Co Ltd Valve devices for use in liquid pressure braking systems of vehicles

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1430484A (en) * 1965-02-18 1966-03-04 Kelsey Hayes Co Hydraulic brake systems incorporating a pressure regulating device
FR1535897A (en) * 1966-10-04 1968-08-09 Teves Kg Alfred Pressure regulating valve
FR1590233A (en) * 1967-10-24 1970-04-13
US3597015A (en) * 1970-01-26 1971-08-03 Wagner Electric Corp Control valve
FR2067046A1 (en) * 1969-11-08 1971-08-13 Gen Motors Corp
FR2068574A1 (en) * 1969-11-21 1971-08-27 Teves Gmbh Alfred
FR2150955A1 (en) * 1971-08-30 1973-04-13 Nissan Motor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1430484A (en) * 1965-02-18 1966-03-04 Kelsey Hayes Co Hydraulic brake systems incorporating a pressure regulating device
FR1535897A (en) * 1966-10-04 1968-08-09 Teves Kg Alfred Pressure regulating valve
FR1590233A (en) * 1967-10-24 1970-04-13
FR2067046A1 (en) * 1969-11-08 1971-08-13 Gen Motors Corp
FR2068574A1 (en) * 1969-11-21 1971-08-27 Teves Gmbh Alfred
US3597015A (en) * 1970-01-26 1971-08-03 Wagner Electric Corp Control valve
FR2150955A1 (en) * 1971-08-30 1973-04-13 Nissan Motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550503A1 (en) * 1983-08-11 1985-02-15 Bosch Gmbh Robert Load regulated rear brake valve

Also Published As

Publication number Publication date
DE2550309A1 (en) 1976-05-13
JPS5191476A (en) 1976-08-11

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BD Lapse confirmed
PC Appeal to the supreme court of appeal
AR Application made for restoration
DC Decision of the supreme court
DE Withdrawal due to an action of restoration