CA2067730A1 - Vehicle security system - Google Patents

Vehicle security system

Info

Publication number
CA2067730A1
CA2067730A1 CA002067730A CA2067730A CA2067730A1 CA 2067730 A1 CA2067730 A1 CA 2067730A1 CA 002067730 A CA002067730 A CA 002067730A CA 2067730 A CA2067730 A CA 2067730A CA 2067730 A1 CA2067730 A1 CA 2067730A1
Authority
CA
Canada
Prior art keywords
vehicle
alarm
differential amplifier
remote
gap
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.)
Abandoned
Application number
CA002067730A
Other languages
English (en)
French (fr)
Inventor
Trevor S. Garlick
Ernest J. Wilcox
Alexander W. Duncan
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.)
Leonardo UK Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2067730A1 publication Critical patent/CA2067730A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Burglar Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)
CA002067730A 1990-08-31 1991-08-28 Vehicle security system Abandoned CA2067730A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909019013A GB9019013D0 (en) 1990-08-31 1990-08-31 A moving magnetic field detector
GB9019013.3 1990-08-31

Publications (1)

Publication Number Publication Date
CA2067730A1 true CA2067730A1 (en) 1992-03-01

Family

ID=10681437

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002067730A Abandoned CA2067730A1 (en) 1990-08-31 1991-08-28 Vehicle security system

Country Status (12)

Country Link
EP (1) EP0498865A1 (pt)
JP (1) JPH05502106A (pt)
CN (1) CN1061189A (pt)
BR (1) BR9105887A (pt)
CA (1) CA2067730A1 (pt)
GB (2) GB9019013D0 (pt)
IE (1) IE913062A1 (pt)
IL (1) IL99235A0 (pt)
MX (1) MX9100880A (pt)
PT (1) PT98819A (pt)
WO (1) WO1992004645A1 (pt)
ZA (1) ZA916596B (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2320348A (en) * 1996-12-10 1998-06-17 Robert Iain Doig Vehicle booby trap detector
ES2196954B1 (es) * 2001-05-18 2005-11-01 Pedro Garcia Perez Detector de manipulaciones en automoviles.
ES2222784A1 (es) * 2002-10-17 2005-02-01 Proyectos Y Tecnologia Sallen, S.L. Sistema para la deteccion de cargas.
GB0317827D0 (en) * 2003-07-30 2003-09-03 Pw Allen & Company Ltd Inspection/detection device particularly for use under a vehicle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519094A (en) * 1945-10-30 1950-08-15 Lundberg Explorations Ltd Apparatus for detecting magnetic disturbances
US3919704A (en) * 1972-12-04 1975-11-11 Check Mate Systems Inc System and method for detecting unauthorized removal of goods from protected premises, and magnet detecting apparatus suitable for use therein
US4603295A (en) * 1982-07-15 1986-07-29 The United States Of America As Represented By The Secretary Of The Navy Two-headed DC magnetic target proximity sensor
US4639674A (en) * 1983-04-11 1987-01-27 Schonstedt Instrument Company Apparatus and method employing extraneous field compensation for locating current-carrying objects
GB2226636B (en) * 1988-12-05 1993-01-27 Plessey Co Plc Apparatus for sensing the movement of a local magnetic object.
DE3916500A1 (de) * 1989-05-20 1990-11-22 Eberhard Zech Verfahren zur ermittlung des bewegungsablaufes eines gegenstandes, insbesondere eines gegenstandes in einem raum

Also Published As

Publication number Publication date
JPH05502106A (ja) 1993-04-15
CN1061189A (zh) 1992-05-20
ZA916596B (en) 1992-08-26
EP0498865A1 (en) 1992-08-19
WO1992004645A1 (en) 1992-03-19
GB9019013D0 (en) 1990-10-17
IE913062A1 (en) 1992-03-11
PT98819A (pt) 1993-09-30
GB2249836A (en) 1992-05-20
IL99235A0 (en) 1992-07-15
MX9100880A (es) 1992-04-01
GB9118446D0 (en) 1991-10-16
BR9105887A (pt) 1992-10-13

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Legal Events

Date Code Title Description
FZDE Discontinued