GB785620A - Improvements relating to fluid pressure braking systems for road vehicles - Google Patents
Improvements relating to fluid pressure braking systems for road vehiclesInfo
- Publication number
- GB785620A GB785620A GB674355A GB674355A GB785620A GB 785620 A GB785620 A GB 785620A GB 674355 A GB674355 A GB 674355A GB 674355 A GB674355 A GB 674355A GB 785620 A GB785620 A GB 785620A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- passage
- communication
- rod
- fluid 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
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
785,620. Fluid-pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and SIMMONS, A. W. March 8, 1956 [March 8, 1955], No. 6743/55. Class 103 (1). In a fluid pressure braking system for road vehicles of the kind in which the brakes are operated by compressed air or vacuum under the control of a pedal operated control valve, an additional valve member is connected to the exhaust passage of the control valve to control communication between this passage and external atmosphere, the additional valve being normally open and arranged to be closed by the driver of the vehicle to close the exhaust passage and prevent release of the fluid pressure brakes when, for example, it is desired to increase the power of the hand brake when starting from rest on a steep hill so that both feet of the driver are free to operate the accelerator and clutch pedals of the vehicle. The additional valve member 13 is housed in a casing 1 in which is slidably mounted an adjustable operating rod 2 which may be coupled at its cross-head 4 to the handbrake lever so that when the latter is in its release position the parts of the valve occupy the position illustrated; the valve member 13 being held off the valve seat rib 11 against the action of spring 15 by the reduced end 12 of rod 2 to permit free communication between passage 9 leading to the exhaust port of pedal control valve (not shown) and passage 6 communication with external atmosphere. When hand brake lever is moved to a braking position the rod 2 is moved to withdraw reduced end 12 of rod 2 from engagement with valve member 13 to close communication between passages 9 and 6. Alternatively, the additional valve may be opened and closed by means other than the hand brake lever mounted, for example, on the dashboard of the vehicle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB674355A GB785620A (en) | 1955-03-08 | 1955-03-08 | Improvements relating to fluid pressure braking systems for road vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB674355A GB785620A (en) | 1955-03-08 | 1955-03-08 | Improvements relating to fluid pressure braking systems for road vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB785620A true GB785620A (en) | 1957-10-30 |
Family
ID=9819971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB674355A Expired GB785620A (en) | 1955-03-08 | 1955-03-08 | Improvements relating to fluid pressure braking systems for road vehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB785620A (en) |
-
1955
- 1955-03-08 GB GB674355A patent/GB785620A/en not_active Expired
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