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GB973686A - Fluid pressure servomotor - Google Patents

Fluid pressure servomotor

Info

Publication number
GB973686A
GB973686A GB12657/63A GB1265763A GB973686A GB 973686 A GB973686 A GB 973686A GB 12657/63 A GB12657/63 A GB 12657/63A GB 1265763 A GB1265763 A GB 1265763A GB 973686 A GB973686 A GB 973686A
Authority
GB
United Kingdom
Prior art keywords
valve
chamber
brakes
vacuum
march
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
GB12657/63A
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.)
DBA SA
Original Assignee
DBA SA
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 DBA SA filed Critical DBA SA
Publication of GB973686A publication Critical patent/GB973686A/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
    • F15B17/00—Combinations of telemotor and servomotor systems
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86919—Sequentially closing and opening alternately seating flow controllers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Braking Systems And Boosters (AREA)
  • Hydraulic Motors (AREA)
  • Multiple-Way Valves (AREA)
  • Details Of Valves (AREA)

Abstract

973,686. Fluid pressure brakes. D.B.A. S.A. March 29, 1963 [March 30, 1962], No. 12657/63. Heading F2F. In a pneumatic servomotor for operating brakes wherein a vacuum suspended spring- loaded diaphragm 18 separates a vacuum chamber 14 and a variable pressure chamber 16 and the latter is connected at 68 to a valve control chamber 66 which for brake release communicates via a valve 92 with a vacuum chamber 64 connected at 62 to the chamber 14 and for brake engagement communicates via a valve 80 with an atmospheric chamber 70, the valve is balanced by providing a fourth chamber 102 connected at 100 to the vacuum chamber 64. The chamber 102 is formed between the valve casing 76 and a flexible wall 98 fast with a valve element 94 and the effective area of the wall is equal to the area bounded by the valve seats 90, 96. To engage the brakes pressure liquid from a master cylinder (not shown) is supplied through a duct 50 to a valve operating piston 110, initial movement of which closes the valve 92 whereafter further movement of the piston 110 moves the valve element 94 to open the valve 80. Reference has been directed by the Comptroller to Specification 927,688.
GB12657/63A 1962-03-30 1963-03-29 Fluid pressure servomotor Expired GB973686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR892805A FR1326576A (en) 1962-03-30 1962-03-30 Improvements to fluid pressure actuators

Publications (1)

Publication Number Publication Date
GB973686A true GB973686A (en) 1964-10-28

Family

ID=8775722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12657/63A Expired GB973686A (en) 1962-03-30 1963-03-29 Fluid pressure servomotor

Country Status (5)

Country Link
US (1) US3200579A (en)
DE (1) DE1295380B (en)
ES (1) ES286601A1 (en)
FR (1) FR1326576A (en)
GB (1) GB973686A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3330113A (en) * 1964-11-02 1967-07-11 Singer Co Power brakes
US3948566A (en) * 1974-06-03 1976-04-06 Stromberg-Hydramite Corporation Trailer brake system
FR2494653A1 (en) * 1980-11-21 1982-05-28 Dba BRAKING SYSTEM FOR UTILITY VEHICLES
US4884403A (en) * 1988-07-21 1989-12-05 Itt Corporation Modular brake actuator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662376A (en) * 1943-10-04 1953-12-15 Bendix Aviat Corp Booster unit for hydraulic pressure systems
DE906301C (en) * 1949-03-28 1954-03-11 Dewandre Co Ltd C Brake control valve, in particular for air brakes on motor vehicles
US2661598A (en) * 1950-02-16 1953-12-08 Bendix Aviat Corp Power unit for hydraulic pressure systems
US2871828A (en) * 1954-09-07 1959-02-03 Bendix Aviat Corp Power-assisted actuator
DE1163694B (en) * 1956-01-17 1964-02-20 Bendix Corp Pneumatic servomotor, in particular for actuating the brakes of a motor vehicle
US3099941A (en) * 1960-07-29 1963-08-06 Gen Motors Corp Brake booster unit
US3113806A (en) * 1961-05-12 1963-12-10 Bendix Corp Guide bearing for reciprocating structures
US3082745A (en) * 1961-08-23 1963-03-26 Gen Motors Corp Power brake booster control valve mechanism

Also Published As

Publication number Publication date
FR1326576A (en) 1963-05-10
DE1295380B (en) 1969-05-14
ES286601A1 (en) 1963-11-16
US3200579A (en) 1965-08-17

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