Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › G08B 26 - Alarm systems in which substations are interrogated in succession by a central station
Patents for G08B 26 - Alarm systems in which substations are interrogated in succession by a central station (1,136)
11/1991
11/12/1991US5065150 Monitoring apparatus for disaster prevention
11/05/1991US5063371 Aircraft security system
10/1991
10/29/1991US5061922 Method of monitoring changes of state of a power transmission system by interruption signal transmission
10/09/1991EP0450930A2 Data transmission system with double lines
10/09/1991EP0450119A1 Device for connecting additional elements to an existing alarm line
09/1991
09/24/1991US5051722 Central address and programming unit for fire alarm detector
09/19/1991WO1991014242A1 Monitoring and locating system
08/1991
08/29/1991DE4104590A1 Building alarm system - has central unit to which are coupled two signal lines with series-connected sensor discriminators
08/14/1991CN2082882U Control-warning device of multichannel carrier equipment
07/1991
07/24/1991EP0437658A1 Protection device for an electric machine
06/1991
06/12/1991CN2078904U Multi-position successive detecting alarm
05/1991
05/21/1991US5017905 Fire alarm system
04/1991
04/16/1991US5008662 Remote supervisory and controlling machine
04/03/1991EP0419703A1 Method for the freely selective allocation of signalling addresses in a danger-signalling system operating in accordance to the cascade synchronisation principle
03/1991
03/27/1991CN1012228B Fire alarm sensing member
03/13/1991EP0416972A1 Man over board detector installation
03/06/1991EP0415621A2 Communication system for single point emergency lighting
03/01/1991CA2020090A1 Communication system for single point emergency lighting
02/1991
02/26/1991US4996518 Fire alarm system
02/19/1991US4994788 System for collecting alarms from a set of stations
02/19/1991US4994787 Remote intrusion alarm condition advisory system
02/05/1991US4990888 Unitary alarm sensor and communication package for security alarm system
01/1991
01/30/1991EP0267267A4 Hospital signaling and communications system
01/29/1991US4988988 Central monitoring and alarming system
01/29/1991US4988977 Address setting means for fire detectors
01/15/1991CA1279117C Local control system for domestic appliances and alarm devices
01/10/1991DE3920122A1 Interrogation of number of status sensors - using common serial data transmission line for input and output
01/08/1991CA1278841C Data acquisition system
01/02/1991EP0404976A1 Method for data transmission in an alarm signalling device
01/02/1991CN1048275A Search-answering type multichannel electronic centralized monitoring warning system
12/1990
12/11/1990US4977353 Communication system for single point emergency lighting
11/1990
11/27/1990US4973943 Signal control system using two synchronous ring counter circuits
11/27/1990CA1277042C Sequential and/or random polling system with virtually instantaneous response time
11/14/1990EP0396966A1 Portable radiometric data acquisition system
11/08/1990CA2014654A1 Portable radiometric data acquisition system
11/01/1990CA2013611A1 Continuity-isolation testing for class a wiring in fire alarm system
10/1990
10/30/1990US4967195 Hospital signaling and communications system
10/23/1990US4965550 Automatic wake-up circuit arrangement for a single wire multiplex switch monitoring system
10/09/1990US4962368 Reliability and workability test apparatus for an environmental monitoring system
09/1990
09/11/1990US4956634 City tie line connection for fire alarm system
09/04/1990US4954809 Continuity-isolation testing for class A wiring in fire alarm system
08/1990
08/28/1990US4952928 Adaptable electronic monitoring and identification system
08/28/1990US4952926 Selective clearing of latched circuits
08/08/1990EP0381018A2 Fire alarm system and method for operating the same
08/07/1990US4947162 Terminal device for a monitoring and control system
06/1990
06/12/1990US4933668 Aircraft security system
05/1990
05/09/1990EP0367486A2 Fire alarm system
05/08/1990US4924417 Environmental abnormality alarm apparatus
04/1990
04/25/1990EP0365372A1 Address and programme centre of an alarm station with a number of fire detectors
04/24/1990CA1268232A1 Unitary alarm sensor and communication package for security alarm system
04/17/1990US4918425 Monitoring and locating system for an object attached to a transponder monitored by a base station having an associated ID code
04/11/1990EP0362985A1 Improved address setting means for fire detectors
04/11/1990EP0362798A2 Method for the energy-saving operation of risk detectors in a risk detection arrangement
04/11/1990EP0362797A2 Method for the energy-saving operation of risk detectors in a risk detection arrangement
04/10/1990US4916432 Smoke and fire detection system communication
04/04/1990EP0361298A1 Collecting system of alarms from a group of stations
03/1990
03/20/1990US4909329 Fire supervising system and extinguishing target determining system
03/08/1990DE3826895A1 Telecontrol and/or telecommunications system
03/07/1990EP0357309A2 Personnel monitoring system
02/1990
02/13/1990US4901316 Disaster prevention monitoring and control facility
02/06/1990US4899131 Local control system for domestic appliances and alarm devices
01/1990
01/31/1990CN1006664B Multifunctional alarm and control system
01/23/1990US4896209 Passenger vehicle polling system having a central unit for polling passenger seat terminal units
12/1989
12/27/1989EP0347806A1 Danger signal appliance
12/27/1989CN2050198U Automatic alarm device for tall building fire patrol and control
12/05/1989US4885568 Integrated alarm transponder
11/1989
11/29/1989CN1037624A 信号传输的方法 The method of signal transmission
11/02/1989EP0339081A1 Smoke and fire detection system communication
09/1989
09/27/1989EP0333716A1 Aircraft security system
09/14/1989DE3806993A1 Danger detecting system (danger warning system, alarm system)
09/05/1989US4864519 Information transmission system
08/1989
08/29/1989US4862145 Pest monitoring system
07/1989
07/11/1989US4847593 Transmission circuit of fire protection/security system
07/11/1989CA1257356A1 Fire alarm system
06/1989
06/21/1989EP0173735B1 A multiplexed alarm system
06/07/1989EP0319266A2 Fire alarm system
05/1989
05/24/1989EP0317428A1 Remote control and remote surveillance system in time sharing
05/16/1989US4831374 Electric lock system
05/05/1989WO1989004032A1 Smoke and fire detection system communication
05/03/1989EP0314566A1 Electrical contact devices used for lock control
04/1989
04/18/1989US4823118 Fire sensor
03/1989
03/28/1989US4816808 Fire alarm system
01/1989
01/11/1989EP0298133A1 Apparatus for the prevention of disasters
01/03/1989US4796205 Fire alarm system
12/1988
12/20/1988CA1247198A1 Remote sensing systems
12/07/1988EP0293627A1 Radio transmission method
11/1988
11/30/1988CN88103843A Multifunctional alarm and control system
11/29/1988US4788527 Apparatus and method for device control using a two conductor power line
11/15/1988US4785285 Parallel bus alarm system
11/15/1988US4785284 Fire monitoring system
11/15/1988US4785283 Detecting system and detector
11/01/1988US4782330 Data acquisition system
11/01/1988CA1244107A1 Information transmission system
10/1988
10/06/1988DE3709857A1 Method and associated devices for detecting, analysing and forwarding process data in production firms and body signals in hospitals with the aid of telemetry systems
09/1988
09/28/1988CN87100353A Automatic centralized remote monitoring system
09/21/1988EP0283142A1 Pest monitoring system
08/1988
08/31/1988EP0279864A1 Facility for preventing disasters
08/17/1988EP0278717A2 Passenger vehicle polling systems and methods
08/02/1988US4761648 Information transmission system
07/1988
07/28/1988WO1988005582A1 Apparatus for the prevention of disasters
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