GB964496A - Booster-assisted brake system for vehicles - Google Patents

Booster-assisted brake system for vehicles

Info

Publication number
GB964496A
GB964496A GB2649359A GB2649359A GB964496A GB 964496 A GB964496 A GB 964496A GB 2649359 A GB2649359 A GB 2649359A GB 2649359 A GB2649359 A GB 2649359A GB 964496 A GB964496 A GB 964496A
Authority
GB
United Kingdom
Prior art keywords
piston
booster
pedal
cylinder
master cylinder
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
GB2649359A
Inventor
John Walter Davis
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.)
Girling Ltd
Original Assignee
Girling 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 Girling Ltd filed Critical Girling Ltd
Priority to GB2649359A priority Critical patent/GB964496A/en
Publication of GB964496A publication Critical patent/GB964496A/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
    • B60T13/244—Mechanical command of the control valve, hydraulic transmission to the brakes

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)

Abstract

964,496. Fluid pressure brakes; indicators. GIRLING Ltd. Oct. 5, 1960 [Aug. 1, 1959], No. 26493/59. Headings F2E and F2F. A pedal operated booster-assisted braking system for a vehicle incorporates a master cylinder so that on failure of the booster the capacity of the master cylinder is increased to provide the pedal with a length of travel greater than normal during application of the brake. A pedal operated rod 25 in normal use shifts inwardly a piston 23 having shoulders 26 and 27 which close one valve 38 previously venting a booster cylinder 16 through a port 31, and opens another valve 39 connecting the cylinder 16 through a path 29, 38 and 34 to a vacuum source 37. A booster piston 17 and an integral piston 18 operating in a master cylinder 10 are moved forward, the consequent increase in pressure closing a reservoir valve 54 and pressurizing a brake line 14. The booster piston 17 and pedal operated piston 23 are normally locked together by a radial latch-pin 45 which is maintained by the vacuum source 37 acting on a piston 44 in engagement with a groove in a sleeve 28 fast with the piston 23, the piston 44 being slidable in a radial cylinder fast with the piston 17. Failure of the vacuum allows a spring to raise the latch pin 45 whereupon a spring 53 urges the piston 23 outwardly to raise the brake pedal which subsequently when applied moves only the piston 23 in the master cylinder so that the fluid displacement is less than normal, the pedal pressure being smaller and pedal movement greater.
GB2649359A 1959-08-01 1959-08-01 Booster-assisted brake system for vehicles Expired GB964496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2649359A GB964496A (en) 1959-08-01 1959-08-01 Booster-assisted brake system for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2649359A GB964496A (en) 1959-08-01 1959-08-01 Booster-assisted brake system for vehicles

Publications (1)

Publication Number Publication Date
GB964496A true GB964496A (en) 1964-07-22

Family

ID=10244514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2649359A Expired GB964496A (en) 1959-08-01 1959-08-01 Booster-assisted brake system for vehicles

Country Status (1)

Country Link
GB (1) GB964496A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2460529A1 (en) * 1973-12-22 1975-07-03 Girling Ltd MASTER CYLINDER FOR HYDRAULIC BRAKE SYSTEM
DE2521368A1 (en) * 1975-05-14 1976-11-25 Teves Gmbh Alfred Vacuum servo for hydraulic brakes - with pressure control valve for fail safe manual overide if servo fails

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2460529A1 (en) * 1973-12-22 1975-07-03 Girling Ltd MASTER CYLINDER FOR HYDRAULIC BRAKE SYSTEM
DE2521368A1 (en) * 1975-05-14 1976-11-25 Teves Gmbh Alfred Vacuum servo for hydraulic brakes - with pressure control valve for fail safe manual overide if servo fails

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