GB835970A - Improvements in or relating to power-operated braking apparatus for vehicles - Google Patents

Improvements in or relating to power-operated braking apparatus for vehicles

Info

Publication number
GB835970A
GB835970A GB3821657A GB3821657A GB835970A GB 835970 A GB835970 A GB 835970A GB 3821657 A GB3821657 A GB 3821657A GB 3821657 A GB3821657 A GB 3821657A GB 835970 A GB835970 A GB 835970A
Authority
GB
United Kingdom
Prior art keywords
piston
pedal
servo
brakes
fluid
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
GB3821657A
Inventor
Donald Henry Ballard
George Kenneth Farmery
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 GB3821657A priority Critical patent/GB835970A/en
Priority to ES0245841A priority patent/ES245841A1/en
Priority to GB1421760A priority patent/GB914301A/en
Publication of GB835970A publication Critical patent/GB835970A/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
    • B60T13/241—Differential pressure systems
    • B60T13/242—The control valve is provided as one unit with the servomotor cylinder
    • B60T13/245—Hydraulic command of the control valve, hydraulic transmission to the brake
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/24—Single initiating means operating on more than one circuit, e.g. dual circuits
    • 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
    • B60T13/58—Combined or convertible systems
    • B60T13/581—Combined or convertible systems both hydraulic and pneumatic

Landscapes

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

Abstract

835,970. Fluid pressure brakes. CLAYTON DEWANDRE CO. Ltd. Nov. 27, 1958 [Dec. 9, 1957], No. 38216/57. Class 103 (1). A power-operated braking apparatus for vehicles, consists of two independent systems operating separate sets of brakes, each system comprising a vacuum or compressed air reservoir 1, la feeding a vacuum or compressed air operated servo-. device 3, 3a, hydraulic means 6, 6a for transmitting movements of the movable member of the servo-device to the actuating means 8, 8a of the brakes, valve means 5, 5a controlling the servodevice and an hydraulic transmission through which movements of a foot pedal P are transmitted to valve means 5, 5a, each transmission including a master cylinder, the two master cylinders being included in a unit D for common actuation by pedal P. In the apparatus described, the servo - devices 3, 3a, Fig. 2 (not shown), are of the vacuum suspended type, the ends of each device being connected by a pipe 4, 4a through the valve 5, 5a, the two reservoirs 1, 1a being evacuated by a common exhauster E. The unit D, Fig. 3, comprises two pistons 20, 20a actuated by pedal P through roller 26, cap 35, compression spring 23, plunger 21, bridge 22 and plungers 27, 27a to displace fluid into conduits 19, 19a. If one system fails, the other remains operative. An alternative unit D, Fig. 4, comprises spaced coaxial pistons 28, 28a in a cylinder 29 having outlets 30, 31 to conduits 19, 19a, respectively. The pedal P actuates piston 28 through roller 26, cap 34, spring 35, plate 36 and plunger 37 to displace fluid through port 30, the piston 28a being moved hydraulically to displace fluid through port 31. A reservoir 40 arranged concentrically of the cylinder 29 supplies fluid to the master cylinders through ports 41, 41a, the reservoir being divided into two by radial ribs 42 for independent supplies. Should a failure occur in the system operated by piston 28, then the piston 28a will be moved mechanically through piston 28 and abutments 32, 32a; if the other system fails then piston 28a yields freely to a limit position.
GB3821657A 1957-12-09 1957-12-09 Improvements in or relating to power-operated braking apparatus for vehicles Expired GB835970A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3821657A GB835970A (en) 1957-12-09 1957-12-09 Improvements in or relating to power-operated braking apparatus for vehicles
ES0245841A ES245841A1 (en) 1957-12-09 1958-12-09 Improvements in or relating to power-operated braking apparatus for vehicles
GB1421760A GB914301A (en) 1957-12-09 1960-04-22 Improvements in or relating to power-assisted braking apparatus for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3821657A GB835970A (en) 1957-12-09 1957-12-09 Improvements in or relating to power-operated braking apparatus for vehicles

Publications (1)

Publication Number Publication Date
GB835970A true GB835970A (en) 1960-05-25

Family

ID=10402019

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3821657A Expired GB835970A (en) 1957-12-09 1957-12-09 Improvements in or relating to power-operated braking apparatus for vehicles
GB1421760A Expired GB914301A (en) 1957-12-09 1960-04-22 Improvements in or relating to power-assisted braking apparatus for vehicles

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1421760A Expired GB914301A (en) 1957-12-09 1960-04-22 Improvements in or relating to power-assisted braking apparatus for vehicles

Country Status (2)

Country Link
ES (1) ES245841A1 (en)
GB (2) GB835970A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3275381A (en) * 1964-06-29 1966-09-27 Bendix Corp Fluid pressure servomotor
DE1269514B (en) * 1961-03-08 1968-05-30 Automotive Prod Co Ltd Pressure fluid brake system for vehicles, especially motor vehicles
DE1292525B (en) * 1960-06-24 1969-04-10 Magneti Marelli Spa Air brake system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3643141A1 (en) * 1986-12-17 1988-07-07 Teves Gmbh Alfred BRAKE SYSTEM FOR MOTOR VEHICLES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1292525B (en) * 1960-06-24 1969-04-10 Magneti Marelli Spa Air brake system
DE1269514B (en) * 1961-03-08 1968-05-30 Automotive Prod Co Ltd Pressure fluid brake system for vehicles, especially motor vehicles
US3275381A (en) * 1964-06-29 1966-09-27 Bendix Corp Fluid pressure servomotor

Also Published As

Publication number Publication date
ES245841A1 (en) 1959-06-01
GB914301A (en) 1963-01-02

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