GB1391697A - Security system for detecting intrusions in an enclosure - Google Patents

Security system for detecting intrusions in an enclosure

Info

Publication number: GB1391697A
Authority: GB; United Kingdom
Prior art keywords: line; amplifier; april; zener diode; transmission line
Prior art date: 1971-04-07
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

GB1524972A

Other languages

English (en)

Inventor

D M P Lecuyer

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.)

FRANCAIS DETECTION ELETR

La Detection Electronique Francaise

Original Assignee

FRANCAIS DETECTION ELETR

La Detection Electronique Francaise

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.)

1971-04-07

Filing date

1972-04-04

Publication date

1975-04-23

1972-04-04 Application filed by FRANCAIS DETECTION ELETR, La Detection Electronique Francaise filed Critical FRANCAIS DETECTION ELETR

1975-04-23 Publication of GB1391697A publication Critical patent/GB1391697A/en

Status Expired legal-status Critical Current

Links

Classifications

- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/1663—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using seismic sensing means

Landscapes

Physics & Mathematics (AREA)
Life Sciences & Earth Sciences (AREA)
General Physics & Mathematics (AREA)
Remote Sensing (AREA)
Environmental & Geological Engineering (AREA)
Geology (AREA)
Acoustics & Sound (AREA)
General Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Geophysics (AREA)
Burglar Alarm Systems (AREA)
Alarm Systems (AREA)
Emergency Alarm Devices (AREA)
Geophysics And Detection Of Objects (AREA)
Arrangements For Transmission Of Measured Signals (AREA)

GB1524972A 1971-04-07 1972-04-04 Security system for detecting intrusions in an enclosure Expired GB1391697A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7112290A FR2133079A5 (fr)	1971-04-07	1971-04-07

Publications (1)

Publication Number	Publication Date
GB1391697A true GB1391697A (en)	1975-04-23

Family

ID=9074910

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB1524972A Expired GB1391697A (en)	1971-04-07	1972-04-04	Security system for detecting intrusions in an enclosure

Country Status (12)

Country	Link
BE (1)	BE781767A (fr)
CA (1)	CA970869A (fr)
CH (1)	CH556071A (fr)
DE (1)	DE2216319C3 (fr)
ES (1)	ES401536A1 (fr)
FR (1)	FR2133079A5 (fr)
GB (1)	GB1391697A (fr)
IT (1)	IT950969B (fr)
LU (1)	LU65112A1 (fr)
NL (1)	NL7204620A (fr)
OA (1)	OA03991A (fr)
SE (1)	SE373220B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4760295A (en) *	1985-04-17	1988-07-26	Geoquip Security Systems Ltd.	Vibration-sensitive transducer

1971
- 1971-04-07 FR FR7112290A patent/FR2133079A5/fr not_active Expired
1972
- 1972-03-27 CH CH449772A patent/CH556071A/fr not_active IP Right Cessation
- 1972-03-31 IT IT22684/72A patent/IT950969B/it active
- 1972-04-04 GB GB1524972A patent/GB1391697A/en not_active Expired
- 1972-04-05 LU LU65112D patent/LU65112A1/xx unknown
- 1972-04-05 DE DE2216319A patent/DE2216319C3/de not_active Expired
- 1972-04-06 CA CA139,034A patent/CA970869A/en not_active Expired
- 1972-04-06 NL NL7204620A patent/NL7204620A/xx unknown
- 1972-04-06 OA OA54533A patent/OA03991A/fr unknown
- 1972-04-06 BE BE781767A patent/BE781767A/fr not_active IP Right Cessation
- 1972-04-06 SE SE7204424A patent/SE373220B/xx unknown
- 1972-04-07 ES ES401536A patent/ES401536A1/es not_active Expired

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4760295A (en) *	1985-04-17	1988-07-26	Geoquip Security Systems Ltd.	Vibration-sensitive transducer

Also Published As

Publication number	Publication date
OA03991A (fr)	1979-09-15
IT950969B (it)	1973-06-20
DE2216319B2 (de)	1978-10-12
ES401536A1 (es)	1975-02-16
DE2216319C3 (de)	1979-05-31
LU65112A1 (fr)	1972-12-07
NL7204620A (fr)	1972-10-10
CA970869A (en)	1975-07-08
FR2133079A5 (fr)	1972-11-24
CH556071A (fr)	1974-11-15
BE781767A (fr)	1972-10-06
SE373220B (fr)	1975-01-27
DE2216319A1 (de)	1972-10-12

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Legal Events

Date	Code	Title	Description
1975-09-03	PS	Patent sealed
1987-11-25	PCNP	Patent ceased through non-payment of renewal fee