GB8312046D0 - Electromagnetic actuators - Google Patents

Electromagnetic actuators

Info

Publication number: GB8312046D0
Authority: GB; United Kingdom
Prior art keywords: electromagnetic actuators; actuators; electromagnetic
Prior art date: 1982-06-03
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.): Granted

Application number

GB838312046A

Other versions

GB2122031B (en

GB2122031A (en

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.)

1982-06-03

Filing date

1983-05-03

Publication date

1983-06-08

1983-05-03 Application filed by Northern Engineering Industries PLC filed Critical Northern Engineering Industries PLC

1983-05-03 Priority to GB08312046A priority Critical patent/GB2122031B/en

1983-06-08 Publication of GB8312046D0 publication Critical patent/GB8312046D0/en

1984-01-04 Publication of GB2122031A publication Critical patent/GB2122031A/en

1985-10-30 Application granted granted Critical

1985-10-30 Publication of GB2122031B publication Critical patent/GB2122031B/en

Status Expired legal-status Critical Current

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 true GB8312046D0 (en)	1983-06-08
GB2122031A GB2122031A (en)	1984-01-04
GB2122031B 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

1983
- 1983-05-03 GB GB08312046A patent/GB2122031B/en not_active Expired

Also Published As

Publication number	Publication date
GB2122031B (en)	1985-10-30
GB2122031A (en)	1984-01-04

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Legal Events

Date	Code	Title	Description
1987-01-28	746	Register noted 'licences of right' (sect. 46/1977)
2000-02-02	732E	Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
2003-05-28	PE20	Patent expired after termination of 20 years	Effective date: 20030502