GB549300A - Improvements in or relating to fluid pressure servo devices - Google Patents

Improvements in or relating to fluid pressure servo devices

Info

Publication number
GB549300A
GB549300A GB611241A GB611241A GB549300A GB 549300 A GB549300 A GB 549300A GB 611241 A GB611241 A GB 611241A GB 611241 A GB611241 A GB 611241A GB 549300 A GB549300 A GB 549300A
Authority
GB
United Kingdom
Prior art keywords
piston
pressure
fluid
valve
fluid pressure
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
GB611241A
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
Priority to NL66890D priority Critical patent/NL66890C/xx
Priority to BE464118D priority patent/BE464118A/xx
Application filed by Clayton Dewandre Co Ltd filed Critical Clayton Dewandre Co Ltd
Priority to GB611241A priority patent/GB549300A/en
Publication of GB549300A publication Critical patent/GB549300A/en
Priority to FR924438D priority patent/FR924438A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage
    • 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
    • B60T13/243—Mechanical command of the control valve, mechanical transmission to the brakes

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)
  • Braking Arrangements (AREA)

Abstract

549,300. Fluid-pressure servomotor controlsystems. CLAYTON DEWANDRE CO., Ltd., and EDGE, S. H. May 12, 1941, No. 6112. [Class 135] [Also in Group XXXIV] A servo device operated by fluid pressure has differential piston areas upon which the pressure fluid can act, the smaller area being always under pressure tending to maintain the piston inoperative until overcome by admission through a manually controlled valve of pressure fluid to act upon the larger piston area to transmit movement to the device which is under control. Fig. 1 shows a piston 6 at the end of its return stroke, with a rod 21 connected to a brake, clutch or other device. A skirt portion 25 of the piston 6 provides an annular space 24 in the cylinder 7 to which the fluid pressure reservoir 14 is connected so as always to exert pressure upon the piston annulus 22 and so provide a return force for the piston 6. Channels 16 open to space 24 supply pressure fluid through a valve 12 within the piston 6, to the chamber 20 at the back of the piston 6 to operate the brake &c. when the valve is opened by the action of a pedal 2 upon a hollow plunger 4, a port 9 of the plunger normally affording passage from space 20 to exhaust being closed by the end of the valve stem 10 at the beginning of the valve opening. In another construction shown in Fig. 3 the fluid pressure from a reservoir 40 exerts the returning force upon hollow extension 44 of the main piston 36 the controlling valve 34 being situated at the inner end of the extension 44. The piston 36 is connected to the operating rod 32 by a pivoted lever 30 connected to the piston rod 46.
GB611241A 1941-05-12 1941-05-12 Improvements in or relating to fluid pressure servo devices Expired GB549300A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL66890D NL66890C (en) 1941-05-12
BE464118D BE464118A (en) 1941-05-12
GB611241A GB549300A (en) 1941-05-12 1941-05-12 Improvements in or relating to fluid pressure servo devices
FR924438D FR924438A (en) 1941-05-12 1946-03-26 Servo-control device operating by fluid pressure, in particular for automobile brakes and clutches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB611241A GB549300A (en) 1941-05-12 1941-05-12 Improvements in or relating to fluid pressure servo devices

Publications (1)

Publication Number Publication Date
GB549300A true GB549300A (en) 1942-11-16

Family

ID=9808599

Family Applications (1)

Application Number Title Priority Date Filing Date
GB611241A Expired GB549300A (en) 1941-05-12 1941-05-12 Improvements in or relating to fluid pressure servo devices

Country Status (4)

Country Link
BE (1) BE464118A (en)
FR (1) FR924438A (en)
GB (1) GB549300A (en)
NL (1) NL66890C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544042A (en) * 1945-06-09 1951-03-06 Bendix Aviat Corp Hydraulic power brake servo mechanism
US2574335A (en) * 1948-02-21 1951-11-06 Ledue Rene Fluid-pressure motor device for control systems
US2916882A (en) * 1956-01-03 1959-12-15 Gen Motors Corp Hydraulic power brake booster
US3024592A (en) * 1960-11-09 1962-03-13 Lockheed Aircraft Corp Pin actuating device
US4350077A (en) * 1979-07-24 1982-09-21 Nissin Kogyo Kabushiki Kaisha Differential pressure operated servo boosters

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104742A (en) * 1963-09-24 pm jftsz
FR2516179A1 (en) * 1981-11-12 1983-05-13 Wabco Freinage Vehicules Sa Fluid pressure servomotor for clutch operation - has pressure reducer in piston to control piston thrust on lever

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544042A (en) * 1945-06-09 1951-03-06 Bendix Aviat Corp Hydraulic power brake servo mechanism
US2574335A (en) * 1948-02-21 1951-11-06 Ledue Rene Fluid-pressure motor device for control systems
US2916882A (en) * 1956-01-03 1959-12-15 Gen Motors Corp Hydraulic power brake booster
US3024592A (en) * 1960-11-09 1962-03-13 Lockheed Aircraft Corp Pin actuating device
US4350077A (en) * 1979-07-24 1982-09-21 Nissin Kogyo Kabushiki Kaisha Differential pressure operated servo boosters

Also Published As

Publication number Publication date
NL66890C (en)
BE464118A (en)
FR924438A (en) 1947-08-05

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