GB621011A - Improvements relating to magnetic devices - Google Patents
Improvements relating to magnetic devicesInfo
- Publication number
- GB621011A GB621011A GB388947A GB388947A GB621011A GB 621011 A GB621011 A GB 621011A GB 388947 A GB388947 A GB 388947A GB 388947 A GB388947 A GB 388947A GB 621011 A GB621011 A GB 621011A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- pulse
- current
- coil
- operating
- 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
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1638—Armatures not entering the winding
- H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
- H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
621,011. Electromagnets. ENGLISH ELEC. TRIC CO., Ltd., HASSELL, S., and ROBINSON, A. A. Feb. 10, 1947, No. 3889. [Class 35] [Also in Group XXXVII] An electromagnet, e.g. for relays, comprises a permanent or electromagnet 10 with an annular air gap, in which is situated an operating coil 13, and an armature 14 capable of bridging the air gap when drawn into its attracted position by a pulse of current in the operating coil and of being released when a pulse of reverse polarity is applied to the operating coil. As shown, the disc-shaped armature 14 is held in a stable position against a non-magnetic abutment 17 by a spring 15 which is overcome when a pulse of current in the coil 13 diverts the magnet's flux towards the armature. The armature then moves towards the magnet and takes up a second stable position against the pole faces. A pulse of current in the reverse direction deflects the flux away from the armature and so releases it and allows it to take up its original position. In a modification, Fig. 3 (not shown), a pair of oppositely-disposed alternately-acting electromagnets act on a single armature and in further modifications, Figs. 4 and 5 (not shown), extending flanges are used on either of the circular poles to decrease the operating current. The coil 13 may be carried on the armature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB388947A GB621011A (en) | 1947-02-10 | 1947-02-10 | Improvements relating to magnetic devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB388947A GB621011A (en) | 1947-02-10 | 1947-02-10 | Improvements relating to magnetic devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB621011A true GB621011A (en) | 1949-04-01 |
Family
ID=9766773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB388947A Expired GB621011A (en) | 1947-02-10 | 1947-02-10 | Improvements relating to magnetic devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB621011A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1022712B (en) * | 1952-03-17 | 1958-01-16 | Magnetfabrik Gewerkschaft Wind | Holding magnet system with electrically switchable holding force |
DE1058649B (en) * | 1954-03-13 | 1959-06-04 | Deutsche Edelstahlwerke Ag | Permanent magnetic adhesive device |
DE1096514B (en) * | 1952-03-17 | 1961-01-05 | Magnetfabrik Gewerkschaft Wind | Procedure for changing the inductance of an iron core coil with the help of a permanent magnet |
DE1274256B (en) * | 1958-02-08 | 1968-08-01 | Electro Chimie Metal | Switchable permanent magnet device |
-
1947
- 1947-02-10 GB GB388947A patent/GB621011A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1022712B (en) * | 1952-03-17 | 1958-01-16 | Magnetfabrik Gewerkschaft Wind | Holding magnet system with electrically switchable holding force |
DE1096514B (en) * | 1952-03-17 | 1961-01-05 | Magnetfabrik Gewerkschaft Wind | Procedure for changing the inductance of an iron core coil with the help of a permanent magnet |
DE1058649B (en) * | 1954-03-13 | 1959-06-04 | Deutsche Edelstahlwerke Ag | Permanent magnetic adhesive device |
DE1274256B (en) * | 1958-02-08 | 1968-08-01 | Electro Chimie Metal | Switchable permanent magnet device |
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