GB786653A - Improvements relating to fluid pressure braking systems for tractor-trailor vehicles - Google Patents
Improvements relating to fluid pressure braking systems for tractor-trailor vehiclesInfo
- Publication number
- GB786653A GB786653A GB741655A GB741655A GB786653A GB 786653 A GB786653 A GB 786653A GB 741655 A GB741655 A GB 741655A GB 741655 A GB741655 A GB 741655A GB 786653 A GB786653 A GB 786653A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tractor
- via port
- valve
- vehicles
- pressure
- 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
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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
786,653. Fluid-pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and KIRK, W. A. March 13, 1956 [March 14, 1955], No. 7416/55. Class 103 (1). In a fluid-pressure braking system for tractortrailer vehicles having service and emergency pipe-lines, a valve device on the tractor vehicle comprises a valve 10 controlling a communication between the tractor reservoir, via port 6, and the emergency pipe line, via port 8, and a second valve 19 controlling communication between the manually operable tractor control valve, via port 15, and the service pipe line, via port 16; both valves 10 and 19 being biased to their closed positions by springs 11 and 20, respectively and to be normally held open by a piston 3, formed with a stem 23, subjected to the tractor reservoir pressure and to the opposing action of a control spring 4 so long as the tractor reservoir pressure exceeds a value determined by the strength of the spring 4. The valves 10 and 11 are automatically closed when the tractor reservoir pressure falls below this value so that the tractor reservoir is not vented to atmosphere should the trailer break away from its tractor. Specification 683,350 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB741655A GB786653A (en) | 1955-03-14 | 1955-03-14 | Improvements relating to fluid pressure braking systems for tractor-trailor vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB741655A GB786653A (en) | 1955-03-14 | 1955-03-14 | Improvements relating to fluid pressure braking systems for tractor-trailor vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB786653A true GB786653A (en) | 1957-11-20 |
Family
ID=9832711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB741655A Expired GB786653A (en) | 1955-03-14 | 1955-03-14 | Improvements relating to fluid pressure braking systems for tractor-trailor vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB786653A (en) |
-
1955
- 1955-03-14 GB GB741655A patent/GB786653A/en not_active Expired
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