GB1241540A - Improvements in or relating to electrical reed contact devices - Google Patents
Improvements in or relating to electrical reed contact devicesInfo
- Publication number
- GB1241540A GB1241540A GB21878/70A GB2187870A GB1241540A GB 1241540 A GB1241540 A GB 1241540A GB 21878/70 A GB21878/70 A GB 21878/70A GB 2187870 A GB2187870 A GB 2187870A GB 1241540 A GB1241540 A GB 1241540A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- reed
- reeds
- flux
- coil
- 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
- H01H51/00—Electromagnetic relays
- H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
- H01H51/284—Polarised relays
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
1,241,540. Electromagnetic reed contact device. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 6 May, 1970 [9 May, 1969], No. 21878/70. Heading H1N. A reed contact device or unit has a polarizing magnet on one or both reeds adjacent the contact area and the magnet is polarized in a direction normal to the length of the reeds. As shown a sealed magnetic reed relay has a coil 11 surrounding the sealed envelope 3 containing two reeds 5, 7 with a permanent magnet 9 on the reed 5 arranged so that on coil energization to produce a flux in direction P, the additive fluxes in the gap 13 bring the reed ends into engagement. The magnet is strong enough to maintain the contacts closed. On coil energization to produce a flux in the direction Q the flux in the contact area is weakened to permit contact separation. The magnet 9 is such that in the event of excessive flux in direction Q the reed area 15 saturates to prevent reattraction of the reeds. The magnet may bias the contacts closed when the coil is not energized. Magnets may be mounted on both reeds (Fig. 2, not shown). The contacts may be operated by a movable magnet.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6907099A NL6907099A (en) | 1969-05-09 | 1969-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1241540A true GB1241540A (en) | 1971-08-04 |
Family
ID=19806901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21878/70A Expired GB1241540A (en) | 1969-05-09 | 1970-05-06 | Improvements in or relating to electrical reed contact devices |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3644854A (en) |
| JP (1) | JPS498585B1 (en) |
| BE (1) | BE750188A (en) |
| DE (1) | DE2019415A1 (en) |
| FR (1) | FR2047374A5 (en) |
| GB (1) | GB1241540A (en) |
| NL (1) | NL6907099A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4219823A1 (en) * | 1992-06-17 | 1993-12-23 | Gustav Hahn | Magnetically operated tilt switch with movable magnetically permeable ball - uses longer and shorter glass tubes contg. respectively break-before-make contact set and steel ball displaceable in paraxial direction. |
| US6329618B1 (en) * | 2001-05-18 | 2001-12-11 | Breed Automotive Technology, Inc. | Reed switch with shock sensing mass within the glass capsule |
-
1969
- 1969-05-09 NL NL6907099A patent/NL6907099A/xx unknown
-
1970
- 1970-04-20 US US29888A patent/US3644854A/en not_active Expired - Lifetime
- 1970-04-22 DE DE19702019415 patent/DE2019415A1/en active Pending
- 1970-05-06 GB GB21878/70A patent/GB1241540A/en not_active Expired
- 1970-05-06 FR FR7016531A patent/FR2047374A5/fr not_active Expired
- 1970-05-06 JP JP45037986A patent/JPS498585B1/ja active Pending
- 1970-05-08 BE BE750188D patent/BE750188A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3644854A (en) | 1972-02-22 |
| NL6907099A (en) | 1970-11-11 |
| JPS498585B1 (en) | 1974-02-27 |
| BE750188A (en) | 1970-11-09 |
| FR2047374A5 (en) | 1971-03-12 |
| DE2019415A1 (en) | 1970-11-12 |
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