GB718892A - Improvements in or relating to valve devices for hydraulic systems - Google Patents
Improvements in or relating to valve devices for hydraulic systemsInfo
- Publication number
- GB718892A GB718892A GB23914/49A GB2391449A GB718892A GB 718892 A GB718892 A GB 718892A GB 23914/49 A GB23914/49 A GB 23914/49A GB 2391449 A GB2391449 A GB 2391449A GB 718892 A GB718892 A GB 718892A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pump
- cylinder
- flow
- piston
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/01—Control of flow without auxiliary power
- G05D7/0126—Control of flow without auxiliary power the sensing element being a piston or plunger associated with one or more springs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Check Valves (AREA)
Abstract
718,892. Fluid-actuated valves. HEAP, O. H. Dec. 15, 1950 [Sept. 16, 1949], No. 23914/49. Class 135 A control valve in a hydraulic system having a pump and a working cylinder wherein the flow of pressure liquid is reversible therebetween, comprises a housing 1 having limbs 2, 3, connected to the cylinder and the pump respectively and a piston chamber 10. In the limb 2 is a slidable spring-loaded valve sleeve member 4 movable away from the conical end of a valve member 6 carrying a piston 9 to control the flow from pump to cylinder. On flow from cylinder to pump, the valve members 4, 6 initially move together resisted by the pressure of the liquid behind the piston 9 which liquid is expelled through an axial passage 12 and radial ports 12a until the valve member 4 engages a stop 16. The valve member 6 then moves away from the member 4 still resisted by the liquid pressure behind the. piston 9 to open communication between the cylinder and pump. In a modification, the passage 12 may be extended upwardly to the upper end of the valve member 6 and co-operate with a loose ball valve or a spring-loaded stem valve in lieu of the sleeve valve member 4. In a further modification, the limbs 2, 3 may be connected by an auxiliary duct having a spring-loaded valve therein controlling the flow from pump to cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB23914/49A GB718892A (en) | 1949-09-16 | 1949-09-16 | Improvements in or relating to valve devices for hydraulic systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB23914/49A GB718892A (en) | 1949-09-16 | 1949-09-16 | Improvements in or relating to valve devices for hydraulic systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB718892A true GB718892A (en) | 1954-11-24 |
Family
ID=10203341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23914/49A Expired GB718892A (en) | 1949-09-16 | 1949-09-16 | Improvements in or relating to valve devices for hydraulic systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB718892A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3211175A (en) * | 1961-04-03 | 1965-10-12 | Edward H Replogle | Valve regulator |
-
1949
- 1949-09-16 GB GB23914/49A patent/GB718892A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3211175A (en) * | 1961-04-03 | 1965-10-12 | Edward H Replogle | Valve regulator |
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