GB611950A - Improved means for controlling electrical circuits by fluid pressure - Google Patents
Improved means for controlling electrical circuits by fluid pressureInfo
- Publication number
- GB611950A GB611950A GB1450646A GB1450646A GB611950A GB 611950 A GB611950 A GB 611950A GB 1450646 A GB1450646 A GB 1450646A GB 1450646 A GB1450646 A GB 1450646A GB 611950 A GB611950 A GB 611950A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- energized
- diaphragm
- pressure
- close
- 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
- 239000000446 fuel Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 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
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
611,950. Actuation of switches. SEGRAVE, C. R., WILLIAMS, T. B. GLYNNE-, and BARKER, H. H. May 14, 1946, No. 14506. [Class 38 (v)] A fluid-pressure actuated switch comprises a spring-pressed plunger, Fig. 1 (not shown), bearing on a diaphragm 3 and on a bridge-piece 9 carrying spring-loaded contacts 10, 12 cooperating with adjustable fixed contacts 11, 13. On an increase in pressure, the bridge 9 moves upwards and, first contacts 10, 11 close and then, if the increase is maintained, contacts 12, 13 close. The former prepare the circuit of a relay coil 21, which is energized when contacts 12, 13 close, thereby closing contacts 22 to energize a control unit 23. If the pressure now drops, contacts 12, 13 reopen, but, owing to a shunt connection 24, the coil 21 remains energized until contacts 10, 11 open. The coil is therefore de-energized at a lower pressure than that at which it is energized. The diaphragm may be exposed to the intake duct or the liquid-fuel pipe of a liquid-fuel heating system of an aircraft so as to cut out the control unit 23 if the aircraft is grounded or the pipe breaks. The diaphragm may be replaced by a piston or a coiled tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1450646A GB611950A (en) | 1946-05-14 | 1946-05-14 | Improved means for controlling electrical circuits by fluid pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1450646A GB611950A (en) | 1946-05-14 | 1946-05-14 | Improved means for controlling electrical circuits by fluid pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB611950A true GB611950A (en) | 1948-11-05 |
Family
ID=10042424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1450646A Expired GB611950A (en) | 1946-05-14 | 1946-05-14 | Improved means for controlling electrical circuits by fluid pressure |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB611950A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1010611B (en) * | 1953-04-27 | 1957-06-19 | Jean Mercier | Pressure fluid operated electrical switching device |
| US3490342A (en) * | 1967-04-18 | 1970-01-20 | United Electric Controls Co | Pressure control device |
| EP2800076A3 (en) * | 2013-04-30 | 2016-03-02 | Kidde Technologies, Inc. | Pneumatic pressure switch |
-
1946
- 1946-05-14 GB GB1450646A patent/GB611950A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1010611B (en) * | 1953-04-27 | 1957-06-19 | Jean Mercier | Pressure fluid operated electrical switching device |
| US3490342A (en) * | 1967-04-18 | 1970-01-20 | United Electric Controls Co | Pressure control device |
| EP2800076A3 (en) * | 2013-04-30 | 2016-03-02 | Kidde Technologies, Inc. | Pneumatic pressure switch |
| US9330556B2 (en) | 2013-04-30 | 2016-05-03 | Kidde Technologies, Inc. | Pneumatic pressure switch |
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