GB1484723A - Vehicle braking systems - Google Patents

Vehicle braking systems

Info

Publication number
GB1484723A
GB1484723A GB4781074A GB4781074A GB1484723A GB 1484723 A GB1484723 A GB 1484723A GB 4781074 A GB4781074 A GB 4781074A GB 4781074 A GB4781074 A GB 4781074A GB 1484723 A GB1484723 A GB 1484723A
Authority
GB
United Kingdom
Prior art keywords
spring
lever
plunger
load
acting
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
GB4781074A
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 GB503174A external-priority patent/GB1484722A/en
Application filed by Automotive Products PLC filed Critical Automotive Products PLC
Priority to GB4781074A priority Critical patent/GB1484723A/en
Publication of GB1484723A publication Critical patent/GB1484723A/en
Expired 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
    • B60T8/30—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 responsive to load
    • B60T8/306—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 responsive to load using hydraulic valves
    • 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

1484723 Load responsive brakes AUTOMOTIVE PRODUCTS Ltd 3 Feb 1975 [4 Feb 1974 21 June 1974] 47810/74 and 48002/74 Divided out of 1484722 Heading F2F A brake system comprising a load-responsive proportioning valve for a braking system includes a differential area plunger 12 on which liquid acts in a direction to move the plunger to close a passage interconnecting the two sides thereof, a lever system 14 acting on the plunger, a first spring 19 acting on the lever system to oppose the liquid pressure and a second spring 24 acting on the lever system in opposition to the first spring and so arranged so that its load varies in accordance with vehicle loading and having adjusting means to vary the spacing between the anchorages for the ends thereof for a given relative position of the vehicle body structure and the wheel mounting, the load of the second spring 24 being transmitted to the valve plunger or to an anchorage at its end opposite to that which is coupled to the lever system through abutment means 29, 31 which are free to separate when the spring reaches its fully relaxed position. In a modification, Fig. 5 there are two levers 41, 51 the lever 41 carrying an abutment screw 52 and the two levers normally moving as one but if the second spring 55 becomes fully relaxed the lever 51 can move away from the screw 52.
GB4781074A 1974-02-04 1975-02-03 Vehicle braking systems Expired GB1484723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4781074A GB1484723A (en) 1974-02-04 1975-02-03 Vehicle braking systems

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB503174A GB1484722A (en) 1974-02-04 1974-02-04 Vehicle braking systems
GB4800274 1974-06-21
GB2766274 1974-06-21
GB4781074A GB1484723A (en) 1974-02-04 1975-02-03 Vehicle braking systems

Publications (1)

Publication Number Publication Date
GB1484723A true GB1484723A (en) 1977-09-01

Family

ID=27447410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4781074A Expired GB1484723A (en) 1974-02-04 1975-02-03 Vehicle braking systems

Country Status (1)

Country Link
GB (1) GB1484723A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534208A1 (en) * 1982-10-11 1984-04-13 Fiat Auto Spa Brake pressure corrector for vehicle
WO1990006871A1 (en) * 1988-12-15 1990-06-28 Automotive Products Plc Vehicle braking systems

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534208A1 (en) * 1982-10-11 1984-04-13 Fiat Auto Spa Brake pressure corrector for vehicle
WO1990006871A1 (en) * 1988-12-15 1990-06-28 Automotive Products Plc Vehicle braking systems
GB2243888A (en) * 1988-12-15 1991-11-13 Automotive Products Plc Vehicle braking systems
GB2243888B (en) * 1988-12-15 1992-05-27 Automotive Products Plc Vehicle braking systems
US5236251A (en) * 1988-12-15 1993-08-17 Automotive Products, Plc Vehicle braking systems

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Legal Events

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