GB813553A - Improvements in or relating to differential pressure electric switches - Google Patents
Improvements in or relating to differential pressure electric switchesInfo
- Publication number
- GB813553A GB813553A GB2687756A GB2687756A GB813553A GB 813553 A GB813553 A GB 813553A GB 2687756 A GB2687756 A GB 2687756A GB 2687756 A GB2687756 A GB 2687756A GB 813553 A GB813553 A GB 813553A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- differential pressure
- hydraulic pressures
- relating
- sept
- 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
- 230000000875 corresponding Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
Abstract
813,553. Hydraulic actuation of switches. GLOSTER AIRCRAFT CO. Ltd. Sept. 3,1957 [Sept. 3, 1956], No. 26877/56. Class 38 (5). A switch which is operated only when the difference between two hydraulic pressures is unequal to the difference between two other hydraulic pressures comprises a body 1 having two pistons 4, 4a. The piston 4 is acted on by hydraulic pressures fed via ports 2, 3 such that it pushes against a rod 4<SP>1</SP> which in turn engages a member 5 abutting a corresponding member 5a opposedly urged by piston 4a. Telescopic members 6, 6a, held apart by a spring 8, carry contacts 7, 7a wired to connector pins 9, 9a. Should the differential pressure on piston 4 exceed that on piston 4a, for example, the piston 4a is pushed to the left and a flange on member 5 bears against member 6 to compress spring 8 and bring contacts 7, 7a into engagement.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB813553A true GB813553A (en) | 1959-05-21 |
Family
ID=1740278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2687756A Expired GB813553A (en) | 1956-09-03 | Improvements in or relating to differential pressure electric switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB813553A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3674954A (en) * | 1970-06-19 | 1972-07-04 | Midland Ross Corp | Pressure responsive mechanism |
| US3737603A (en) * | 1970-06-19 | 1973-06-05 | Midland Ross Corp | Pressure responsive piston acuated switch and valve means |
| FR2729758A1 (en) * | 1995-01-23 | 1996-07-26 | Pall Corp | DIFFERENTIAL PRESSURE INDICATOR |
-
1956
- 1956-09-03 GB GB2687756A patent/GB813553A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3674954A (en) * | 1970-06-19 | 1972-07-04 | Midland Ross Corp | Pressure responsive mechanism |
| US3737603A (en) * | 1970-06-19 | 1973-06-05 | Midland Ross Corp | Pressure responsive piston acuated switch and valve means |
| FR2729758A1 (en) * | 1995-01-23 | 1996-07-26 | Pall Corp | DIFFERENTIAL PRESSURE INDICATOR |
| NL1002159C2 (en) * | 1995-01-23 | 1998-11-05 | Pall Corp | Differential pressure indicator |
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