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IPC 7
  G08 - G08B 17/12  
G08B01900-G08B03100
 

SECTION G – PHYSICS


G 08SIGNALLING (indicating or display devices per se G09F; transmission of pictures H04N)


G 08 BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS (signalling arrangements on vehicles B60Q, B62D 41/00; railway signalling systems or devices B61L; on cycles B62J 3/00, B62J 6/00; safes or strong-rooms with alarm devices E05G; signalling or alarm devices in mines E21F 17/18; sensitive measuring elements, see the appropriate subclasses of G01; traffic control systems G08G; visual indicating means G09; sound-producing devices G10; radio or near-field calling systems H04B 5/00, H04B 7/00; selecting arrangements H04Q 7/00, H04Q 9/00; loudspeakers, microphones, gramohpone pick-ups or like acoustic electromechanical transducers H04R)


19/

00Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow

19/

02.Alarm responsive to formation or anticipated formation of ice (indicating weather conditions G01W 1/00)


21/

00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for

21/

02.Alarms for ensuring the safety of persons [7]

 

21/

04..responsive to non-activity, e.g. of elderly persons (G08B 21/06 takes precedence) [7]

 

21/

06..indicating a condition of sleep, e.g. anti-dozing alarms (safety devices for propulsion-unit control of vehicles responsive to incapacity of driver B60K 28/06) [7]

 

21/

08..responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water [7]

 

21/

10..responsive to calamitous events, e.g. tornados, earthquakes (seismology G01V 1/00; indicating weather conditions G01W 1/00) [7]

 

21/

12..responsive to undesired emission of substances, e.g. pollution alarms (alarms on pipe-lines F17D 3/01) [7]

 

21/

14...Toxic gas alarms (G08B 21/16 takes precedence) [7]

 

21/

16...Combustible gas alarms [7]

 

21/

18.Status alarms (G08B 21/02 takes precedence) [7]

 

21/

20..responsive to moisture [7]

 

21/

22..responsive to presence or absence of persons [7]

 

21/

24..Reminder alarms, e.g. anti-loss alarms (devices to prevent loss of bags or the like A45C 13/24) [7]

 


23/

00Alarms responsive to unspecified undesired or abnormal conditions


25/

00Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems

25/

01.characterised by the transmission medium  [5]

25/

04..using a single signalling line, e.g. in a closed loop  [5]

25/

06..using power transmission lines (systems in general for transmission of information via power distribution lines H04B 3/54)  [5]

25/

08..using communication transmission lines (telephonic communication systems combined with alarm systems H04M 11/04)  [5]

25/

10..using wireless transmission systems  [5]

25/

12.Manually actuated calamity alarm transmitting arrangements  [5]

25/

14.Central alarm receiver or annunciator arrangements  [5]


26/

00Alarm systems in which substations are interrogated in succession by a central station


27/

00Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations


29/

00Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation

29/

02.Monitoring continuously signalling or alarm systems  [5]

29/

04..Monitoring of the detection circuits  [5]

29/

06..Monitoring of the line circuits, e.g. signalling of line faults (testing or locating faults in cables or lines in general G01R 31/02, G01R 31/08)  [5]

29/

08...Signalling of tampering with the line circuit  [5]

29/

10..Monitoring of the annunciator circuits  [5]

29/

12.Checking intermittently signalling or alarm systems  [5]

29/

14..checking the detection circuits  [5]

29/

16.Security signalling or alarm systems, e.g. redundant systems  [5]

29/

18.Prevention or correction of operating errors (G08B 29/02, G08B 29/12 take precedence)  [5]

29/

20..Calibration, including self-calibrating arrangements  [5]

29/

22...Provisions facilitating manual calibration, e.g. input or output provisions for testing; Holding of intermittent values to permit measurement  [5]

29/

24...Self-calibration, e.g. compensating for environmental drift or ageing of components  [5]

29/

26....by updating and storing reference thresholds  [5]

29/

28....by changing the gain of an amplifier  [5]


31/

00Predictive alarm systems characterised by extrapolation or other computation using updated historic data  [5]


  G08 - G08B 17/12   
 

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