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GB621011A - Improvements relating to magnetic devices - Google Patents

Improvements relating to magnetic devices

Info

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
Application number
GB388947A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALFRED ALEC ROBINSON
English Electric Co Ltd
Original Assignee
ALFRED ALEC ROBINSON
English Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ALFRED ALEC ROBINSON, English Electric Co Ltd filed Critical ALFRED ALEC ROBINSON
Priority to GB388947A priority Critical patent/GB621011A/en
Publication of GB621011A publication Critical patent/GB621011A/en
Expired legal-status Critical Current

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.
GB388947A 1947-02-10 1947-02-10 Improvements relating to magnetic devices Expired GB621011A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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