GB993333A - Improvements in or relating to fluid pressure-operated braking apparatus - Google Patents
Improvements in or relating to fluid pressure-operated braking apparatusInfo
- Publication number
- GB993333A GB993333A GB11433/63A GB1143363A GB993333A GB 993333 A GB993333 A GB 993333A GB 11433/63 A GB11433/63 A GB 11433/63A GB 1143363 A GB1143363 A GB 1143363A GB 993333 A GB993333 A GB 993333A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- pistons
- brakes
- compressed air
- servomotor
- 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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/08—Brake cylinders other than ultimate actuators
- B60T17/10—Two or more cylinders acting on the same brake with means for rendering them effective selectively or successively, the number of effective cylinders being variable
-
- 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
-
- 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
-
- 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
- B60T13/24—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 gaseous
- B60T13/241—Differential pressure systems
- B60T13/246—The control valve is provided apart from the servomotor cylinder
-
- 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
- B60T13/24—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 gaseous
- B60T13/26—Compressed-air systems
- B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
- B60T13/44—Compressed-air systems indirect, i.e. compressed air booster units indirect systems with two-chamber booster 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
- 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
- B60T13/24—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 gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Actuator (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
993,333. Fluid-pressure brakes. CLAYTON DEWANDRE CO. Ltd. March 5, 1964 [March 22, 1963], No. 11433/63. Headings F2E and F2F. In fluid-pressure braking apparatus of the kind having a dual control valve 19 for controlling the admission of compressed air or vacuum from a pair of independent reservoirs 18 to a dual compressed air or vacuum servomotor connected hydraulically with two independent sets of brakes 12, 13, the servomotor consists of a pair of cylinders 1, 2 arranged end-to-end, pistons 5, 6 in the respective cylinders and an operating rod 9 extending coaxially within the cylinders for operating the primary piston 10 of a tandem master cylinder 11 the separate outputs of which are connected to the brakes 12, 13, the rod 9 having abutment surfaces, formed by the rearward end and a shoulder 14 respectively, for contact with the pistons 5, 6 such that the combined thrust of the pistons 5, 6 is normally transmitted to the rod 9 but on failure of either section of the compressed air or vacuum system one piston only moves the rod 9 to actuate the master cylinder with reduced thrust. As shown, the servomotor is designed for operation by compressed air which is admitted to chambers behind the pistons 5, 6 on operation of the dual control valve 19 via pipes 20, 21. The chambers are formed respectively by end wall 1a of cylinder 1 and a dividing wall 3. Spring 16 returns the rod 9 when the brakes are released. A travel indicator is provided comprising a rod 24 contacted by piston 6 and having a coloured mark 26 which when visible indicates the need for brake adjustment. Alternatively an enlargement on the outer end of the rod 24 may operate a switch controlling a buzzer or indicator light (Fig. 3, not shown). Each of the pistons 5, 6 has both a ring seal 7 and a lubricant-impregnated felt or like ring 8.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11433/63A GB993333A (en) | 1963-03-22 | 1963-03-22 | Improvements in or relating to fluid pressure-operated braking apparatus |
US351295A US3196618A (en) | 1963-03-22 | 1964-03-12 | Fluid pressure-operated braking apparatus |
SE03497/64A SE326644B (en) | 1963-03-22 | 1964-03-20 | |
BE645498D BE645498A (en) | 1963-03-22 | 1964-03-20 | |
NL6403027A NL6403027A (en) | 1963-03-22 | 1964-03-20 | |
FR968042A FR1388334A (en) | 1963-03-22 | 1964-03-20 | Safety braking system with fluid pressure control |
DE19641430714 DE1430714A1 (en) | 1963-03-22 | 1964-03-21 | Vehicle brake system with servo device activated by overpressure or underpressure |
ES0297862A ES297862A1 (en) | 1963-03-22 | 1964-03-21 | Fluid pressure-operated braking apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11433/63A GB993333A (en) | 1963-03-22 | 1963-03-22 | Improvements in or relating to fluid pressure-operated braking apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB993333A true GB993333A (en) | 1965-05-26 |
Family
ID=9986164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11433/63A Expired GB993333A (en) | 1963-03-22 | 1963-03-22 | Improvements in or relating to fluid pressure-operated braking apparatus |
Country Status (7)
Country | Link |
---|---|
US (1) | US3196618A (en) |
BE (1) | BE645498A (en) |
DE (1) | DE1430714A1 (en) |
ES (1) | ES297862A1 (en) |
GB (1) | GB993333A (en) |
NL (1) | NL6403027A (en) |
SE (1) | SE326644B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3462986A (en) * | 1967-10-26 | 1969-08-26 | Rockwell Standard Co | Brake actuator |
DE3909904A1 (en) * | 1989-03-25 | 1990-10-04 | Bosch Gmbh Robert | Actuating cylinder, in particular for brakes, clutches or the like |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3371484A (en) * | 1966-03-14 | 1968-03-05 | Bendix Corp | Pedal and button actuated brake systems |
JPS496070B1 (en) * | 1969-03-15 | 1974-02-12 | ||
JPS5111779Y2 (en) * | 1972-09-22 | 1976-03-30 | ||
US4206455A (en) * | 1978-06-09 | 1980-06-03 | Midland-Ross Corporation | Piston overtravel indicator |
US6113367A (en) * | 1999-08-25 | 2000-09-05 | Alliedsignal Truck Brake Systems Company | Oil-less/oil-free air brake compressor with a dual piston arrangement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE730712C (en) * | 1940-09-15 | 1943-01-16 | Knorr Bremse Ag | Compressed air brake with contact and locking piston |
US2726738A (en) * | 1951-02-07 | 1955-12-13 | Thomas L Fawick | Hydraulic, pneumatic and vacuum operated brakes |
US2762396A (en) * | 1952-08-23 | 1956-09-11 | Thomas L Fawick | Diaphragm and piston assembly |
US2809723A (en) * | 1955-02-23 | 1957-10-15 | Insley Mfg Corp | Parking brake |
US2936785A (en) * | 1956-06-13 | 1960-05-17 | Hoppenstand Motors Inc | Double diaphragm air cylinder |
GB837576A (en) * | 1957-12-10 | 1960-06-15 | Dewandre Co Ltd C | Improvements in or relating to fluid-pressure operated braking apparatus for vehicles |
-
1963
- 1963-03-22 GB GB11433/63A patent/GB993333A/en not_active Expired
-
1964
- 1964-03-12 US US351295A patent/US3196618A/en not_active Expired - Lifetime
- 1964-03-20 BE BE645498D patent/BE645498A/xx unknown
- 1964-03-20 NL NL6403027A patent/NL6403027A/xx unknown
- 1964-03-20 SE SE03497/64A patent/SE326644B/xx unknown
- 1964-03-21 ES ES0297862A patent/ES297862A1/en not_active Expired
- 1964-03-21 DE DE19641430714 patent/DE1430714A1/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3462986A (en) * | 1967-10-26 | 1969-08-26 | Rockwell Standard Co | Brake actuator |
DE3909904A1 (en) * | 1989-03-25 | 1990-10-04 | Bosch Gmbh Robert | Actuating cylinder, in particular for brakes, clutches or the like |
Also Published As
Publication number | Publication date |
---|---|
ES297862A1 (en) | 1964-07-01 |
BE645498A (en) | 1964-07-16 |
DE1430714A1 (en) | 1968-10-31 |
US3196618A (en) | 1965-07-27 |
NL6403027A (en) | 1964-09-23 |
SE326644B (en) | 1970-07-27 |
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