GB1320153A - Alarm systems - Google Patents

Alarm systems

Info

Publication number
GB1320153A
GB1320153A GB3055870A GB3055870A GB1320153A GB 1320153 A GB1320153 A GB 1320153A GB 3055870 A GB3055870 A GB 3055870A GB 3055870 A GB3055870 A GB 3055870A GB 1320153 A GB1320153 A GB 1320153A
Authority
GB
United Kingdom
Prior art keywords
door
person
locked
corridor
doors
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
GB3055870A
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.)
Individual
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 GB1320153A publication Critical patent/GB1320153A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G01V3/10—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 using induction coils
    • G01V3/104—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 using induction coils using several coupled or uncoupled coils
    • G01V3/105—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 using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops

Abstract

1320153 Detaining thieves Y BROWN 24 June 1970 [26 June 1969 (2) 11 July 1969 6 Aug 1969 22 Dec 1969 12 Jan 1970] 30558/70 Heading E2X [Also in Divisions Gl G3 and G4] Revolving doors at the entrance of a bank or in airport transit corridors are provided with a metal detector, see Division Gl, for detecting the presence of guns on a person. The door is made of four clockwise rotating panels 10 of bullet proof plastics material, side wall 11A being lengthened and wall 11B shortened so that when the door is locked a person leaving can escape whereas the person entering cannot escape. The coils of the detector pass behind wall 11A, across the top half of the entrance, through spindle 12 and underneath the floor and provide a signal to sound an alarm and lock the door when a gun is detected on a person entering. One or more loundspeakers 15 may be provided to relay a message to the person trapped and shute 14 provided to allow the person trapped to pass out the alarm initiating metal object. The detector coils may be positioned on a wall adjacent swing doors, Fig. 3 (not shown), sliding doors or across a corridor. Fig. 4 shows an airport transit corridor in which people pass from space 30 through corridor 31 and revolving door 34 to passage 31, revolving doors 35 being locked. If a person carrying a gun is detected by the coils arranged across area D the door 34 is locked and door 35 permitted to open so that the person leaves through passageway 36. When the person leaves door 35 is again locked and door 34 opened so that people may continue to board the aircraft with the minimum of delay.
GB3055870A 1969-06-26 1970-06-24 Alarm systems Expired GB1320153A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AU5707869 1969-06-26
AU5707769 1969-06-26
AU5780069 1969-07-11
AU5912369 1969-08-06
AU6556369 1969-12-22
AUPA005870 1970-01-12

Publications (1)

Publication Number Publication Date
GB1320153A true GB1320153A (en) 1973-06-13

Family

ID=27542766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3055870A Expired GB1320153A (en) 1969-06-26 1970-06-24 Alarm systems

Country Status (5)

Country Link
DE (1) DE2031523C3 (en)
FR (1) FR2054591A1 (en)
GB (1) GB1320153A (en)
IL (1) IL34799A (en)
SE (1) SE361949B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220444A (en) * 1988-07-06 1990-01-10 Paul Francis Creer Revolving security door
EP1264289A1 (en) * 2000-10-04 2002-12-11 ADT Security Services Inc. Ingress/egress control system for airport concourses and other access controlled areas

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2314509A1 (en) * 1975-06-11 1977-01-07 Dumesnil Gerard Baggage checker for weapon detection - uses remanent magnetism to detect ferromagnetic object concealed in nonmagnetic material
SE450673B (en) * 1980-01-15 1987-07-13 Matsushita Electric Works Ltd Alert system, to indicate a person's presence in a given area
FR2510764A1 (en) * 1981-07-30 1983-02-04 Franquet Leon Firearms detector for protected zones - uses pair of coils supplied by AC source and alternately acting has EM field emitters and receivers to obtain uniform sensitivity

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220444A (en) * 1988-07-06 1990-01-10 Paul Francis Creer Revolving security door
EP1264289A1 (en) * 2000-10-04 2002-12-11 ADT Security Services Inc. Ingress/egress control system for airport concourses and other access controlled areas
EP1264289A4 (en) * 2000-10-04 2006-03-29 Adt Security Services Inc Ingress/egress control system for airport concourses and other access controlled areas

Also Published As

Publication number Publication date
FR2054591A1 (en) 1971-04-23
DE2031523A1 (en) 1971-02-25
DE2031523B2 (en) 1975-04-30
DE2031523C3 (en) 1976-01-08
IL34799A (en) 1973-01-30
SE361949B (en) 1973-11-19

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Legal Events

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