GB1420149A - Dual hydraulic brake valves - Google Patents
Dual hydraulic brake valvesInfo
- Publication number
- GB1420149A GB1420149A GB1905773A GB1905773A GB1420149A GB 1420149 A GB1420149 A GB 1420149A GB 1905773 A GB1905773 A GB 1905773A GB 1905773 A GB1905773 A GB 1905773A GB 1420149 A GB1420149 A GB 1420149A
- Authority
- GB
- United Kingdom
- Prior art keywords
- passage
- reaction
- port
- valve
- piston
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Control Valves For Brake Systems (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
1420149 Dual brake valves CLAYTON DEWANDRE CO Ltd 16 April 1974 [19 April 1973] 19057/73 Heading F2F A dual brake valve which controls two independent circuits actuating separate sets of brakes has two valve assemblies operable simultaneously through a balance beam 1 displaced by pedal-actuated input plunger 3 and at least part of a reaction force is created by a reaction mechanism other than through the beam. As shown, each valve assembly comprises a plunger 7 one end of which forms an exhaust valve seat 8 which when engaged by a poppet type valve element 9 cuts off communication between a brake connected port 12 and an exhaust connection 15. Further movement of the element 9 lifts the head thereof from an annular valve seat 11 to establish communication between an accumulator connection 13 and port 12. The beam 1 is pivoted to a carrier 5 forming part of the plunger 3 and spring biased reaction pistons 17, 18 accommodated in a bore 16 act on the carrier 5 through a pad 5a to provide the reaction force independent of beam 1. A passage 19 leads from one end of bore 16 to the port 12 of one valve assembly and the space between pistons 17, 18 is connected by a passage 20 to the port 12 of the other assembly. If the fluid pressure into passage 19 fails, piston 18 provides the reaction, and if fluid pressure to passage 20 fails, piston 17 transmits reaction through piston 18. A passage 23 provides a visual indication of failure of either of seals 22.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1905773A GB1420149A (en) | 1973-04-19 | 1973-04-19 | Dual hydraulic brake valves |
DE19742418489 DE2418489B2 (en) | 1973-04-19 | 1974-04-17 | PRESSURE CONTROL DEVICE FOR A HYDRAULIC DUAL CIRCUIT BRAKE SYSTEM FOR MOTOR VEHICLES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1905773A GB1420149A (en) | 1973-04-19 | 1973-04-19 | Dual hydraulic brake valves |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1420149A true GB1420149A (en) | 1976-01-07 |
Family
ID=10123040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1905773A Expired GB1420149A (en) | 1973-04-19 | 1973-04-19 | Dual hydraulic brake valves |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2418489B2 (en) |
GB (1) | GB1420149A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3205622A1 (en) * | 1981-02-19 | 1982-09-16 | Fabbrica Italiana Magneti Marelli S.p.A., Milano | COMPRESSED AIR DISTRIBUTORS FOR VEHICLE COMPRESSED AIR BRAKING SYSTEMS |
CN101857019A (en) * | 2010-05-18 | 2010-10-13 | 河南昌通科技有限公司 | Two-stage stab-braking double-cavity parallel arrangement type brake master valve |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1585515A (en) * | 1977-05-20 | 1981-03-04 | Dewandre Co Ltd C | Spool type brake valves |
DE2728751C2 (en) * | 1977-06-25 | 1981-03-26 | Wabco Westinghouse Fahrzeugbremsen GmbH, 30453 Hannover | Control valve for modulating a consumer pressure, in particular brake pressure |
DE3542418A1 (en) * | 1985-11-30 | 1987-06-04 | Teves Gmbh Alfred | HYDRAULIC POWER AMPLIFIER |
FR2593131B1 (en) * | 1986-01-22 | 1990-11-30 | Bendix France | HYDRAULIC ASSISTANCE DEVICE. |
-
1973
- 1973-04-19 GB GB1905773A patent/GB1420149A/en not_active Expired
-
1974
- 1974-04-17 DE DE19742418489 patent/DE2418489B2/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3205622A1 (en) * | 1981-02-19 | 1982-09-16 | Fabbrica Italiana Magneti Marelli S.p.A., Milano | COMPRESSED AIR DISTRIBUTORS FOR VEHICLE COMPRESSED AIR BRAKING SYSTEMS |
CN101857019A (en) * | 2010-05-18 | 2010-10-13 | 河南昌通科技有限公司 | Two-stage stab-braking double-cavity parallel arrangement type brake master valve |
Also Published As
Publication number | Publication date |
---|---|
DE2418489B2 (en) | 1976-07-22 |
DE2418489A1 (en) | 1974-11-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |