GB504278A - Improved safety device for hydraulic transmission - Google Patents
Improved safety device for hydraulic transmissionInfo
- Publication number
- GB504278A GB504278A GB28475/37A GB2847537A GB504278A GB 504278 A GB504278 A GB 504278A GB 28475/37 A GB28475/37 A GB 28475/37A GB 2847537 A GB2847537 A GB 2847537A GB 504278 A GB504278 A GB 504278A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- valve
- brakes
- conduit
- 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
-
- 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
- B60T11/32—Automatic cut-off valves for defective pipes
- B60T11/323—Automatic cut-off valves for defective pipes in hydraulic systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Arrangements (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
504,278. Hydraulic transmission of power. SOC. ANON. DES ATELIERS GAMAIN. Oct. 19, 1937, Nos. 28475, 28476, 28477, and 28478. Convention dates, Oct. 19, 1936, March 1, 1937, July 16, 1937, and Oct. 6, 1937. [Class 69 (ii)] [Also in Group XXXIV] Hydraulic transmission particularly for brakes comprises a device in each conduit leading to the brakes arranged to close this conduit from the rest of the system in case of leakage and also adapted to adjust the system for wear. The device comprises a piston 2 containing valves which provide communication between the pipe 17 connected to the master cylinder and the pipe 12 connected to the brake when the piston is at the end of its cylinder 1 nearest the brakes when the pressure difference between the two pipes does not exceed a predetermined value. The piston 2 is forced from one end of the cylinder 1 to the other at each brake application and if wear has occurred the piston stroke increases and a hollow rod 8 engages the end of the cylinder, opens a valve 6 and allows liquid to pass through the piston, to take up the wear. If leakage occurs in the pipe 12, pressure above a piston 14 drops to zero and the pressure below this piston transmitted from the master cylinder via a passage 18 raises the piston and closes the conduit 12 by means of a valve 13. The valve 13 will remain on its seat after release of the brakes if a slight pressure is maintained on the fluid in conduit 17. In a modification, when leakage occurs the rod 8 abuts the end of the cylinder, opens the valve 6, causes cups 26, 27 to abut and holds the valve 5 on its seat to close off the conduit 12. In a further modification the ball valves and cups are replaced by a single ball valve pressed towards the rod 8 by a spring and in a still further modification this ball is replaced by two valves telescoped together. This modification is adapted to release back to the master cylinder excess liquid which may have been forced to the brakes owing to expansion of the brake drums.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE504278X | 1936-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB504278A true GB504278A (en) | 1939-04-19 |
Family
ID=3870864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28475/37A Expired GB504278A (en) | 1936-10-19 | 1937-10-19 | Improved safety device for hydraulic transmission |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE418012A (en) |
DE (1) | DE694751C (en) |
GB (1) | GB504278A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2467517A (en) * | 1946-01-04 | 1949-04-19 | Midland Steel Prod Co | Power unit for hydraulic brakes |
US2523172A (en) * | 1948-07-24 | 1950-09-19 | Wilson Palmer Clyde | Adjustment mechanism for hydraulic brakes |
US2544849A (en) * | 1946-01-23 | 1951-03-13 | Bendix Aviat Corp | Hydraulic brake automatic adjuster |
US2551081A (en) * | 1950-02-24 | 1951-05-01 | Cruz R Alvarez | Automatic hydraulic brake adjuster |
US2583825A (en) * | 1950-02-23 | 1952-01-29 | Arthur J Felt | Hydraulic brake safety device |
US2593192A (en) * | 1945-10-06 | 1952-04-15 | Borg Warner | Accessory hydraulic adjuster |
US2926499A (en) * | 1958-03-14 | 1960-03-01 | Goodrich Co B F | Hydraulic mechanism |
US2972865A (en) * | 1959-05-11 | 1961-02-28 | Chicago Railway Equipment Co | Fluid pressure take-up |
US2974493A (en) * | 1959-08-13 | 1961-03-14 | Goodyear Tire & Rubber | Displacement saver |
-
0
- BE BE418012D patent/BE418012A/xx unknown
-
1937
- 1937-10-17 DE DE1937S0129179 patent/DE694751C/en not_active Expired
- 1937-10-19 GB GB28475/37A patent/GB504278A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2593192A (en) * | 1945-10-06 | 1952-04-15 | Borg Warner | Accessory hydraulic adjuster |
US2467517A (en) * | 1946-01-04 | 1949-04-19 | Midland Steel Prod Co | Power unit for hydraulic brakes |
US2544849A (en) * | 1946-01-23 | 1951-03-13 | Bendix Aviat Corp | Hydraulic brake automatic adjuster |
US2523172A (en) * | 1948-07-24 | 1950-09-19 | Wilson Palmer Clyde | Adjustment mechanism for hydraulic brakes |
US2583825A (en) * | 1950-02-23 | 1952-01-29 | Arthur J Felt | Hydraulic brake safety device |
US2551081A (en) * | 1950-02-24 | 1951-05-01 | Cruz R Alvarez | Automatic hydraulic brake adjuster |
US2926499A (en) * | 1958-03-14 | 1960-03-01 | Goodrich Co B F | Hydraulic mechanism |
US2972865A (en) * | 1959-05-11 | 1961-02-28 | Chicago Railway Equipment Co | Fluid pressure take-up |
US2974493A (en) * | 1959-08-13 | 1961-03-14 | Goodyear Tire & Rubber | Displacement saver |
Also Published As
Publication number | Publication date |
---|---|
DE694751C (en) | 1940-08-07 |
BE418012A (en) |
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