GB703784A - Improvements in or relating to disc brakes for road and other vehicles - Google Patents
Improvements in or relating to disc brakes for road and other vehiclesInfo
- Publication number
- GB703784A GB703784A GB1965751A GB1965751A GB703784A GB 703784 A GB703784 A GB 703784A GB 1965751 A GB1965751 A GB 1965751A GB 1965751 A GB1965751 A GB 1965751A GB 703784 A GB703784 A GB 703784A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- piston
- cylinders
- liquid
- master cylinder
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/228—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
703,784. Disc brakes. GIRLING, Ltd. Aug. 21, 1952 [Aug. 21, 1951; Jan. 2, 1952], Nos. 19657/51 and 130/52. Class 103(1) In a vehicle disc brake of the type described in Specification 688,382 wherein friction pads 11 on both sides of the disc 10 are applied simultaneously by hydraulic pressure from a single common master cylinder or other actuator 18, a suitable restriction 20 is inserted in the pipe 17 leading directly from the master cylinder, the restriction having the effect of permitting free passage of fluid between the cylinders but of throttling back flow from the actuator cylinder to the master cylinders. The restriction 20 may in practice take the form of a non-return valve assembly providing a greater resistance to flow in one direction than the other. In the valve assembly shown in Fig. 2, the pipe line to the two actuators is connected at 31 and that to the master cylinder at 32. Pressure from the master cylinder thus initially acts on one face of a piston 34 and moves it to the left together with a valve sleeve 37 thus forcing liquid to the left thereof out through connection 31 to the actuator cylinders. Later, after there has been a build up of pressure behind the sleeve 37 sufficient to compress spring 39, the sleeve 37 is unseated from piston 34 and liquid may flow directly in accordance with the force applied to the pedal. On release of the brakes the return of liquid is limited by the possible rearward movement of the piston 34. If, however, there is a build up of pressure in the actuator cylinders to between 100 and 1000 lbs. per square inch due to temperature rise during a prolonged period of braking or other causes, this pressure may be relieved by raising a valve 42 against a strong spring 44. In one alternative assembly shown diagrammatically in Fig. 3, pressure from the master cylinder is applied to the smaller end of a stepped piston 52, liquid from the larger left hand end being forced through the line 53 to the brake cylinders. When the pressure reaches a certain value it may lift non-return valve 56 and act in the annular recess 61 of the piston to neutralize the differential action. Further application at higher supply pressure takes place past the non-return valve 55 through piston 52. When a negative pressure is left in the pipe leading to the master cylinders, liquid can flow from a reservoir past non- return valves 60 and 58. Other valve assemblies are also described. The invention is particularly applicable to disc brakes having pads in light rubbing contact with the disc as described in Specification 519,787.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1965751A GB703784A (en) | 1951-08-21 | 1951-08-21 | Improvements in or relating to disc brakes for road and other vehicles |
DEG9619A DE1081789B (en) | 1951-08-21 | 1952-08-21 | Hydraulic actuation system for a disc brake especially intended for motor vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1965751A GB703784A (en) | 1951-08-21 | 1951-08-21 | Improvements in or relating to disc brakes for road and other vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB703784A true GB703784A (en) | 1954-02-10 |
Family
ID=10132999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1965751A Expired GB703784A (en) | 1951-08-21 | 1951-08-21 | Improvements in or relating to disc brakes for road and other vehicles |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1081789B (en) |
GB (1) | GB703784A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1095140B (en) * | 1953-12-10 | 1960-12-15 | Dunlop Rubber Co | Hydraulically operated braking system, especially for motor vehicles |
DE1194277B (en) * | 1960-10-29 | 1965-06-03 | Porsche Kg | Hydraulic braking device for disc brakes of vehicles |
GB2147962A (en) * | 1982-12-30 | 1985-05-22 | Nissan Motor | A hydraulic brake system of a wheeled motor vehicle |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1130310B (en) * | 1960-11-23 | 1962-05-24 | Porsche Kg | Hydraulically operated disc brakes for vehicles |
DE1174188B (en) * | 1961-04-26 | 1964-07-16 | Teves Kg Alfred | Hydraulic adjusting device for hydraulically operated disc brakes for motor vehicles |
IT1041762B (en) * | 1975-06-13 | 1980-01-10 | Brembo Bombassei Breda Snc | DISC BRAKE CALIPER FOR MOTORCYCLES |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT157887B (en) * | 1937-12-23 | 1940-02-10 | Friedmann Alex Fa | Device for automatically limiting the free travel of the adjusting elements in flow pressure systems, in particular the brake shoes of motor vehicle brakes. |
US2281538A (en) * | 1939-09-28 | 1942-04-28 | Jr Max Leichsenring | Means for and method of adjusting pressure fluid brake systems |
DE726761C (en) * | 1940-07-17 | 1942-10-20 | Teves Kg Alfred | Safety device for fluid-powered brakes, especially on motor vehicles |
DE726863C (en) * | 1941-01-26 | 1942-10-22 | Knorr Bremse Ag | Hydraulic fluid brake, especially for motor vehicles |
US2345811A (en) * | 1942-08-11 | 1944-04-04 | Wingfoot Corp | Hydraulic brake automatic adjuster |
FR891176A (en) * | 1942-09-16 | 1944-02-29 | Slack adjuster for hydraulically operated brakes and the like | |
GB643106A (en) * | 1944-04-20 | 1950-09-15 | Goodrich Co B F | Line pressure valves for hydraulic brake systems |
-
1951
- 1951-08-21 GB GB1965751A patent/GB703784A/en not_active Expired
-
1952
- 1952-08-21 DE DEG9619A patent/DE1081789B/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1095140B (en) * | 1953-12-10 | 1960-12-15 | Dunlop Rubber Co | Hydraulically operated braking system, especially for motor vehicles |
DE1194277B (en) * | 1960-10-29 | 1965-06-03 | Porsche Kg | Hydraulic braking device for disc brakes of vehicles |
GB2147962A (en) * | 1982-12-30 | 1985-05-22 | Nissan Motor | A hydraulic brake system of a wheeled motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
DE1081789B (en) | 1960-05-12 |
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