GB2000236A - Hydraulic master cylinder - Google Patents
Hydraulic master cylinderInfo
- Publication number
- GB2000236A GB2000236A GB7826480A GB7826480A GB2000236A GB 2000236 A GB2000236 A GB 2000236A GB 7826480 A GB7826480 A GB 7826480A GB 7826480 A GB7826480 A GB 7826480A GB 2000236 A GB2000236 A GB 2000236A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- chamber
- control
- secondary chamber
- brakes
- 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.)
- Granted
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
- B60T11/16—Master control, e.g. master cylinders
- B60T11/20—Tandem, side-by-side, or other multiple master cylinder units
-
- 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
- B60T11/28—Valves specially adapted therefor
- B60T11/34—Pressure reducing or limiting valves
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to two piston (e.g. tandem) master cylinders for use in vehicle hydraulic braking systems. Whilst pressure is building up in the primary chamber 115 for applying one set of brakes, pressure in the secondary chamber 121 is prevented from increasing by virtue of a control piston 125 trapping hydraulic fluid in a control chamber 139. Valve means including a valve member 143, washer 144 and plunger 146 control pressure in the control chamber so that when a predetermined pressure in the primary chamber is reached the control chamber pressure starts to reduce and eventually becomes equal to the secondary chamber pressure. The master cylinder is for use in a split system having drum brakes connected to the primary chamber and disc brakes connected to the secondary chamber. Delaying the build up of secondary chamber pressure allows the effect of the usual drum brake pull-off springs to be overcome without causing undue wear of the disc brakes. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7826480A GB2000236B (en) | 1977-06-17 | 1978-06-07 | Hydraulic master cylinder |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2534277 | 1977-06-17 | ||
GB3475777 | 1977-08-18 | ||
GB7826480A GB2000236B (en) | 1977-06-17 | 1978-06-07 | Hydraulic master cylinder |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2000236A true GB2000236A (en) | 1979-01-04 |
GB2000236B GB2000236B (en) | 1982-01-20 |
Family
ID=26257630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7826480A Expired GB2000236B (en) | 1977-06-17 | 1978-06-07 | Hydraulic master cylinder |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2000236B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0041451A1 (en) * | 1980-06-02 | 1981-12-09 | The Bendix Corporation | Master cylinder with fast fill auxiliary chamber |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1061352A (en) * | 1964-01-30 | 1967-03-08 | Kelsey Hayes Co | Brake pressure proportioning device |
GB1316925A (en) * | 1970-08-05 | 1973-05-16 | Bendix Corp | Pressure metering valve for vehicle braking systems |
-
1978
- 1978-06-07 GB GB7826480A patent/GB2000236B/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1061352A (en) * | 1964-01-30 | 1967-03-08 | Kelsey Hayes Co | Brake pressure proportioning device |
GB1316925A (en) * | 1970-08-05 | 1973-05-16 | Bendix Corp | Pressure metering valve for vehicle braking systems |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0041451A1 (en) * | 1980-06-02 | 1981-12-09 | The Bendix Corporation | Master cylinder with fast fill auxiliary chamber |
Also Published As
Publication number | Publication date |
---|---|
GB2000236B (en) | 1982-01-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |