GB661471A - Improvements in electromagnetic relays - Google Patents
Improvements in electromagnetic relaysInfo
- Publication number
- GB661471A GB661471A GB4792/49A GB479249A GB661471A GB 661471 A GB661471 A GB 661471A GB 4792/49 A GB4792/49 A GB 4792/49A GB 479249 A GB479249 A GB 479249A GB 661471 A GB661471 A GB 661471A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- coils
- link
- flux produced
- electromagnetic relays
- 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
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
- H01H50/40—Branched or multiple-limb main magnetic circuits
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
661,471. Electromagnetic relays. BRITISH TABULATING MACHINE CO., Ltd. Feb. 22, 1949. [March 3, 1948] No. 4792/49. Class 38 (v). [Also in Group XXXV] In order to minimise the mutual induction between the coils of a dual coil electromagnetic relay, the core C of the electromagnet is E- shaped with an armature A pivoted at the end of the limb K and with an attracting coil P and holding coil H mounted at opposite ends of the limbs L, M. Owing to the disposition of the coils P, H, the flux produced by the coil P does not link with that of coil H and, conversely, the flux produced by the latter does not link up with that of the former. In a, modification, a non-magnetic piece B, Fig. 5 (not shown) is inserted in the central limb L so as to reduce further the effect of the coil P on the coil H.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12851A US2540022A (en) | 1948-03-03 | 1948-03-03 | Dual coil electric relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB661471A true GB661471A (en) | 1951-11-21 |
Family
ID=21757031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4792/49A Expired GB661471A (en) | 1948-03-03 | 1949-02-22 | Improvements in electromagnetic relays |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2540022A (en) |
| DE (1) | DE874516C (en) |
| GB (1) | GB661471A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2887626A (en) * | 1957-06-10 | 1959-05-19 | Allis Chalmers Mfg Co | Reverse current relay |
| US2998551A (en) * | 1958-07-24 | 1961-08-29 | Automatic Switch Co | Frequency-responsive relay system |
| US3104302A (en) * | 1960-05-16 | 1963-09-17 | William J Williams | Two point switch mechanism |
| BE642223A (en) * | 1963-02-19 | |||
| US3256403A (en) * | 1964-01-02 | 1966-06-14 | Gen Electric | Switch relay for use in dynamoelectric machines |
| US4609965A (en) * | 1984-11-09 | 1986-09-02 | Pt Components, Inc. | Magnetic clutch |
| US4734817A (en) * | 1984-11-09 | 1988-03-29 | Pt Components, Inc. | Magnetic clutch |
| US8508321B2 (en) * | 2010-08-17 | 2013-08-13 | Song Chuan Precision Co., Ltd. | Relay with multiple coils |
| US8451080B2 (en) * | 2011-02-16 | 2013-05-28 | Toyota Motor Engineering & Manufacturing North America, Inc. | Magnetic field focusing for actuator applications |
| US8736128B2 (en) | 2011-08-10 | 2014-05-27 | Toyota Motor Engineering & Manufacturing North America, Inc. | Three dimensional magnetic field manipulation in electromagnetic devices |
| US8570128B1 (en) | 2012-06-08 | 2013-10-29 | Toyota Motor Engineering & Manufacturing North America, Inc. | Magnetic field manipulation devices and actuators incorporating the same |
| US9231309B2 (en) | 2012-07-27 | 2016-01-05 | Toyota Motor Engineering & Manufacturing North America, Inc. | Metamaterial magnetic field guide |
| US20170149379A1 (en) * | 2015-11-20 | 2017-05-25 | Enphase Energy, Inc. | Interconnect device for use in islanding a microgrid |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1767058A (en) * | 1930-06-24 | Poration | ||
| US1088878A (en) * | 1907-03-25 | 1914-03-03 | Stromberg Carlson Telephone | Electromagnetic device. |
| USRE14834E (en) * | 1917-12-08 | 1920-04-06 | chicago | |
| US1753180A (en) * | 1926-12-08 | 1930-04-01 | Monitor Controller Co | Switch-actuating mechanism |
| FR44820E (en) * | 1933-12-28 | 1935-04-15 | Alsthom Cgee | Further development of electromagnets, especially those used as contactors |
| US2390800A (en) * | 1942-05-13 | 1945-12-11 | Westinghouse Electric Corp | Transformer |
-
1948
- 1948-03-03 US US12851A patent/US2540022A/en not_active Expired - Lifetime
-
1949
- 1949-02-22 GB GB4792/49A patent/GB661471A/en not_active Expired
-
1950
- 1950-09-28 DE DEI2205A patent/DE874516C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE874516C (en) | 1953-04-23 |
| US2540022A (en) | 1951-01-30 |
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