GB2347022A - Magnetic field generation - Google Patents

Magnetic field generation

Info

Publication number
GB2347022A
GB2347022A GB0012971A GB0012971A GB2347022A GB 2347022 A GB2347022 A GB 2347022A GB 0012971 A GB0012971 A GB 0012971A GB 0012971 A GB0012971 A GB 0012971A GB 2347022 A GB2347022 A GB 2347022A
Authority
GB
United Kingdom
Prior art keywords
magnetic field
field generation
windings
coil
generating
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.)
Pending
Application number
GB0012971A
Other versions
GB0012971D0 (en
Inventor
Mark England
Andrew Nicholas Dames
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.)
Flying Null Ltd
Original Assignee
Flying Null 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 Flying Null Ltd filed Critical Flying Null Ltd
Publication of GB0012971D0 publication Critical patent/GB0012971D0/en
Publication of GB2347022A publication Critical patent/GB2347022A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/11—Structural association with clutches, brakes, gears, pulleys or mechanical starters with dynamo-electric clutches
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting

Abstract

A device for generating a magnetic field is disclosed, the device being characterised in that it comprises a permanent magnet, e.g. a bar magnet, mounted for rotation and disposed within the windings of a coil.
GB0012971A 1997-10-30 1998-10-30 Magnetic field generation Pending GB2347022A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9722938.9A GB9722938D0 (en) 1997-10-30 1997-10-30 Generating magnetic fields
PCT/GB1998/003246 WO1999023741A1 (en) 1997-10-30 1998-10-30 Magnetic field generation

Publications (2)

Publication Number Publication Date
GB0012971D0 GB0012971D0 (en) 2000-07-19
GB2347022A true GB2347022A (en) 2000-08-23

Family

ID=10821322

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9722938.9A Ceased GB9722938D0 (en) 1997-10-30 1997-10-30 Generating magnetic fields
GB0012971A Pending GB2347022A (en) 1997-10-30 1998-10-30 Magnetic field generation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9722938.9A Ceased GB9722938D0 (en) 1997-10-30 1997-10-30 Generating magnetic fields

Country Status (3)

Country Link
AU (1) AU9638298A (en)
GB (2) GB9722938D0 (en)
WO (1) WO1999023741A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6075441A (en) 1996-09-05 2000-06-13 Key-Trak, Inc. Inventoriable-object control and tracking system
AU6031499A (en) 1998-09-11 2000-04-03 Key-Trak, Inc. Object control and tracking system with zonal transition detection
AU6032699A (en) 1998-09-11 2000-04-03 Key-Trak, Inc. Mobile object tracking system
US6195005B1 (en) 1998-09-11 2001-02-27 Key-Trak, Inc. Object carriers for an object control and tracking system
WO2000016280A1 (en) 1998-09-11 2000-03-23 Key-Trak, Inc. Object tracking system with non-contact object detection and identification

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135775A (en) * 1983-02-25 1984-09-05 Smiths Industries Plc Gyroscope apparatus
US4527153A (en) * 1981-08-18 1985-07-02 Kazunari Yamada Detectable element and sensor
US4748606A (en) * 1985-04-29 1988-05-31 Sony Corporation External magnetic field inverting apparatus for magneto-optical disc apparatus
GB2226453A (en) * 1988-12-23 1990-06-27 Georg Spinner An electromagnetic switch drive
JPH03205638A (en) * 1990-01-08 1991-09-09 Matsushita Electric Ind Co Ltd Magnetic field inverting device
EP0474101A1 (en) * 1990-09-05 1992-03-11 Micromag S.A. Electric current generating device
WO1996026312A1 (en) * 1995-02-20 1996-08-29 Unilever N.V. Liquid dispensing system
WO1998026312A1 (en) * 1996-12-09 1998-06-18 Flying Null Limited Magnetic tags

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9402943L (en) * 1994-09-02 1996-03-03 Rso Corp Label for marking and remote indication of objects

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4527153A (en) * 1981-08-18 1985-07-02 Kazunari Yamada Detectable element and sensor
GB2135775A (en) * 1983-02-25 1984-09-05 Smiths Industries Plc Gyroscope apparatus
US4748606A (en) * 1985-04-29 1988-05-31 Sony Corporation External magnetic field inverting apparatus for magneto-optical disc apparatus
GB2226453A (en) * 1988-12-23 1990-06-27 Georg Spinner An electromagnetic switch drive
JPH03205638A (en) * 1990-01-08 1991-09-09 Matsushita Electric Ind Co Ltd Magnetic field inverting device
EP0474101A1 (en) * 1990-09-05 1992-03-11 Micromag S.A. Electric current generating device
WO1996026312A1 (en) * 1995-02-20 1996-08-29 Unilever N.V. Liquid dispensing system
WO1998026312A1 (en) * 1996-12-09 1998-06-18 Flying Null Limited Magnetic tags

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PAJ vol015 no480(P-1284 & JP 03 205 638 A *

Also Published As

Publication number Publication date
WO1999023741A1 (en) 1999-05-14
AU9638298A (en) 1999-05-24
GB9722938D0 (en) 1998-01-07
GB0012971D0 (en) 2000-07-19

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