GB790099A - Improvements in or relating to electromagnetic switches - Google Patents
Improvements in or relating to electromagnetic switchesInfo
- Publication number
- GB790099A GB790099A GB14008/56A GB1400856A GB790099A GB 790099 A GB790099 A GB 790099A GB 14008/56 A GB14008/56 A GB 14008/56A GB 1400856 A GB1400856 A GB 1400856A GB 790099 A GB790099 A GB 790099A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- magnet
- arc
- attenuated
- raised
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
Abstract
790,099. Electromagnetic switches; arc rupturing in switches. SQUARE D CO. May 7, 1956 [May 26, 1955], No. 14008/56. Class 38 (5). Energization of a coil 7 lifts a T-shaped armature 9 towards a core 5 so that a beam 4 pivotally connected to the armature at 6 slides along a support 2 and an insulating contactoperating beam 8 connected to the beam 4 is raised. The beam 8 carries at its centre a permanent blow-out magnet 24 and at its extremities spring-biased bridging contacts 25, 27, and when the beam is raised the magnet 24 abuts a normally closed spring-biased bridging contact 26 to separate it from fixed contacts 30, 32, the interrupting arc being attenuated by the magnet ; also, the contacts 25, 27 engage, respectively, pairs of fixed contacts 12, 13. On deenergization of the coil 7 the arcs formed by the opening of contacts 25, 27 are attenuated by the magnet 24 although with lesser effect than that exercised upon the contact 26. The three sets of contacts have arc chambers such as 38 formed in an insulating block 10 whereby each set is isolated from the others.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US511183A US2836685A (en) | 1955-05-26 | 1955-05-26 | Magnetic blowout switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB790099A true GB790099A (en) | 1958-02-05 |
Family
ID=24033794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14008/56A Expired GB790099A (en) | 1955-05-26 | 1956-05-07 | Improvements in or relating to electromagnetic switches |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2836685A (en) |
| GB (1) | GB790099A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE568997A (en) * | 1957-07-03 | |||
| US3235686A (en) * | 1961-06-29 | 1966-02-15 | Square D Co | Magnetic switch with readily removable electromagnetic contact unit |
| JPS5713628A (en) * | 1980-06-27 | 1982-01-23 | Mitsubishi Electric Corp | Direct current electromagnetic contactor |
| US4835502A (en) * | 1988-09-13 | 1989-05-30 | Potter & Brumfield, Inc. | Secure magnet blowout mounting for relays |
| US5834723A (en) * | 1997-06-02 | 1998-11-10 | Allen Bradley Company, Llc | Apparatus for retaining a movable contact in a circuit interrupter |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1348842A (en) * | 1918-03-18 | 1920-08-10 | William N Barlow | Electric relay or circuit-closing device |
| US2239031A (en) * | 1936-08-24 | 1941-04-22 | Square D Co | Electric switch |
| US2200108A (en) * | 1938-08-10 | 1940-05-07 | Heinemann Circuit Breaker Comp | Blow-out mechanism |
| US2304972A (en) * | 1939-11-24 | 1942-12-15 | Square D Co | Electric switch |
| US2332446A (en) * | 1941-01-13 | 1943-10-19 | Allen Bradley Co | Permanent magnet blowout for electric switches |
| US2340682A (en) * | 1942-05-06 | 1944-02-01 | Gen Electric | Electric contact element |
| US2518480A (en) * | 1946-06-01 | 1950-08-15 | Barber Colman Co | Snap switch |
| US2575060A (en) * | 1947-08-07 | 1951-11-13 | Allen Bradley Co | Arc interrupter for electric switches |
| US2611059A (en) * | 1950-07-07 | 1952-09-16 | Westinghouse Electric Corp | Electric switch with permanentmagnet blowout field |
| US2692318A (en) * | 1951-03-31 | 1954-10-19 | Clark Controller Co | Arc chamber for circuit breakers |
-
1955
- 1955-05-26 US US511183A patent/US2836685A/en not_active Expired - Lifetime
-
1956
- 1956-05-07 GB GB14008/56A patent/GB790099A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2836685A (en) | 1958-05-27 |
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