GB1264156A - - Google Patents
Info
- Publication number
- GB1264156A GB1264156A GB1264156DA GB1264156A GB 1264156 A GB1264156 A GB 1264156A GB 1264156D A GB1264156D A GB 1264156DA GB 1264156 A GB1264156 A GB 1264156A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- nut
- pin
- pressure
- valve
- 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
-
- 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
- B60T17/12—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 according to vehicle weight
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
1,264,156. Brakes. KNORR-BREMSE G.m.b.H. 10 June, 1969 [21 June, 1968], No. 29451/69. Heading F2F. A double brake cylinder for rail vehicles has an applying piston 13 acting through rod 18 to apply the brake, and a second piston 10 which adds its effort to piston 13 in proportion to the loading of the vehicle. Pressure from control valve 1 via pipe 5 moves the applying piston 13 against its return spring 19 in a rightward direction, drawing a threaded head-pin 14 with it. A freely running nut 35 on this pin rotates on bearings 38, 40 under the influence of spring 39, to follow up this motion until it is arrested by engagement between the nut and a shoulder 46 inside the piston 10. Normally, in the deenergized position shown, a valve 23, 26 prevents feed of pressure through pipe 2 to the piston 10, and moreover a further valve 23, 21 vents it to atmosphere. Rightward movement of the nut 35 on actuation of piston 13, reverses the conditions of these valves, by withdrawal of pin 14 which holds the valves in their normal condition against spring pressure. If the vehicle is loaded, pressure is supplied to pipe 2, which now, because valve 23, 26 is open and 23, 21 closed, acts on piston 10 to move it rightward. This movement engages the nut and shoulder surfaces 46, 47 to prevent the nut running back and the two pistons move together, the holding piston applying an additional force proportional to the load through the nut and pin 14 to the piston 13 and so to the rod 18.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681755783 DE1755783C3 (en) | 1968-06-21 | Double brake cylinders, in particular for braking devices for rail vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1264156A true GB1264156A (en) | 1972-02-16 |
Family
ID=5693653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1264156D Expired GB1264156A (en) | 1968-06-21 | 1969-06-10 |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT297788B (en) |
| CH (1) | CH481777A (en) |
| FR (1) | FR2011416A1 (en) |
| GB (1) | GB1264156A (en) |
| NL (1) | NL6909303A (en) |
| RO (1) | RO60837A (en) |
| SE (2) | SE343022B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE392435B (en) * | 1975-02-19 | 1977-03-28 | Blomberg Folke Ivar | LOAD PREVENTION UNIT FOR BUILDING INTO A HYDRAULIC FLUID CIRCUIT |
| FR2445251A1 (en) * | 1978-12-29 | 1980-07-25 | Wabco Westinghouse | TWO-PISTON BRAKE CYLINDER |
| FR2472496A1 (en) * | 1979-12-28 | 1981-07-03 | Wabco Westinghouse | Fluid pressure two-piston brake cylinder - in which one piston is hydraulically operated and other spring-held and unlocked by fluid pressure |
| FR2492330A1 (en) * | 1980-10-21 | 1982-04-23 | Wabco Westinghouse | BRAKE CYLINDER WITH TWO PISTONS |
-
1968
- 1968-06-21 AT AT05110/69A patent/AT297788B/en not_active IP Right Cessation
-
1969
- 1969-05-22 CH CH786169A patent/CH481777A/en not_active IP Right Cessation
- 1969-05-30 RO RO60126A patent/RO60837A/ro unknown
- 1969-06-10 GB GB1264156D patent/GB1264156A/en not_active Expired
- 1969-06-18 NL NL6909303A patent/NL6909303A/xx unknown
- 1969-06-18 SE SE8699/69A patent/SE343022B/xx unknown
- 1969-06-18 SE SE13289/71A patent/SE363773B/xx unknown
- 1969-06-20 FR FR6920730A patent/FR2011416A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| SE363773B (en) | 1974-02-04 |
| AT297788B (en) | 1972-04-10 |
| RO60837A (en) | 1976-10-15 |
| FR2011416A1 (en) | 1970-02-27 |
| CH481777A (en) | 1969-11-30 |
| SE343022B (en) | 1972-02-28 |
| DE1755783B2 (en) | 1975-10-30 |
| NL6909303A (en) | 1969-12-23 |
| DE1755783A1 (en) | 1971-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |