GB849147A - Improvements in or relating to liquid pressure master cylinders - Google Patents
Improvements in or relating to liquid pressure master cylindersInfo
- Publication number
- GB849147A GB849147A GB1532458A GB1532458A GB849147A GB 849147 A GB849147 A GB 849147A GB 1532458 A GB1532458 A GB 1532458A GB 1532458 A GB1532458 A GB 1532458A GB 849147 A GB849147 A GB 849147A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- cylinder
- master cylinder
- valve element
- liquid
- 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
- B60T11/16—Master control, e.g. master cylinders
- B60T11/228—Pressure-maintaining arrangements, e.g. for replenishing the master cylinder chamber with fluid from a reservoir
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
849,147. Hydraulic brakes. AUTOMOTIVE PRODUCTS CO. Ltd. April 6, 1959 [May 13, 1958], No. 15324/58. Class 103 (1). In a master cylinder of the kind in which a valve element is provided in association with the master cylinder piston to allow liquid to flow past the latter during its return stroke and maintain the system to which the master cylinder is connected full of liquid even though the master cylinder piston may return more rapidly than the pistons in the wheel brake cylinders or cylinder, the piston 10 is formed with passages 19, 21 connecting an opening in its front face to an annular space 16 surrounding the rear part of the piston and a valve element 25 is provided to close the passage, the valve element being carried by a member 24 which is free to slide to a limited extent on a tubular extension 22 projecting from the front face of the piston head 11, and which has friction contact through V-shaped outwardly diverging limbs 29 of a sealing ring 28 within the cylinder walls 14 so that the member 24 tends to lag behind the piston 10 during movement of the latter. In operation, when the master cylinder piston 10 is applied the piston is advanced in the cylinder and the V-shaped sealing ring 28 on the member 24 is subjected to a friction drag due to its engagement with the wall 14 of the cylinder which causes the valve element 25 to be pressed against the front face of the piston head 11 to close the axial passage 19 and prevent escape of liquid through passages 19 and 21 to the reservoir (not shown) pressure is therefore built up in the master cylinder and itself tends to keep the valve element 25 firmly against the face of the piston head 11. When the piston 10 is allowed to return, the frictional drag on the sealing ring 28 of the member 24 tends to cause the latter to move away from the face of the piston head 11 and open the axial passage 19, so that at soon as the pressure in the cylinder drops sufficiently, the passages 19 and 21 in the pistons are opened, and free flow of liquid between the cylinder and the reservoir can take place through port 17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1532458A GB849147A (en) | 1958-05-13 | 1958-05-13 | Improvements in or relating to liquid pressure master cylinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1532458A GB849147A (en) | 1958-05-13 | 1958-05-13 | Improvements in or relating to liquid pressure master cylinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB849147A true GB849147A (en) | 1960-09-21 |
Family
ID=10057084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1532458A Expired GB849147A (en) | 1958-05-13 | 1958-05-13 | Improvements in or relating to liquid pressure master cylinders |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB849147A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099380A (en) * | 1975-10-23 | 1978-07-11 | Benditalia S.P.A. | Master-cylinder for hydraulic booster |
| DE4121579A1 (en) * | 1991-06-29 | 1993-01-07 | Teves Gmbh Alfred | Master cylinder for ABS brackets |
| US20180274562A1 (en) * | 2017-03-27 | 2018-09-27 | Sram, Llc | Hydraulic bicycle component control device |
-
1958
- 1958-05-13 GB GB1532458A patent/GB849147A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099380A (en) * | 1975-10-23 | 1978-07-11 | Benditalia S.P.A. | Master-cylinder for hydraulic booster |
| DE4121579A1 (en) * | 1991-06-29 | 1993-01-07 | Teves Gmbh Alfred | Master cylinder for ABS brackets |
| US20180274562A1 (en) * | 2017-03-27 | 2018-09-27 | Sram, Llc | Hydraulic bicycle component control device |
| US10611433B2 (en) * | 2017-03-27 | 2020-04-07 | Sram, Llc | Hydraulic bicycle component control device |
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