GB564935A - Improvements in or relating to electrical overload and like cut-out arrangements - Google Patents

Improvements in or relating to electrical overload and like cut-out arrangements

Info

Publication number
GB564935A
GB564935A GB610943A GB610943A GB564935A GB 564935 A GB564935 A GB 564935A GB 610943 A GB610943 A GB 610943A GB 610943 A GB610943 A GB 610943A GB 564935 A GB564935 A GB 564935A
Authority
GB
United Kingdom
Prior art keywords
pole
armature
relating
cut
permanent
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
GB610943A
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.)
WILLIAM HENRY DRURY YULE
STC PLC
Original Assignee
WILLIAM HENRY DRURY YULE
Standard Telephone and Cables PLC
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 WILLIAM HENRY DRURY YULE, Standard Telephone and Cables PLC filed Critical WILLIAM HENRY DRURY YULE
Priority to GB610943A priority Critical patent/GB564935A/en
Publication of GB564935A publication Critical patent/GB564935A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part

Landscapes

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

Abstract

564,935. Electromagnetic relays. STANDARD TELEPHONES & CABLES, Ltd., and YULE, W. H. D. April 16, 1943, No. 6109. [Class 38 (v)] A sensitive high-speed relay has its armature normally held lightly against one part A of the bifurcated pole A, B of a permanent magnet; overload current of suitable direction in a coil mounted on A neutralizes the permanent magnetism in A so that the armature is attracted to B and after a short movement will reach a position in which the permanent magnetic forces are sufficient to carry it right over into its final position. The pole A may be made smaller than the pole B or A and B may be made of different magnetic materials, or the air gap at A may be made larger than at B, or the armature may be mechanically biassed. Specification 496,697 is referred to.
GB610943A 1943-04-16 1943-04-16 Improvements in or relating to electrical overload and like cut-out arrangements Expired GB564935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB610943A GB564935A (en) 1943-04-16 1943-04-16 Improvements in or relating to electrical overload and like cut-out arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB610943A GB564935A (en) 1943-04-16 1943-04-16 Improvements in or relating to electrical overload and like cut-out arrangements

Publications (1)

Publication Number Publication Date
GB564935A true GB564935A (en) 1944-10-19

Family

ID=9808547

Family Applications (1)

Application Number Title Priority Date Filing Date
GB610943A Expired GB564935A (en) 1943-04-16 1943-04-16 Improvements in or relating to electrical overload and like cut-out arrangements

Country Status (1)

Country Link
GB (1) GB564935A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2587441A (en) * 1947-07-18 1952-02-26 Saia Ag Fur Schaltapp Device for controlling consumer circuits by means of at least one measuring instrument carrying small currents

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2587441A (en) * 1947-07-18 1952-02-26 Saia Ag Fur Schaltapp Device for controlling consumer circuits by means of at least one measuring instrument carrying small currents

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