GB1373225A - Magnetic reed contact devices - Google Patents
Magnetic reed contact devicesInfo
- Publication number
- GB1373225A GB1373225A GB5760971A GB5760971A GB1373225A GB 1373225 A GB1373225 A GB 1373225A GB 5760971 A GB5760971 A GB 5760971A GB 5760971 A GB5760971 A GB 5760971A GB 1373225 A GB1373225 A GB 1373225A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- reed
- magnetic
- air gap
- gap
- 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
- H01H51/287—Details of the shape of the contact springs
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Contacts (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
1373225 Magnetic reed contact units FUJITSU Ltd 10 Dec 1971 [11 Dec 1970] 57609/71 Heading H1N In order to ensure that the contacts of a sealed magnetic reed contact unit open and close at substantially the same flux values, the main air gap is arranged to change in area rather than length. Fig. 4, shows the ends of two reeds 41, 43 normally out of alignment with an air gap t between them. When subjected to a magnetic field the reeds 41, 43 tend to align and bring non-magnetic contacts 42, 44 into engagement. The contact gap X 2 is less than the normal displacement between the centres of the reed ends so that member 42 which is of spring material bends to give a wiping action. The member 42 may be cranked to provide a larger contact gap (Fig. 5b, not shown), or may be an integral part 822 of a reed 812 (Fig. 8d). Thus providing a part which is directly overlapping the other contact and also provides a variable air gap. The contact end may be divided (Fig. 8e, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP45109398A JPS4911511B1 (en) | 1970-12-11 | 1970-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1373225A true GB1373225A (en) | 1974-11-06 |
Family
ID=14509220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5760971A Expired GB1373225A (en) | 1970-12-11 | 1971-12-10 | Magnetic reed contact devices |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3716810A (en) |
| JP (1) | JPS4911511B1 (en) |
| DE (1) | DE2158875A1 (en) |
| FR (1) | FR2117621A5 (en) |
| GB (1) | GB1373225A (en) |
| NL (1) | NL158646B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2204449A (en) * | 1986-08-23 | 1988-11-09 | Stc Plc | Reed relay contacts |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4085392A (en) * | 1976-01-14 | 1978-04-18 | Gordos Corporation | Reed switch construction |
| JPS547705U (en) * | 1977-06-16 | 1979-01-19 | ||
| EP0803129B1 (en) * | 1995-01-12 | 1998-12-23 | Siemens Aktiengesellschaft | Mechanical acceleration switch |
| JP3996758B2 (en) * | 2001-03-13 | 2007-10-24 | 富士通コンポーネント株式会社 | Operating condition constrained switch, external magnetic field generation unit, operating condition constrained switch device, and electronic device |
| JP5365655B2 (en) * | 2011-03-16 | 2013-12-11 | 株式会社安川電機 | Reed switch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2892052A (en) * | 1956-02-15 | 1959-06-23 | G M Giannini & Co Inc | Magnetically operated sealed switch apparatus |
| US3327263A (en) * | 1966-03-30 | 1967-06-20 | Allis Chalmers Mfg Co | Liquid means for improving current carrying capacity of reed type switch |
-
1970
- 1970-12-11 JP JP45109398A patent/JPS4911511B1/ja active Pending
-
1971
- 1971-11-27 DE DE19712158875 patent/DE2158875A1/en active Pending
- 1971-12-08 NL NL7116859.A patent/NL158646B/en not_active IP Right Cessation
- 1971-12-08 US US00206013A patent/US3716810A/en not_active Expired - Lifetime
- 1971-12-10 GB GB5760971A patent/GB1373225A/en not_active Expired
- 1971-12-10 FR FR7144372A patent/FR2117621A5/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2204449A (en) * | 1986-08-23 | 1988-11-09 | Stc Plc | Reed relay contacts |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2117621A5 (en) | 1972-07-21 |
| DE2158875A1 (en) | 1972-06-29 |
| NL158646B (en) | 1978-11-15 |
| JPS4911511B1 (en) | 1974-03-18 |
| US3716810A (en) | 1973-02-13 |
| NL7116859A (en) | 1972-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |