GB1517561A - Fluid pressure operated actuators - Google Patents
Fluid pressure operated actuatorsInfo
- Publication number
- GB1517561A GB1517561A GB1780675A GB1780675A GB1517561A GB 1517561 A GB1517561 A GB 1517561A GB 1780675 A GB1780675 A GB 1780675A GB 1780675 A GB1780675 A GB 1780675A GB 1517561 A GB1517561 A GB 1517561A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sleeve
- pass
- working stroke
- wear
- ring
- 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
- 239000012530 fluid Substances 0.000 title 1
- 238000005553 drilling Methods 0.000 abstract 2
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
Abstract
1517561 Fluid-pressure actuators AUTOMOTIVE PRODUCTS Ltd 28 April 1976 [29 April 1975] 17806/75 Heading F1D In a fluid-pressure actuator, Fig. 1, a relief valve 10 is provided in a by-pass 12, 9, and the arrangement is such that the valve only opens if movement of the piston is interrupted before completion of a working stroke. In the embodiment shown in Fig. 2, the by-pass comprises passages 21, 22, 23, 24. Passage 23 is provided in a sleeve 18 which closes the by-pass at the end of a working stroke. To adjust the end of the stroke position for wear in the linkages to which the actuator is connected, a manually operable threaded rod 25 is provided which bears on the sleeve 18 through a spring 30. In the embodiment shown in Fig. 3, axially movable sleeves 32, 33 are held against stop-rings 38, 37 by springs 34, 36. The by-pass passage includes an annular groove 40 and radial drillings 41 in the inner sleeve 32. The drillings 41 are uncovered by the outer sleeve 33 until the latter engages an abutment at the end of a working stroke. Wear is automatically compensated by a series of grooves 39, one of which houses the ring 38 which retains the sleeve 32. This ring progressively moves to the left from groove to groove when the ring contacts an abutment at the end of a working stroke as wear becomes greater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1780675A GB1517561A (en) | 1976-04-28 | 1976-04-28 | Fluid pressure operated actuators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1780675A GB1517561A (en) | 1976-04-28 | 1976-04-28 | Fluid pressure operated actuators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1517561A true GB1517561A (en) | 1978-07-12 |
Family
ID=10101559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1780675A Expired GB1517561A (en) | 1976-04-28 | 1976-04-28 | Fluid pressure operated actuators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1517561A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2434291A1 (en) * | 1978-08-24 | 1980-03-21 | Bardet Sa Ets Andre | Hydraulic cylinder for actuating doors of buses - has inbuilt safety bleed to prevent injury to passenger trapped by door |
| FR2463307A1 (en) * | 1979-08-08 | 1981-02-20 | Outillage Air Comprime | Security device for linear actuator on machine tools - has non return valve inside piston rod which equalises pressure on either side of piston |
| US4872472A (en) * | 1980-07-21 | 1989-10-10 | Case Poclain | Fluid pressure regulating valve |
-
1976
- 1976-04-28 GB GB1780675A patent/GB1517561A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2434291A1 (en) * | 1978-08-24 | 1980-03-21 | Bardet Sa Ets Andre | Hydraulic cylinder for actuating doors of buses - has inbuilt safety bleed to prevent injury to passenger trapped by door |
| FR2463307A1 (en) * | 1979-08-08 | 1981-02-20 | Outillage Air Comprime | Security device for linear actuator on machine tools - has non return valve inside piston rod which equalises pressure on either side of piston |
| US4872472A (en) * | 1980-07-21 | 1989-10-10 | Case Poclain | Fluid pressure regulating valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1059332A (en) | Improvements in fluid cylinder cushioning device | |
| GB1004706A (en) | Fluid control actuating device | |
| SE7601784L (en) | HYDRAULIC SERVOM ENGINE | |
| ES246842U (en) | Cylinder-and-piston device | |
| FI844848A0 (en) | HYDRAULIC DRIVEN SLAGANORDNING. | |
| GB589381A (en) | Improvements in or relating to valves for fluid pressure systems | |
| US2949098A (en) | Actuator for service in piston and cylinder devices | |
| US2854958A (en) | Telescopic cylinder assembly | |
| US2847827A (en) | Hydraulic compensating master cylinder | |
| GB1431080A (en) | Booster brake device | |
| US4435960A (en) | Hydraulic power boosters for vehicle hydraulic systems | |
| US3800539A (en) | Tandem master cylinder | |
| US2361130A (en) | Controlling system operated by fluid pressure | |
| GB1517561A (en) | Fluid pressure operated actuators | |
| GB1457388A (en) | Actuators | |
| ES412644A1 (en) | Shutoff valve | |
| US3967539A (en) | Variable stroke fluid cylinder | |
| FR2312399A1 (en) | Tandem master brake cylinder - with non return valve on control piston to prevent premature operation of control piston | |
| US2652780A (en) | Hydraulic pressure booster | |
| GB1184531A (en) | Fluid Operated Device for Applying a Force Against a Workpiece. | |
| US4539892A (en) | Hydraulic brake booster | |
| US3369460A (en) | Hydromechanical lost motion servo valve | |
| GB1387475A (en) | Hydraulic or pneumatic actuators of the cylinder and piston type | |
| US2401892A (en) | Booster brake mechanism | |
| US3035549A (en) | Multi-position power cylinder and control means therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |