GB1305476A – – Google Patents
GB1305476A – – Google Patents
Info
Publication number
GB1305476A
GB1305476A
GB1305476DA
GB1305476A
GB 1305476 A
GB1305476 A
GB 1305476A
GB 1305476D A
GB1305476D A
GB 1305476DA
GB 1305476 A
GB1305476 A
GB 1305476A
Authority
GB
United Kingdom
Prior art keywords
trailer
cylinder
piston
valve
brake
Prior art date
1966-04-19
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
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.)
1966-04-19
Filing date
1970-11-20
Publication date
1973-01-31
1966-04-19
Priority claimed from GB4592566A
external-priority
patent/GB1177082A/en
1970-11-20
Application filed
filed
Critical
1973-01-31
Publication of GB1305476A
publication
Critical
patent/GB1305476A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
B60T13/12—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 liquid
B60T13/14—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 liquid using accumulators or reservoirs fed by pumps
B60T13/141—Systems with distributor valve
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
B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
B60T11/108—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic to a trailer fluid system
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
B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
B60T17/18—Safety devices; Monitoring
B60T17/22—Devices for monitoring or checking brake systems; Signal devices
Abstract
1305476 Tractor/trailer brake systems F W PETTIT Ltd 27 Aug 1971 [20 Nov 1970] 55170/70 Addition to 1177082 Heading F2F The parent Specification, especially Fig. 4 thereof, describes an hydraulic brake control arrangement for the brakes of a trailer unit in which fluid from pump 6 is controlled by valve 20 operated by pedal 4 and a manually operated valve 27, 28 diverts fluid to other hydraulic devices on the vehicle and a switch 30 gives an alarm at 32 on failure of pressure. The trailer is connected by flexible coupling 11a, 11b to drive piston 9 which transmits force to a master cylinder 16, 17 feeding the brakes 5. According to the present invention, there is further provided an hydraulic accumulator 61 fed from main pressure line 63 through non-return valve 62, and a manually controlled valve 65 enables this accumulator to be switched on to the trailer cylinder 8 to provide several (diminishing) braking actions. An alarm switch 66 is also connected to the alarm circuit 32, and the fail-safe cylinder, loaded by spring-biased lever 37, is also energized from the accumulator while this is pressurized and still connected. If desired, (Fig. 2, not shown), each brake 5 may be fed from a separate cylinder, both cylinders being operated through a common linkage by the fail-safe system. In a further modification (Fig. 3, not shown) the trailer cylinder 8 has an additional free piston to the left of the piston 9, and normally braking pressure is fed between these pistons to drive the piston 9 to the right. When the manually operated valve 65 is operated, pressure from reservoir 61 is fed to the end of the free piston so that this pushes on the piston 9 to apply the brake as before. Moreover, the trailer brakes may each have a separate cylinder, each with such a free piston in it. In a further modification (Fig. 5, not shown), the operation of the manual valve 65 serves to direct pressure to the fail-safe cylinder 53 and to discharge it to brake the trailer under the action of the fail-safe spring 54.
GB1305476D
1966-04-19
1970-11-20
Expired
GB1305476A
(en)
Applications Claiming Priority (4)
Application Number
Priority Date
Filing Date
Title
GB4592566A
GB1177082A
(en)
1966-04-19
1966-04-19
An Improved Hydraulic Brake System
GB1699166
1966-04-19
GB2049866
1966-05-09
GB5517070
1970-11-20
Publications (1)
Publication Number
Publication Date
GB1305476A
true
GB1305476A
(en)
1973-01-31
Family
ID=27448376
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1305476D
Expired
GB1305476A
(en)
1966-04-19
1970-11-20
Country Status (1)
Country
Link
GB
(1)
GB1305476A
(en)
1970
1970-11-20
GB
GB1305476D
patent/GB1305476A/en
not_active
Expired
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Legal Events
Date
Code
Title
Description
1973-10-31
PS
Patent sealed
1975-11-19
PLE
Entries relating assignments, transmissions, licences in the register of patents
1985-04-17
PCNP
Patent ceased through non-payment of renewal fee
