GB584347A - Improvements in or relating to polarized electro-magnetic instruments - Google Patents

Improvements in or relating to polarized electro-magnetic instruments

Info

Publication number
GB584347A
GB584347A GB22903/44A GB2290344A GB584347A GB 584347 A GB584347 A GB 584347A GB 22903/44 A GB22903/44 A GB 22903/44A GB 2290344 A GB2290344 A GB 2290344A GB 584347 A GB584347 A GB 584347A
Authority
GB
United Kingdom
Prior art keywords
armature
permanent magnet
spring assemblies
air gaps
electromagnetic
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
GB22903/44A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB584347A publication Critical patent/GB584347A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Abstract

584,347. Electromagnetic relays. TELEFONAKTIEBOLAGET L. M. ERICSSON. Nov. 17, 1944, No. 22903. Convention date, Nov. 18, 1943. [Class 38 (v)] In a polarized electromagnetic relay comprising an electromagnet M and a permanent magnet P with a common yoke 0, the electromagnetic flux branches to two air gaps, over which the permanent magnet flux passes. Situated in the air gaps are two armatures A<1> and A' interconnected by non-magnetic material and pivoted about an axis V. The electromagnetic flux aids the permanent magnet flux at one air gap and opposes it at the other causing movement of the armature, which is transferred to spring assemblies by means of. needles mounted in holes H' and H<2>, which also serve to keep the armature in a neutral position. Shifting the permanent magnet so that the air gaps are unequal, causes the armature to act upon one of the spring assemblies when the electromagnet is de-energized, and alternate to the other on energizing. Fig. 5 shows an alternative layout, the spring assemblies in this case being replaced by rigid contact needles F<1> and F' and contact springs in the armature A'.
GB22903/44A 1943-11-18 1944-11-17 Improvements in or relating to polarized electro-magnetic instruments Expired GB584347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE249244X 1943-11-18

Publications (1)

Publication Number Publication Date
GB584347A true GB584347A (en) 1947-01-13

Family

ID=20306124

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22903/44A Expired GB584347A (en) 1943-11-18 1944-11-17 Improvements in or relating to polarized electro-magnetic instruments

Country Status (4)

Country Link
BE (1) BE459127A (en)
CH (1) CH249244A (en)
FR (1) FR909358A (en)
GB (1) GB584347A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850595A (en) * 1954-02-18 1958-09-02 Gen Telephone Lab Inc Polarized relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850595A (en) * 1954-02-18 1958-09-02 Gen Telephone Lab Inc Polarized relay

Also Published As

Publication number Publication date
FR909358A (en) 1946-05-07
BE459127A (en)
CH249244A (en) 1947-06-15

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