GB1365339A - Differential protection valve for vehicle braking systems - Google Patents

Differential protection valve for vehicle braking systems

Info

Publication number
GB1365339A
GB1365339A GB4785771A GB4785771A GB1365339A GB 1365339 A GB1365339 A GB 1365339A GB 4785771 A GB4785771 A GB 4785771A GB 4785771 A GB4785771 A GB 4785771A GB 1365339 A GB1365339 A GB 1365339A
Authority
GB
United Kingdom
Prior art keywords
service
line
inlet
valve
valve head
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
GB4785771A
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.)
Wabco Automotive UK Ltd
Original Assignee
Clayton Dewandre Co 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 Clayton Dewandre Co Ltd filed Critical Clayton Dewandre Co Ltd
Priority to GB4785771A priority Critical patent/GB1365339A/en
Priority to DE19722250204 priority patent/DE2250204A1/en
Publication of GB1365339A publication Critical patent/GB1365339A/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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/261—Compressed-air systems systems with both indirect application and application by springs or weights and released by compressed air
    • B60T13/263—Compressed-air systems systems with both indirect application and application by springs or weights and released by compressed air specially adapted for coupling with dependent systems, e.g. tractor-trailer systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

1365339 Brake valves CLAYTON DEWANDRE CO Ltd 20 Sept 1972 [14 Oct 1971] 47857/71 Heading F2F A differential protection valve for a vehicle has an inlet 2 connected to the service braking line, a second inlet 3 connected to a secondary, emergency or parking line and outlets 5 connected to spring brake actuators the valve being such that if the service brakes are applied with the secondary line exhausted and the spring brake actuators applied the service line pressure displaces a sleeve 10 and valve head 7a until the latter engages a seat 11 thereby interrupting the path from inlet 3 to outlets 5. Increased service pressure above a predetermined value effects continued movement of sleeve 10 causing a seal 8 on a flange 9 to move away from a valve head 7 thereby connecting inlet 2 to the spring brake actuators to decrease the effective load thereof and prevent overloading of the brakes and linkage. If the secondary line is exhausted while the service braking is operative at a pressure in excess of the predetermined value, valve head 7a closes against seat 11 to prevent the secondary line application until the service braking is released thereby preventing vehicle "roll-back".
GB4785771A 1971-10-14 1971-10-14 Differential protection valve for vehicle braking systems Expired GB1365339A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4785771A GB1365339A (en) 1971-10-14 1971-10-14 Differential protection valve for vehicle braking systems
DE19722250204 DE2250204A1 (en) 1971-10-14 1972-10-13 DIFFERENTIALLY ACTING PROTECTIVE VALVE FOR PRESSURE FLUID ACTUATED BRAKE ARRANGEMENTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4785771A GB1365339A (en) 1971-10-14 1971-10-14 Differential protection valve for vehicle braking systems

Publications (1)

Publication Number Publication Date
GB1365339A true GB1365339A (en) 1974-08-29

Family

ID=10446490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4785771A Expired GB1365339A (en) 1971-10-14 1971-10-14 Differential protection valve for vehicle braking systems

Country Status (2)

Country Link
DE (1) DE2250204A1 (en)
GB (1) GB1365339A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3605444A1 (en) * 1985-02-23 1986-09-25 Graubremse Gmbh, 6900 Heidelberg Air brake system for trailers

Also Published As

Publication number Publication date
DE2250204A1 (en) 1973-04-19

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years