GB2122031B - Electromagnetic release device - Google Patents

Electromagnetic release device

Info

Publication number
GB2122031B
GB2122031B GB08312046A GB8312046A GB2122031B GB 2122031 B GB2122031 B GB 2122031B GB 08312046 A GB08312046 A GB 08312046A GB 8312046 A GB8312046 A GB 8312046A GB 2122031 B GB2122031 B GB 2122031B
Authority
GB
United Kingdom
Prior art keywords
release device
electromagnetic release
electromagnetic
release
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
GB08312046A
Other versions
GB8312046D0 (en
GB2122031A (en
Inventor
George Francis Chrisp
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.)
Rolls Royce Power Engineering PLC
Original Assignee
Northern Engineering Industries 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 Northern Engineering Industries PLC filed Critical Northern Engineering Industries PLC
Priority to GB08312046A priority Critical patent/GB2122031B/en
Publication of GB8312046D0 publication Critical patent/GB8312046D0/en
Publication of GB2122031A publication Critical patent/GB2122031A/en
Application granted granted Critical
Publication of GB2122031B publication Critical patent/GB2122031B/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
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/322—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with plunger type armature

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
GB08312046A 1982-06-03 1983-05-03 Electromagnetic release device Expired GB2122031B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08312046A GB2122031B (en) 1982-06-03 1983-05-03 Electromagnetic release device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8216206 1982-06-03
GB08312046A GB2122031B (en) 1982-06-03 1983-05-03 Electromagnetic release device

Publications (3)

Publication Number Publication Date
GB8312046D0 GB8312046D0 (en) 1983-06-08
GB2122031A GB2122031A (en) 1984-01-04
GB2122031B true GB2122031B (en) 1985-10-30

Family

ID=26283025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08312046A Expired GB2122031B (en) 1982-06-03 1983-05-03 Electromagnetic release device

Country Status (1)

Country Link
GB (1) GB2122031B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1294305C (en) * 1987-08-25 1992-01-14 Donald R. Boyd Tripping coil with flux shifting coil and booster coil
US4876521A (en) * 1987-08-25 1989-10-24 Siemens Energy & Automation, Inc. Tripping coil with flux shifting coil and booster coil
DE29915698U1 (en) 1999-09-07 2000-05-11 Abb Patent Gmbh, 68309 Mannheim Electromagnetic release
GB2357374B (en) * 1999-12-15 2002-04-10 Inertia Switch Ltd Battery cut-off device and method
GB2473846A (en) * 2009-09-25 2011-03-30 Eaton Electric Bv Trip unit actuator

Also Published As

Publication number Publication date
GB8312046D0 (en) 1983-06-08
GB2122031A (en) 1984-01-04

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20030502