GB1131614A - Improvements in fluid-pressure operated boosters or servo motors - Google Patents

Improvements in fluid-pressure operated boosters or servo motors

Info

Publication number
GB1131614A
GB1131614A GB4736465A GB4736465A GB1131614A GB 1131614 A GB1131614 A GB 1131614A GB 4736465 A GB4736465 A GB 4736465A GB 4736465 A GB4736465 A GB 4736465A GB 1131614 A GB1131614 A GB 1131614A
Authority
GB
United Kingdom
Prior art keywords
lever
input
movable wall
valve
force
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
GB4736465A
Inventor
Glyn Philip Reginald Farr
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
Priority to GB657563A priority Critical patent/GB1028994A/en
Priority to US344477A priority patent/US3269273A/en
Priority to FR964395A priority patent/FR1390488A/en
Application filed by Girling Ltd filed Critical Girling Ltd
Priority to GB4736465A priority patent/GB1131614A/en
Priority to FR38945A priority patent/FR89130E/en
Publication of GB1131614A publication Critical patent/GB1131614A/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
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/569—Vacuum systems indirect, i.e. vacuum booster units characterised by piston details, e.g. construction, mounting of diaphragm

Landscapes

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

Abstract

1,131,614. Brake booster. GIRLING Ltd. 9 Nov., 1965 [18 Nov., 1964], No. 47364/65. Addition to 1,028,994. Heading F2F. A brake booster comprises a housing, a force input member acting on a force output member through a lever in the housing to apply an input force to the output member, a movable wall mounted in the housing or casing across which a pressure differential is developed to augment the input force, and a valve controlling the development of the pressure differential in response to movement of the lever, in which the input and output members are in axial alignment with the booster axis and the lever is formed by a part of the movable wall and is adapted to move angularly about a fulcrum on another part of the movable wall at a point spaced from the axis of the booster. In a first embodiment (Fig. 1), the movable wall comprises a member 14 with a peripheral diaphragm 15, the lever 18 being attached to the member 14 by a diaphragm 19 and abutting a pivot 21 detachably mounted in the member. Initially the chamber 12 is connected to the vacuum chamber 11 by passages 23, 24, 22, and vacuum valve 26. When the input rod 16 is moved the lever 18 moves clockwise to close valve 26 and open air valve 28 to admit air through filter 45 and hollow output rod 32. The differential pressure on the part of lever 18 defined by diaphragm 19 moves the lever back anticlockwise to close the air valve and to provide a "feel" force to the input rod proportional to the pressure differential. In a second embodiment (Fig. 3), the movable wall 55 is provided by two pressings 58, 59 clamping a diaphragm 54, the pressings having dished portions over an area 60 within which is provided a circular plate 62 forming the lever. The lever has part-spherical seatings engaging pins 63a on the wall to provide a fulcrum for the lever. The actuating valve is of spool form and when operated allows air to enter the chamber 57 through a filter 76.
GB4736465A 1963-02-19 1964-11-18 Improvements in fluid-pressure operated boosters or servo motors Expired GB1131614A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB657563A GB1028994A (en) 1964-11-18 1963-02-19 Improvements in fluid-pressure-operated boosters
US344477A US3269273A (en) 1963-02-19 1964-02-12 Fluid pressure operated boosters
FR964395A FR1390488A (en) 1963-02-19 1964-02-19 Improvements to amplifier relays actuated by fluid pressure
GB4736465A GB1131614A (en) 1964-11-18 1964-11-18 Improvements in fluid-pressure operated boosters or servo motors
FR38945A FR89130E (en) 1963-02-19 1965-11-18 Improvements to amplifier relays actuated by fluid pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4736465A GB1131614A (en) 1964-11-18 1964-11-18 Improvements in fluid-pressure operated boosters or servo motors

Publications (1)

Publication Number Publication Date
GB1131614A true GB1131614A (en) 1968-10-23

Family

ID=10444686

Family Applications (2)

Application Number Title Priority Date Filing Date
GB657563A Expired GB1028994A (en) 1963-02-19 1963-02-19 Improvements in fluid-pressure-operated boosters
GB4736465A Expired GB1131614A (en) 1963-02-19 1964-11-18 Improvements in fluid-pressure operated boosters or servo motors

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB657563A Expired GB1028994A (en) 1963-02-19 1963-02-19 Improvements in fluid-pressure-operated boosters

Country Status (1)

Country Link
GB (2) GB1028994A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493250A1 (en) * 1980-08-19 1982-05-07 Teves Gmbh Alfred DEPRESSION SPEAKER FOR BRAKE FORCE AMPLIFIER FOR MOTOR VEHICLES
EP0151028A2 (en) * 1984-01-28 1985-08-07 Tokico Ltd. Vehicle braking system
US5406969A (en) * 1991-02-18 1995-04-18 The University Of Melbourne Regulation of flowrate of liquid furnace products

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3307880A1 (en) * 1983-03-05 1984-09-06 Alfred Teves Gmbh, 6000 Frankfurt VACUUM HOUSING FOR A BRAKE AMPLIFIER

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493250A1 (en) * 1980-08-19 1982-05-07 Teves Gmbh Alfred DEPRESSION SPEAKER FOR BRAKE FORCE AMPLIFIER FOR MOTOR VEHICLES
EP0151028A2 (en) * 1984-01-28 1985-08-07 Tokico Ltd. Vehicle braking system
EP0151028A3 (en) * 1984-01-28 1985-08-28 Tokico Ltd. Vehicle braking system
US4630706A (en) * 1984-01-28 1986-12-23 Tokico Ltd. Vehicle braking system
US5406969A (en) * 1991-02-18 1995-04-18 The University Of Melbourne Regulation of flowrate of liquid furnace products

Also Published As

Publication number Publication date
GB1028994A (en) 1966-05-11

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