GB2450890B - Magnetic contact - Google Patents

Magnetic contact

Info

Publication number
GB2450890B
GB2450890B GB0713372.1A GB0713372A GB2450890B GB 2450890 B GB2450890 B GB 2450890B GB 0713372 A GB0713372 A GB 0713372A GB 2450890 B GB2450890 B GB 2450890B
Authority
GB
United Kingdom
Prior art keywords
magnetic contact
magnetic
contact
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 - Fee Related
Application number
GB0713372.1A
Other versions
GB0713372D0 (en
GB2450890A (en
Inventor
John Darby
Kim Lloyd
Graham Franklin
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.)
ELMDENE INTERNAT Ltd
Original Assignee
ELMDENE INTERNAT 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 ELMDENE INTERNAT Ltd filed Critical ELMDENE INTERNAT Ltd
Priority to GB0713372.1A priority Critical patent/GB2450890B/en
Publication of GB0713372D0 publication Critical patent/GB0713372D0/en
Publication of GB2450890A publication Critical patent/GB2450890A/en
Application granted granted Critical
Publication of GB2450890B publication Critical patent/GB2450890B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/0013—Permanent magnet actuating reed switches characterised by the co-operation between reed switch and permanent magnet; Magnetic circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/0046—Limit switches, also fail-safe operation or anti-tamper considerations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/008—Change of magnetic field wherein the magnet and switch are fixed, e.g. by shielding or relative movements of armature
GB0713372.1A 2007-07-10 2007-07-10 Magnetic contact Expired - Fee Related GB2450890B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0713372.1A GB2450890B (en) 2007-07-10 2007-07-10 Magnetic contact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0713372.1A GB2450890B (en) 2007-07-10 2007-07-10 Magnetic contact

Publications (3)

Publication Number Publication Date
GB0713372D0 GB0713372D0 (en) 2007-08-22
GB2450890A GB2450890A (en) 2009-01-14
GB2450890B true GB2450890B (en) 2011-12-14

Family

ID=38461334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0713372.1A Expired - Fee Related GB2450890B (en) 2007-07-10 2007-07-10 Magnetic contact

Country Status (1)

Country Link
GB (1) GB2450890B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2453591B (en) * 2007-10-12 2012-08-29 Elmdene Internat Ltd Magnetic contact
DE102010012557A1 (en) * 2010-03-23 2011-09-29 Link Gmbh Sensor unit and window and building monitoring system with such sensor units
CN103887110B (en) * 2014-03-28 2016-01-20 国家深海基地管理中心 deep-sea motor magnetic starting switch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1427565A (en) * 1972-03-08 1976-03-10 American District Telegraph Co Burglar alarms
AU3566984A (en) * 1980-09-25 1985-05-23 Mahan, P.B. Multiple contact reed switch
EP0283376A1 (en) * 1987-03-05 1988-09-21 FICHET-BAUCHE SociétÀ© dite: Magnetically controlled detector of the movement of a mobile part with respect to a fixed part for the opening of an enclosure
DE20014841U1 (en) * 2000-08-26 2002-01-17 Elektro Special Bedarf Link Gm Magnet-operated detector with two reed contacts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1427565A (en) * 1972-03-08 1976-03-10 American District Telegraph Co Burglar alarms
AU3566984A (en) * 1980-09-25 1985-05-23 Mahan, P.B. Multiple contact reed switch
EP0283376A1 (en) * 1987-03-05 1988-09-21 FICHET-BAUCHE SociétÀ© dite: Magnetically controlled detector of the movement of a mobile part with respect to a fixed part for the opening of an enclosure
DE20014841U1 (en) * 2000-08-26 2002-01-17 Elektro Special Bedarf Link Gm Magnet-operated detector with two reed contacts

Also Published As

Publication number Publication date
GB0713372D0 (en) 2007-08-22
GB2450890A (en) 2009-01-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20130710