GB1473737A - Brake actuating devices for two-circuit compressed air braking systems for motor vehicles - Google Patents

Brake actuating devices for two-circuit compressed air braking systems for motor vehicles

Info

Publication number
GB1473737A
GB1473737A GB3514474A GB3514474A GB1473737A GB 1473737 A GB1473737 A GB 1473737A GB 3514474 A GB3514474 A GB 3514474A GB 3514474 A GB3514474 A GB 3514474A GB 1473737 A GB1473737 A GB 1473737A
Authority
GB
United Kingdom
Prior art keywords
piston
passage
air
pressure
brake actuating
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
GB3514474A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1473737A publication Critical patent/GB1473737A/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
    • B60T13/26—Compressed-air systems
    • B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
    • B60T13/44—Compressed-air systems indirect, i.e. compressed air booster units indirect systems with two-chamber booster units

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

1473737 Pneumatic actuators ROBERT BOSCH GmbH 9 Aug 1974 [13 Aug 1973] 35144/74 Heading F1D [Also in Division F2] A pneumatic cylinder has tandem pistons 7, 8 acting on a rod 34, the piston 7 having two seals 10, 10' defining a chamber 11 connected to the atmosphere via a radial passage 12 in the piston and an annular passage 13 between two coaxial tubular members 14, 15 slidably arranged in an axially extending air inlet 17 for a working chamber 25 for the piston 8, the members being fixed to the piston 7. A dual control valve 19 when actuated supplies air to inlets 17, 23 for the pistons 7, 8, the pressure for piston 7 being greater than that for piston 8. If either of the supplies fails, the piston 8 will work alone, or the piston 7 will mechanically push the piston 8. If either of the seals 10, 10' leaks, the air-pressure for either piston which acts on the seal will pass to atmosphere via the passage 13, a gap 31 between the members 14, 15 and a passage 33. Thus, the air-pressure for actuating the other piston is not affected. The cylinder can be used to mechanically boost a brake actuating cylinder 4.
GB3514474A 1973-08-13 1974-08-09 Brake actuating devices for two-circuit compressed air braking systems for motor vehicles Expired GB1473737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732340892 DE2340892A1 (en) 1973-08-13 1973-08-13 PRELOAD CYLINDER FOR DUAL CIRCUIT AIR BRAKE SYSTEM

Publications (1)

Publication Number Publication Date
GB1473737A true GB1473737A (en) 1977-05-18

Family

ID=5889606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3514474A Expired GB1473737A (en) 1973-08-13 1974-08-09 Brake actuating devices for two-circuit compressed air braking systems for motor vehicles

Country Status (4)

Country Link
AT (1) AT334763B (en)
CH (1) CH571419A5 (en)
DE (1) DE2340892A1 (en)
GB (1) GB1473737A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181487A1 (en) * 1984-11-05 1986-05-21 Allied Corporation Compact power brake actuation assembly

Also Published As

Publication number Publication date
ATA658974A (en) 1976-05-15
AT334763B (en) 1976-02-10
CH571419A5 (en) 1976-01-15
DE2340892A1 (en) 1975-02-27

Similar Documents

Publication Publication Date Title
GB1514437A (en) Throttle valves for two-line vehicle braking systems
ES440842A1 (en) Brake system with antiskid control
GB1110960A (en) Hydraulic multi-circuit braking installation with an auxiliary power device
GB1390531A (en) Brake actuator units
GB1040132A (en) Improvements in fluid-pressure boosters or servo-motors
GB814502A (en) Fluid pressure servomotor, particularly for braking systems
GB746722A (en) Improvements in or relating to combined manual and power operated braking systems
GB1516736A (en) Brake valve assembly for a two-circuit(compressed aid)brake system in a motor vehicle
GB644231A (en) Improvements relating to brake cylinders for fluid pressure braking systems
GB1512224A (en) Pressure medium operated disc brake
GB982519A (en) Improvements in or relating to fluid pressure-operated devices for vehicle braking installations
GB620425A (en) Improvements in or relating to power operated hydraulic actuators
GB1445355A (en) Master cylinders for breaking systems
US2406328A (en) Power brake mechanism
GB944821A (en) Vehicle brake system
GB1473737A (en) Brake actuating devices for two-circuit compressed air braking systems for motor vehicles
GB1440511A (en) Brake actuators
GB1042961A (en) Fluid proessure motor for mechanism for braking systems
GB1514755A (en) Pressure-fluid actuator for the brakes of a road vehicle with service emergency and parking braking actions
GB1406023A (en) Seal for non-bottoming piston cylinder assembly
GB936324A (en) Improvements in or relating to braking systems
GB1302907A (en)
GB975259A (en) Improvements in and relating to fluid pressure braking systems
GB1386134A (en) Multi-circuit brake system
GB1415192A (en) Braking systems for vehicles

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee