SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS

Child Classifications

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• G08B 1/00 Systems for signalling characterised solely by the form of transmission of the signal
• G08B 13/00 Burglar, theft or intruder alarms
• G08B 15/00 Identifying, scaring or incapacitating burglars, thieves or intruders, e.g. by explosives
• G08B 17/00 Fire alarms; Alarms responsive to explosion
• G08B 19/00 Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
• G08B 21/00 Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
• G08B 23/00 Alarms responsive to unspecified undesired or abnormal conditions
• G08B 25/00 Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
• G08B 26/00 Alarm systems in which substations are interrogated in succession by a central station
• G08B 27/00 Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
• G08B 29/00 Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
• G08B 3/00 Audible signalling systems, e.g. audible personal calling systems
• G08B 31/00 Predictive alarm systems characterised by extrapolation or other computation using updated historic data
• G08B 5/00 Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied
• G08B 6/00 Tactile signalling systems, e.g. tactile personal calling systems
• G08B 7/00 Signalling systems according to two or more of groups G08B3/00 - G08B6/00
• G08B 9/00 Order telegraph apparatus, i.e. means for transmitting one of a finite number of different orders at the discretion of the user, e.g. bridge to engine room orders in ships