GB775321A - Improvements relating to braking systems incorporating a vacuum booster cylinder - Google Patents

Improvements relating to braking systems incorporating a vacuum booster cylinder

Info

Publication number
GB775321A
GB775321A GB612855A GB612855A GB775321A GB 775321 A GB775321 A GB 775321A GB 612855 A GB612855 A GB 612855A GB 612855 A GB612855 A GB 612855A GB 775321 A GB775321 A GB 775321A
Authority
GB
United Kingdom
Prior art keywords
valve
cage
spring
lips
lip
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
GB612855A
Inventor
Francis Antony Dawson Sadler
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 GB612855A priority Critical patent/GB775321A/en
Publication of GB775321A publication Critical patent/GB775321A/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

Landscapes

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

Abstract

775,321. Fluid-pressure brakes. GIRLING, Ltd. March 2, 1956 [March 2, 1955], No. 6128/55. Class 103 (1). [Also in Group XXIX] A control valve for pneumatic servo devices of the kind described in Specification 694,582, i.e. modified in that a primary valve member 43 urged upwardly by a spring 47 is provided between the valve lips 38 of the valve cage and the housing 14, the member 43 having a lip 44 which is gapped or notched as at 45 in Figure 5. When a brake application is initiated by upward movement of rod 36 and cage 35, due to spring 47 being stronger than spring 41, the lip 44 maintains the valve washer 39 out of contact with lips 38 on the cage and thus a certain amount of atmospheric air from inside the cage may pass through the notches 45 to reduce the degree of vacuum passed from chamber 30 through passage 32 to the servo cylinder, thus producing a smoother brake actuation. If movement of rod 36 is continued upwards until the top of valve head 40 strikes the cover 34, valve member 44 is forced down so that lips 38 and 44 are level and inlet of atmospheric air is completely shut off. If spring 47 is made weaker than spring 41, the washer 39 is not raised from lips 38 until the vacuum has taken effect on the underside of diaphragm 33 and the inner end of the cage.
GB612855A 1955-03-02 1955-03-02 Improvements relating to braking systems incorporating a vacuum booster cylinder Expired GB775321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB612855A GB775321A (en) 1955-03-02 1955-03-02 Improvements relating to braking systems incorporating a vacuum booster cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB612855A GB775321A (en) 1955-03-02 1955-03-02 Improvements relating to braking systems incorporating a vacuum booster cylinder

Publications (1)

Publication Number Publication Date
GB775321A true GB775321A (en) 1957-05-22

Family

ID=9808934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB612855A Expired GB775321A (en) 1955-03-02 1955-03-02 Improvements relating to braking systems incorporating a vacuum booster cylinder

Country Status (1)

Country Link
GB (1) GB775321A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977194A (en) * 1974-05-31 1976-08-31 Samson Apparatebau Ag Device for fine adjustment of the tool seat of a machine tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977194A (en) * 1974-05-31 1976-08-31 Samson Apparatebau Ag Device for fine adjustment of the tool seat of a machine tool

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