GB600949A - Improvements in or relating to brake systems for tractor and trailer vehicle combinations - Google Patents

Improvements in or relating to brake systems for tractor and trailer vehicle combinations

Info

Publication number
GB600949A
GB600949A GB108146A GB108146A GB600949A GB 600949 A GB600949 A GB 600949A GB 108146 A GB108146 A GB 108146A GB 108146 A GB108146 A GB 108146A GB 600949 A GB600949 A GB 600949A
Authority
GB
United Kingdom
Prior art keywords
valve
trailer
master cylinder
brakes
tractor
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
GB108146A
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.)
Automotive Products PLC
Original Assignee
Automotive Products PLC
Filing date
Publication date
Application filed by Automotive Products PLC filed Critical Automotive Products PLC
Publication of GB600949A publication Critical patent/GB600949A/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
    • 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

Landscapes

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

Abstract

600,949. Fluid-pressure brakes. AUTOMOTIVE PRODUCTS CO., Ltd., and CHOUINGS, L. C. Jan. 11, 1946, No. 1081. [Class 103 (i)] A brake system for a tractor-trailer combination comprises a pedal-operated master cylinder 16 connected to slave cylinders operating the tractor brakes 13 and also to a valve 25 controlling a normally open byepass between a reservoir 24 and the output side of a pump 23 which is driven by the transmission and connected to the slave cylinders of the trailer brakes 21 by piping including a flexible hose 52 and quick-release couplings. Actuation of the master cylinder operates the valve 25 to restrict the byepass and thus cause pressure to build up and apply the trailer brakes. The valve, Fig. 2, comprises a body 33 formed with bores 34, 35 and a conical valve seat 36, the reservoir being connected to a port 26, the pump to a port 38 and the slave cylinders of the trailer to a port 27. Pressure-fluid from the master cylinder is admitted through a passage 48 and acts on a cup packing 46 to move a valve element 41 having a conical surface 42 co-operating with the valve seat 36. When the byepass is restricted, the pressure built up in the bore 35 reacts on the valve member so that the trailer brakes are applied in proportion to the amount of depression of the master cylinder pedal. The smaller end 44 of the valve member has a small clearance in the bore 35 to give a dash-pot action to damp the movements of the valve member. The tractor brake system may include a mechanical, hydraulic or pneumatic servomotor. The pump, reservoir and valve may be on the trailer, the pump being driven from the trailer wheels and the flexible hose provided in the connection between the master cylinder and valve. Specification 600,902 is referred to.
GB108146A 1946-01-11 Improvements in or relating to brake systems for tractor and trailer vehicle combinations Expired GB600949A (en)

Publications (1)

Publication Number Publication Date
GB600949A true GB600949A (en) 1948-04-22

Family

ID=1626667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB108146A Expired GB600949A (en) 1946-01-11 Improvements in or relating to brake systems for tractor and trailer vehicle combinations

Country Status (1)

Country Link
GB (1) GB600949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360303A (en) * 1965-05-22 1967-12-26 Renault System for controlling the braking of a vehicle trailer by a fluid circuit which is independent of the towing vehicle brake circuit and utilized for at least one other function in addition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360303A (en) * 1965-05-22 1967-12-26 Renault System for controlling the braking of a vehicle trailer by a fluid circuit which is independent of the towing vehicle brake circuit and utilized for at least one other function in addition

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