GB704957A - Improvements in or relating to electric switches required to operate when an appliedforce reaches a predetermined magnitude - Google Patents
Improvements in or relating to electric switches required to operate when an appliedforce reaches a predetermined magnitudeInfo
- Publication number
- GB704957A GB704957A GB2486150A GB2486150A GB704957A GB 704957 A GB704957 A GB 704957A GB 2486150 A GB2486150 A GB 2486150A GB 2486150 A GB2486150 A GB 2486150A GB 704957 A GB704957 A GB 704957A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- gust
- held
- detected
- armature
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
704,957. Partly magnetic switches; actuation of switches. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 19, 1951 [Oct. 11, 1950], No. 24861/50. Class 38(5) A switch responsive to changes in fluid pressure comprises an armature exposed directly to the fluid and movable from a rest position in which it is held by magnetic attraction through a neutral position to a second rest position in which it is held by a second magnetic attraction. In the form shown in Fig. 1, explosions of gases in closed vessels are detected by the gas lifting an armature 29, which has a bleed hole in its centre, away from a ring magnet 26 and towards magnets such as 36a in which latter position it bridges contacts 30a, 30b. Fig. 3 shows a gust detector switch for use in aircraft. A sudden. rise in air pressure in pipe 65 moves vanes 70, 71, 72 into their other position in which contacts 61, 62 are bridged instead of 60, 61, or vice versa. A horse shoe magnet 52 attracts either vane 70 or 71. Closure of contacts 61, 62 operates a gust alleviating device and also a slow relay which changes over contacts so as to make 60 alive and 62 dead, so that the next gust is also detected and alleviated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2486150A GB704957A (en) | 1950-10-11 | 1950-10-11 | Improvements in or relating to electric switches required to operate when an appliedforce reaches a predetermined magnitude |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2486150A GB704957A (en) | 1950-10-11 | 1950-10-11 | Improvements in or relating to electric switches required to operate when an appliedforce reaches a predetermined magnitude |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB704957A true GB704957A (en) | 1954-03-03 |
Family
ID=10218403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2486150A Expired GB704957A (en) | 1950-10-11 | 1950-10-11 | Improvements in or relating to electric switches required to operate when an appliedforce reaches a predetermined magnitude |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB704957A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2131614A (en) * | 1982-11-22 | 1984-06-20 | Gen Electric Co Plc | Electrical switch |
| GB2132020A (en) * | 1982-11-22 | 1984-06-27 | Gen Electric | Pneumatic ball contact switch |
| US6815639B2 (en) | 2000-03-31 | 2004-11-09 | Illinois Tool Works Inc. | Method and apparatus for receiving a universal input voltage in a welding, plasma or heating power source |
| WO2006048136A1 (en) * | 2004-10-29 | 2006-05-11 | Rohde & Schwarz Gmbh & Co. Kg | Electric switching device comprising magnetic and/or fluidic adjusting elements |
-
1950
- 1950-10-11 GB GB2486150A patent/GB704957A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2131614A (en) * | 1982-11-22 | 1984-06-20 | Gen Electric Co Plc | Electrical switch |
| GB2132020A (en) * | 1982-11-22 | 1984-06-27 | Gen Electric | Pneumatic ball contact switch |
| US6815639B2 (en) | 2000-03-31 | 2004-11-09 | Illinois Tool Works Inc. | Method and apparatus for receiving a universal input voltage in a welding, plasma or heating power source |
| US6987242B2 (en) | 2000-03-31 | 2006-01-17 | Illinois Tool Works Inc. | Method and apparatus for receiving a universal input voltage in a welding, plasma or heating power source |
| US7235759B2 (en) | 2000-03-31 | 2007-06-26 | Illinois Tool Works Inc. | Method and apparatus for receiving a universal input voltage in a welding, plasma or heating power source |
| WO2006048136A1 (en) * | 2004-10-29 | 2006-05-11 | Rohde & Schwarz Gmbh & Co. Kg | Electric switching device comprising magnetic and/or fluidic adjusting elements |
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