GB942402A - Improvements in fluid pressure operated braking apparatus - Google Patents

Improvements in fluid pressure operated braking apparatus

Info

Publication number
GB942402A
GB942402A GB2012460A GB2012460A GB942402A GB 942402 A GB942402 A GB 942402A GB 2012460 A GB2012460 A GB 2012460A GB 2012460 A GB2012460 A GB 2012460A GB 942402 A GB942402 A GB 942402A
Authority
GB
United Kingdom
Prior art keywords
cylinder
brakes
pressure
valve
servomotor
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
GB2012460A
Inventor
Donald Henry Ballard
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 GB2012460A priority Critical patent/GB942402A/en
Publication of GB942402A publication Critical patent/GB942402A/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
    • B60T13/268—Compressed-air systems using accumulators or reservoirs
    • 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
    • B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
    • B60T13/44—Compressed-air systems indirect, i.e. compressed air booster units indirect systems with two-chamber booster units

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

942,402. Fluid-pressure controlled brakes. CLAYTON DEWANDRE CO. Ltd. June 21, 1961 [June 8, 1960], No. 20124/60. Heading F2F. A braking apparatus for motor vehicles comprises an air - pressure - operated system for actuating one set of brakes, an air-pressure-boosted hyraulic system for actuating another set of brakes, and common pedal-operated means for actuating the control valve of the air pressure system and the master cylinder of the hydraulic system. As shown, a boosted hydraulic system for operating the front wheel brakes includes a servomotor 1, a control valve 2 and an hydraulic output cylinder 3 from which a conduit 4 leads to the wheel brake cylinders, compressed air being admitted to the servomotor by way of the valve 2 from a conduit 5 connected to a reservoir 6 which, or a supplementary reservoir, may be combined with the servomotor. The servomotor hydraulic cylinder unit is of the type wherein the servopiston has mechanical connection with the hydraulic cylinder piston and in which pressure generated in the master cylinder 7 is transmitted through conduit 8 to a plunger which actuates the valve 2 and also to a space behind the piston in the hydraulic cylinder such that normally the latter transmits the output of the servomotor and of the master cylinder 7 to the wheel brakes, but transmits the pressure generated by the cylinder 7 alone in the event of a failure of the compressed air supply. The cylinder 7 is actuated by a foot pedal 9, a " pulltype " valve 13 being interposed in the rod linkage 10 and controlling the flow of compressed air to the rear brake power unit 14 from a reservoir 15; depression of the pedal effects generation of the master cylinder pressure to operate the front brakes and simultaneous admittance of air pressure to the unit 14 to operate the rear brakes. In a modification, the rod and lever system 10, 11 and 12 and valve 13 are replaced by a beam to which the pedal 9 is connected, the ends of the beam being connected respectively by rods to the cylinder 7 and a push-type brake valve controlling the flow of compressed air to the unit 14. Specification 854,491 is referred to.
GB2012460A 1960-06-08 1960-06-08 Improvements in fluid pressure operated braking apparatus Expired GB942402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2012460A GB942402A (en) 1960-06-08 1960-06-08 Improvements in fluid pressure operated braking apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2012460A GB942402A (en) 1960-06-08 1960-06-08 Improvements in fluid pressure operated braking apparatus

Publications (1)

Publication Number Publication Date
GB942402A true GB942402A (en) 1963-11-20

Family

ID=10140783

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2012460A Expired GB942402A (en) 1960-06-08 1960-06-08 Improvements in fluid pressure operated braking apparatus

Country Status (1)

Country Link
GB (1) GB942402A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213890A (en) * 1987-12-11 1989-08-23 Bendix Ltd Vehicle having compressed air and hydraulic operated brakes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213890A (en) * 1987-12-11 1989-08-23 Bendix Ltd Vehicle having compressed air and hydraulic operated brakes
GB2213890B (en) * 1987-12-11 1992-01-08 Bendix Ltd Motor vehicle with a compressed air pressure operable braking system

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