Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › G08B 13 - Burglar, theft, or intruder alarms
Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025)
06/1982
06/08/1982US4334214 Warning apparatus using microwaves
06/02/1982EP0053005A1 Intrusion warning system
06/02/1982EP0052891A1 Dissuasive method and arrangement for detecting a lock-breaking attempt
06/01/1982US4333093 Intrusion detection system
06/01/1982US4333074 Security system
05/1982
05/26/1982EP0052193A1 Security arrangement against theft or tampering of electrical apparatus
05/25/1982CA1124383A1 Vibration detector incorporating two or more seismic elements
05/19/1982EP0051766A1 Supporting device for electrical appliances, especially for theft detectors
05/13/1982WO1982001612A1 Alarm system
05/11/1982US4329681 Tamper sensor system
05/11/1982CA1123182A1 Retractable blade knife
05/05/1982EP0050751A1 Optical arrangement for an infrared intrusion detector
05/05/1982EP0050750A1 Infrared intrusion detector
05/04/1982US4328487 Intrusion detector system
05/04/1982US4327819 Object detection system for a shopping cart
04/1982
04/29/1982WO1982001454A1 Video movement detector
04/29/1982WO1982001437A1 Dual frequency anti-theft system
04/28/1982EP0050549A1 Inviolable barrier for the protection against intrusions
04/27/1982US4327360 Alarm device responsive to movement of protected object, power source condition and alarm ground path
04/27/1982US4327359 Glass breakage detectors employing piezoresistive devices
04/27/1982US4327358 Physical deterrent barrier with upward looking detection sensor for intruder detection system
04/27/1982US4327353 Security system
04/27/1982CA1122692A1 Audio-detector alarm
04/21/1982EP0049979A2 Intruder detection security system
04/21/1982EP0049795A2 Electronic switching device operated without contact
04/20/1982US4326272 Electronic intruder detection system
04/20/1982US4326218 Surveillance system
04/20/1982US4326198 Method and apparatus for the promotion of selected harmonic response signals in an article detection system
04/20/1982US4326197 Proximity detector
04/20/1982US4326196 Universal gravity operated intrusion sensing device
04/20/1982CA1121990A1 Monitor actuating device and reusable fastener therefor
04/15/1982WO1982001255A1 Fm/am electronic security system
04/14/1982EP0049493A1 Infrared intrusion detector
04/13/1982US4325089 System for safeguarding magnetically recorded data
04/13/1982US4325079 Secure video transmission system
04/13/1982US4325058 Pre-intrusion detection and alarm system
03/1982
03/30/1982US4322721 Self-monitoring warning installation
03/30/1982US4322714 Vehicle anti-theft alarm
03/30/1982CA1121018A1 Anti-theft purse alarm
03/24/1982EP0015965B1 Device for controlling the closure of folding doors
03/23/1982US4321594 Passive infrared detector
03/23/1982US4321593 Television set with supervisory functions of alarming burglary and safe watching distance
03/23/1982US4321592 Multiple sensor intrusion detection system
03/23/1982US4321586 Article theft detection
03/23/1982US4321463 Low frequency laser fiberoptic detector apparatus for musical instruments and intrusion detection
03/23/1982US4320949 Weatherized housing assembly for camera
03/16/1982CA1120129A1 Circuit device for checking the closed position of a folding door
03/16/1982CA1120126A1 Infrared intrusion alarm system with temperature responsive threshold level
03/09/1982US4319332 Method and apparatus for space monitoring by means of pulsed directional beam
03/09/1982US4319228 Portable intrusion alarm
03/04/1982WO1982000727A1 Supersonic warning system
03/02/1982US4318090 Apparatus for deactivating a surveillance tag
03/02/1982US4318089 Infrared detector system
03/02/1982US4318088 Security fence system
03/02/1982CA1119276A1 Multiple sensor intrusion detection system
02/1982
02/23/1982CA1118865A1 Quasi-stationary noise cancellation system
02/16/1982US4316181 Theft prevention system for business machines
02/16/1982US4316180 Directional detector of changes in a local electrostatic field
02/10/1982EP0045335A1 E field balanced phase intrusion alarm
02/09/1982CA1118069A1 Elongate body of strip or similar form incorporating fibre-optic wave guide means
02/04/1982WO1982000378A1 Modified loop antenna for security systems
02/04/1982WO1982000377A1 A location device
02/02/1982US4314243 Well pump theft alarm
02/02/1982US4314239 Portable electronic alarm device
02/02/1982US4314238 Electric lighting installation
02/02/1982CA1117633A1 Presence sensing system
01/1982
01/27/1982EP0044725A2 Improvements relating to security alarm systems
01/19/1982US4311992 Reusable releasable fastener
01/19/1982US4311889 Alarm device
01/12/1982US4310756 Light grid arrangement using cyclically switched semiconductor light sources
01/12/1982CA1116286A1 Perimeter surveillance system
01/05/1982US4309697 Magnetic surveillance system with odd-even harmonic and phase discrimination
01/05/1982CA1115805A1 Method and apparatus for producing uniform electromagnetic fields in an article detection system
12/1981
12/29/1981US4308530 Detection system forming wide gates with superior spatial selectivity
12/29/1981CA1115372A1 Multi-function combustion detecting device
12/24/1981WO1981003730A1 Motion and intrusion detecting system
12/23/1981EP0041952A1 Danger detection device with detector.
12/22/1981US4307388 Arrangement in order to prevent false alarms of a passive infrared motion alarm
12/22/1981US4307387 Vibration-responsive intruder alarm system
12/22/1981US4307386 Security system and strip or strand incorporating fibre-optic wave guide means therefor
12/22/1981US4306744 Door retainer and alarm device
12/16/1981EP0041794A1 Intrusion detection system and detectors useful therein
12/16/1981EP0041781A2 Intrusion detection and alarm system
12/15/1981US4306228 Security alarm system monitoring difference between sound signal components in two frequency ranges
12/09/1981EP0041132A2 Output stage for sensors supplying an electrical signal
12/08/1981US4305070 Emergency alarm system for static structure utilizing automobile horn
12/08/1981US4305021 Switch for controlling the operation of a light source in response to the presence of a moving person or object and in response to the magnitude of ambient light not provided by the light souce
12/01/1981US4303911 Remote control digitally encoded electronic switch
12/01/1981US4303910 Detection system
12/01/1981US4303909 Electronically alarmed lock
12/01/1981CA1113576A1 Antipilferage system utilizing "figure-8" shaped field producing and detector coils
11/1981
11/24/1981US4302846 Marker tag for a detection system
11/24/1981US4302753 Multi-function combustion detecting device
11/24/1981US4301735 Vibration transmission system for ignition devices
11/24/1981CA1113173A1 Wafer and fastener for use in electronic theft detection system
11/18/1981EP0039799A1 Motion detection device
11/11/1981EP0039424A2 Light curtain adjustment device
11/11/1981EP0039371A2 Surveillance device for the field behind a security fence
11/10/1981US4300236 Radio signalling systems
11/10/1981US4300183 Method and apparatus for generating alternating magnetic fields to produce harmonic signals from a metallic strip
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