GB971794A - Improvements in and relating to fluid pressure operated servo-devices - Google Patents

Improvements in and relating to fluid pressure operated servo-devices

Info

Publication number
GB971794A
GB971794A GB2177262A GB2177262A GB971794A GB 971794 A GB971794 A GB 971794A GB 2177262 A GB2177262 A GB 2177262A GB 2177262 A GB2177262 A GB 2177262A GB 971794 A GB971794 A GB 971794A
Authority
GB
United Kingdom
Prior art keywords
servo
piston
master cylinder
fluid
disc valve
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
GB2177262A
Inventor
William John Harrison
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.)
Automotive Products PLC
Original Assignee
Automotive Products PLC
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 Automotive Products PLC filed Critical Automotive Products PLC
Priority to GB2177262A priority Critical patent/GB971794A/en
Priority to DE1963A0020079 priority patent/DE1881022U/en
Priority to FR936891A priority patent/FR1358233A/en
Publication of GB971794A publication Critical patent/GB971794A/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B17/00—Combinations of telemotor and servomotor systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

971,794. Fluid-pressure brakes. AUTOMOTIVE PRODUCTS CO. Ltd. May 23, 1963 [June 5, 1962], No. 21772/62. Heading F2F. [Also in Division G3] In a fluid-pressure-operated servo device for a fluid-pressure braking system, the thrust member 5 coupling the piston 2 of the servo-device to a servo-operated master cylinder 4 is provided with a passage 14 connecting a source of hydraulic fluid via inlet 19 from a pedaloperated master cylinder for actuating a valve 3 to control the operation of the servo device. The servo device is shown in its non-operative condition in Fig. 1 wherein opposed sides of the servo piston 2 are open to vacuum through the central aperture of an annular member 28, a servo disc valve 40 controlling the supply of atmospheric pressure (via a flexible tube 7) being closed. Upon actuation of the pedaloperated master cylinder (not shown) hydraulic fluid passes into the hollow thrust member 5 via inlet 19, pipe 18 and radial drillings 20, and a plunger 26 in the servo piston 2 is moved outwardly. This movement of the plunger 26 is transmitted through a rod 27 to an annular member 28 towards a closure disc valve 38 the closure of the central aperture of the annular member 28 by the disc valve 38 isolating one side of the servo piston 2 from the vacuum source. Continued movement of the plunger 26 causes axial movement of a valve stem 39 so that a second disc valve 40 is moved off its seating whereby air is admitted to the isolated side of the servo piston, the resulting axial movement of the piston causing corresponding movement of the master cylinder piston 16, the thrust being transmitted through the hollow thrust member 5.
GB2177262A 1962-06-05 1962-06-05 Improvements in and relating to fluid pressure operated servo-devices Expired GB971794A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2177262A GB971794A (en) 1962-06-05 1962-06-05 Improvements in and relating to fluid pressure operated servo-devices
DE1963A0020079 DE1881022U (en) 1962-06-05 1963-06-04 PRESSURE ACTUATED SERVO DEVICE.
FR936891A FR1358233A (en) 1962-06-05 1963-06-04 Servo-device operating by the pressure of a fluid, in particular for vehicle braking systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2177262A GB971794A (en) 1962-06-05 1962-06-05 Improvements in and relating to fluid pressure operated servo-devices

Publications (1)

Publication Number Publication Date
GB971794A true GB971794A (en) 1964-10-07

Family

ID=10168532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2177262A Expired GB971794A (en) 1962-06-05 1962-06-05 Improvements in and relating to fluid pressure operated servo-devices

Country Status (2)

Country Link
DE (1) DE1881022U (en)
GB (1) GB971794A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203812A (en) * 1987-02-11 1988-10-26 Teves Gmbh Alfred Hydraulically driven boosted actuating device for an automotive vehicle clutch or brake

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3012455A1 (en) * 1980-03-31 1981-10-08 Alfred Teves Gmbh, 6000 Frankfurt MECHANICALLY CONTROLLED POWER AMPLIFIER, ESPECIALLY FOR HYDRAULIC BRAKE SYSTEMS OF MOTOR VEHICLES
DE3346140A1 (en) * 1983-12-21 1985-07-11 Alfred Teves Gmbh, 6000 Frankfurt Vacuum brake booster
DE3700979C2 (en) * 1987-01-15 1997-11-20 Teves Gmbh Alfred Hydraulically controlled actuating device for motor vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203812A (en) * 1987-02-11 1988-10-26 Teves Gmbh Alfred Hydraulically driven boosted actuating device for an automotive vehicle clutch or brake
GB2203812B (en) * 1987-02-11 1991-01-16 Teves Gmbh Alfred Hydraulically driven actuating device for an automotive vehicle

Also Published As

Publication number Publication date
DE1881022U (en) 1963-10-17

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