CA1076678A - Fire-extinguishing system - Google Patents
Fire-extinguishing systemInfo
- Publication number
- CA1076678A CA1076678A CA262,099A CA262099A CA1076678A CA 1076678 A CA1076678 A CA 1076678A CA 262099 A CA262099 A CA 262099A CA 1076678 A CA1076678 A CA 1076678A
- Authority
- CA
- Canada
- Prior art keywords
- fire
- condition
- guarding
- switching
- signal
- Prior art date
- 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
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/44—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device only the sensor being in the danger zone
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire Alarms (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Alarm Systems (AREA)
- Manipulator (AREA)
- Burglar Alarm Systems (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A fire-extinguishing system is coupled with a guarding system for protecting the same region as that covered by the fire-extinguishing system and having a switching manipulator to switch over the guarding system between its operative condition and inop-erative condition, whereby the fire-extinguishing system can be set to an automatic operating mode in response to a signal from the switching manipulator and representative of the guarding system be-ing in its operative condition and can be set to a manual operating mode in response to a signal from the switching manipulator and re-presentative of the guarding system being in its inoperative condi-tion.
A fire-extinguishing system is coupled with a guarding system for protecting the same region as that covered by the fire-extinguishing system and having a switching manipulator to switch over the guarding system between its operative condition and inop-erative condition, whereby the fire-extinguishing system can be set to an automatic operating mode in response to a signal from the switching manipulator and representative of the guarding system be-ing in its operative condition and can be set to a manual operating mode in response to a signal from the switching manipulator and re-presentative of the guarding system being in its inoperative condi-tion.
Description
1076~78 This invention relates to a fire-extinguishing system, and particularly to a ire-extinguishing system which can be set to an automatic operating mode when nobody i~ within the region to be protected by the system and can be set to a manual operating mode when somebody is within the region.
A fire-extinguishing system has been proposed wherein a fire sensor or sensors are arranged at a desired location or loca-tions within the region to be protected by the system, for example at a position or positions in the ceiling of a room defining the region, and a nozzle or nozzles or a ~ire-extinguisher or fire-extinguishers capable of discharging a fire-extinguishing medium such as fire-extinguishing gas are placed at a desired location or locations within the region, whereby in response to a fire signal from the fire sensors, fire-extinguishing medium can be caused to spray from the nozzles or the fire-extinguishers to the region to effect automatic extinguishing of the fire. In such a fire-exting-uishing system, automatic spraying of fire-extinguishing medium will be effected in response to a fire signal from the fire sensors, even when nobody is within the region to be protected by the system, namely, when the region is in unattended condition. However, it is desirable to be able to set the system to a manual extinguishing mode during the time someone is within the region, namely, when the region is in attended condition, so that a person discovering a fire can manually start the fire-extinguisher. Thus, in fire-extinguish-ing systems it is desirable to be able to set the system to an auto-matic operating mode when the region to be protected thereby is un-attended and to be able to set the system to a manual operating mode when the region is attended.
On the other hand, there is known a guarding system where-in an intruder detecting device or devices are placed at a desiredlocation or locations within a region such as a room to be protected by the system to detect an intruder into the region and a remote 107667~
monitoring station is provided to receive a signal from the intru-der detecting devices to monitor the region. In such a guarding system a switching manipulator is normally provided. By means of the switching manipulator, the guarding system can be set to its operative condition when nobody is within the region to be protec-ted by the system and can be set to its inoperative condition when somebody is within the region. When the guarding system is set to its operative condition, signals from the intruder detecting de-vices can be transmitted to a remote monitoring station, while sig-nals from the intruder detecting devices are not tranqmitted to the remote monitoring station when the guarding system is set to its inoperative condition.
It is an object of this invention to provide a fire-extinguishing system capable of operating in the desirable manner as described above wherein a fire-extinguishing system for protect-ing a given region and a guarding system having a switching manipu-lator as described above for protecting the same region are coupled together so that signals representative of the unattended and at-tended conditions of the region from the switching manipulator can be utilized to effect mode switching operation of the fire-exting-uishing system.
A fire-extinguishing system is coupled with a guarding system for protecting the same region as covered by the fire-ex-tinguishing system and having a switching manipulator to switch over the guarding system between its operative condition and its in-operative condition, whereby the fire-extinguishing system can be set to an automatic operating mode in response to a signal from the switching manipulator and representative of the condition wherein the guarding system is in its operative condition and can be set to a manual operating mode in response to a signal from the switching manipulator and representative of the condition wherein the guard-ing system is in its inoperative condition.
107~j7~
An embodiment of the present invention will be describ-ed by way of example with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of one embodiment of a fire-extinguishing system coupled with a guarding system accord-to this invention; and Fig. 2 i9 a schematic diagram of one example of the circuit for coupling the fire-extinguishing system with the guarding system.
In Fig. 1 there is schematically illustrated a fire-extinguishing system coupled with a guarding system accordingto this invention. In this fire-extinguishing system 40, a fire sensor or sensors 40a are arranged at a desired location or locations within the region to be protected by the system, for example at a position or positions in the ceiling of a room de-fining the region, and a nozzle or nozzles or a fire extinguisher or fire extinguishers 40b capable of discharging a fire ex-tinguishing medium, such as fire extinguishing gas, are placed at a desired location or locations within the region, whereby in response to a fire sign~l from the fire sensors 40a, the fire extinguishing medium can be caused to spray from the nozzles or the fire extinguishers 40b to the region to effect automatic extinguishing of the fire. The guarding system comprises various sensors 25, such as intruder detecting devices, arranged at des-ired location~ within a region 10 to be protected by the guarding system, for example within a room of a building, and a monitoring device 21 located at a monintoring station 20 remote from the region 10. The group of sensors 25 is provided with such function as a function to detect any possible intruder in the region 10 or a function to confirm whether the region is in a closed condition or not, if the region is a room provided with a door or door~, so as to attain perfect guarding of ~he region 10. Various signals from the sensors 25 are suitably transformed and transmitted through a transmission line 22 to the monitoring B
. .
107ti~7~
device 21 by means of a warning signal transmitter 23. A switching manipulator 24 i3 associatPd with the transmitter 23. By manually operating the manipulator 24, the guarding system can be set to and manintained in its operative condition during the night or period when nobody is within the region 10, while the guarding system can be set to its inoperative condition when somebody is within the region 10. That is, only when a logical circuit 23a of the warning signal transmitter 23 identifies such a condition that it is allowed to change the guarding system into its oper-ative condition, for example, when it is confirmed that there isno one in the region 10 by the signal issued from the sensors 25, is the guarding system changed from its inoperative condition to its operative condition by manually closing a switch S of the switching manipulator 24. With the guarding system in its oper-ative condition, signals from the sensors 25 can be suitably transformed and transmitted to the monitoring device 21 of the station 20 by means of the warning signal transmitter 23. In a case where the logical circuit 23a does not identify such a condition that it is allowed to actuate the guarding system to guard the region 10, even though the switch S of the switching manipulator 24 is manually closed, the guarding system can not be actuated. On the other hand, if the switch S of the switching manipulator 24 is opened, the guarding system is changed to its inoperative condition, without any relation to the identification of the logical circuit 23a, and, if the sensors 25 detect someone in the region lO, even though the switch S of the switching man-ipulator 24 is maintained in a closed condition, the fire ex-tinguishing system 40 is changed to a free condition from its operative condition. With the guarding system in its inoperative condition, signals from the sensors 25 are prevented from being transmitted to the station 20.
A fire-extinguishing system 40 from protecting the same region 10 is coupled with the guarding ~ystem as described above.
B
..... .. , . ... ... i 1076~78 The signal is~ued from the signal transmitter 23 is coupledwith the switching signal issued from the switching manipulator 24 so that the combined signal is utilized to control the actuation of the fire-extinguishing system 40 as shown in Fig.
A fire-extinguishing system has been proposed wherein a fire sensor or sensors are arranged at a desired location or loca-tions within the region to be protected by the system, for example at a position or positions in the ceiling of a room defining the region, and a nozzle or nozzles or a ~ire-extinguisher or fire-extinguishers capable of discharging a fire-extinguishing medium such as fire-extinguishing gas are placed at a desired location or locations within the region, whereby in response to a fire signal from the fire sensors, fire-extinguishing medium can be caused to spray from the nozzles or the fire-extinguishers to the region to effect automatic extinguishing of the fire. In such a fire-exting-uishing system, automatic spraying of fire-extinguishing medium will be effected in response to a fire signal from the fire sensors, even when nobody is within the region to be protected by the system, namely, when the region is in unattended condition. However, it is desirable to be able to set the system to a manual extinguishing mode during the time someone is within the region, namely, when the region is in attended condition, so that a person discovering a fire can manually start the fire-extinguisher. Thus, in fire-extinguish-ing systems it is desirable to be able to set the system to an auto-matic operating mode when the region to be protected thereby is un-attended and to be able to set the system to a manual operating mode when the region is attended.
On the other hand, there is known a guarding system where-in an intruder detecting device or devices are placed at a desiredlocation or locations within a region such as a room to be protected by the system to detect an intruder into the region and a remote 107667~
monitoring station is provided to receive a signal from the intru-der detecting devices to monitor the region. In such a guarding system a switching manipulator is normally provided. By means of the switching manipulator, the guarding system can be set to its operative condition when nobody is within the region to be protec-ted by the system and can be set to its inoperative condition when somebody is within the region. When the guarding system is set to its operative condition, signals from the intruder detecting de-vices can be transmitted to a remote monitoring station, while sig-nals from the intruder detecting devices are not tranqmitted to the remote monitoring station when the guarding system is set to its inoperative condition.
It is an object of this invention to provide a fire-extinguishing system capable of operating in the desirable manner as described above wherein a fire-extinguishing system for protect-ing a given region and a guarding system having a switching manipu-lator as described above for protecting the same region are coupled together so that signals representative of the unattended and at-tended conditions of the region from the switching manipulator can be utilized to effect mode switching operation of the fire-exting-uishing system.
A fire-extinguishing system is coupled with a guarding system for protecting the same region as covered by the fire-ex-tinguishing system and having a switching manipulator to switch over the guarding system between its operative condition and its in-operative condition, whereby the fire-extinguishing system can be set to an automatic operating mode in response to a signal from the switching manipulator and representative of the condition wherein the guarding system is in its operative condition and can be set to a manual operating mode in response to a signal from the switching manipulator and representative of the condition wherein the guard-ing system is in its inoperative condition.
107~j7~
An embodiment of the present invention will be describ-ed by way of example with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of one embodiment of a fire-extinguishing system coupled with a guarding system accord-to this invention; and Fig. 2 i9 a schematic diagram of one example of the circuit for coupling the fire-extinguishing system with the guarding system.
In Fig. 1 there is schematically illustrated a fire-extinguishing system coupled with a guarding system accordingto this invention. In this fire-extinguishing system 40, a fire sensor or sensors 40a are arranged at a desired location or locations within the region to be protected by the system, for example at a position or positions in the ceiling of a room de-fining the region, and a nozzle or nozzles or a fire extinguisher or fire extinguishers 40b capable of discharging a fire ex-tinguishing medium, such as fire extinguishing gas, are placed at a desired location or locations within the region, whereby in response to a fire sign~l from the fire sensors 40a, the fire extinguishing medium can be caused to spray from the nozzles or the fire extinguishers 40b to the region to effect automatic extinguishing of the fire. The guarding system comprises various sensors 25, such as intruder detecting devices, arranged at des-ired location~ within a region 10 to be protected by the guarding system, for example within a room of a building, and a monitoring device 21 located at a monintoring station 20 remote from the region 10. The group of sensors 25 is provided with such function as a function to detect any possible intruder in the region 10 or a function to confirm whether the region is in a closed condition or not, if the region is a room provided with a door or door~, so as to attain perfect guarding of ~he region 10. Various signals from the sensors 25 are suitably transformed and transmitted through a transmission line 22 to the monitoring B
. .
107ti~7~
device 21 by means of a warning signal transmitter 23. A switching manipulator 24 i3 associatPd with the transmitter 23. By manually operating the manipulator 24, the guarding system can be set to and manintained in its operative condition during the night or period when nobody is within the region 10, while the guarding system can be set to its inoperative condition when somebody is within the region 10. That is, only when a logical circuit 23a of the warning signal transmitter 23 identifies such a condition that it is allowed to change the guarding system into its oper-ative condition, for example, when it is confirmed that there isno one in the region 10 by the signal issued from the sensors 25, is the guarding system changed from its inoperative condition to its operative condition by manually closing a switch S of the switching manipulator 24. With the guarding system in its oper-ative condition, signals from the sensors 25 can be suitably transformed and transmitted to the monitoring device 21 of the station 20 by means of the warning signal transmitter 23. In a case where the logical circuit 23a does not identify such a condition that it is allowed to actuate the guarding system to guard the region 10, even though the switch S of the switching manipulator 24 is manually closed, the guarding system can not be actuated. On the other hand, if the switch S of the switching manipulator 24 is opened, the guarding system is changed to its inoperative condition, without any relation to the identification of the logical circuit 23a, and, if the sensors 25 detect someone in the region lO, even though the switch S of the switching man-ipulator 24 is maintained in a closed condition, the fire ex-tinguishing system 40 is changed to a free condition from its operative condition. With the guarding system in its inoperative condition, signals from the sensors 25 are prevented from being transmitted to the station 20.
A fire-extinguishing system 40 from protecting the same region 10 is coupled with the guarding ~ystem as described above.
B
..... .. , . ... ... i 1076~78 The signal is~ued from the signal transmitter 23 is coupledwith the switching signal issued from the switching manipulator 24 so that the combined signal is utilized to control the actuation of the fire-extinguishing system 40 as shown in Fig.
2. Conse~uently, even if the switch S of the switchir.g mani-pulator 24 is closed, if someone is present in the region 10 or the door or doors of region 10 is not closed, since the logical circuit 23a of the signal transmitter 23 identifies a condition wherein the guarding system should not be changed to its operative condition, according to the signals from the sensors 25, the above-mentioned combined signal for actuation the fire-extinguishing system 40 is not created. As mentioned above, it is possible to selectively change the fire-extinguish-ing system 40 from the operative condition to the inoperative condition, and vice versa, according to the combined signal created by the identification signal of the logical circuit 24 of the signal transmitter 23 and the switching signal of the switch S of the switching manipulator 24.
In Fig. 2 there is schematically illustrated a circuit for coupling the fire-extinguishing system 40 with the guarding system. The circuit connects the fire-extinguishing system 40 to the warning signal transmitter 23 and the switch-ing manipulator 24 of the guarding system.
In operation, when nobody is within the region 10, namely, when the region 10 is unattended, a switch S of the switching manipulator 24 is closed to set the guarding system !
to its operative condition. When the switching manipulator ~ -2~ is closed, the potential of the input p~rtion of the inverter in block 23 becomes 0 volt so that the output level of the inverter becomes a logical 1 which is applied to the logical circuit in block 23. As a result, the guarding system is set ~3 1(~76678 to its warning state. At the same time, the potential at T
also becomes 0 volt so that the transistor in block 40 is not conductive. As a result, the output level of the transistor, which level i9 high, is applied to the logical circuit in block 40. Therefore, the fire-extinguishing system is also set to its automatic operating mode.
When somebody is within the region 10, namely, when the region 10 i~ attend~d, the switch S of the manipulator 24 is opened to set the guarding system to its inoperative condi-tion. When the switching manipulator 24 is open, the potential of the input portion of the inverter in block 23 becomes 4.5 volts, i.e., there is a logical 1 at the input to the inverter.
Thus, the output level of the inverter becomes a logical 0 which is applied to the logical circuit in block 23. As a result, the guarding system is no longer in its warning state.
At the same time, the potential at T also becomes 4.5 volts so that the transistor in block 40 is now conductive. The output level of the transistor, which level is low, i.e. a logical 0, is applied to the logical circuit in block 40. With the logical 0 applied to the logical circuit, the fire-extinguishing system is set to manual operation.
, .
., ...~
In Fig. 2 there is schematically illustrated a circuit for coupling the fire-extinguishing system 40 with the guarding system. The circuit connects the fire-extinguishing system 40 to the warning signal transmitter 23 and the switch-ing manipulator 24 of the guarding system.
In operation, when nobody is within the region 10, namely, when the region 10 is unattended, a switch S of the switching manipulator 24 is closed to set the guarding system !
to its operative condition. When the switching manipulator ~ -2~ is closed, the potential of the input p~rtion of the inverter in block 23 becomes 0 volt so that the output level of the inverter becomes a logical 1 which is applied to the logical circuit in block 23. As a result, the guarding system is set ~3 1(~76678 to its warning state. At the same time, the potential at T
also becomes 0 volt so that the transistor in block 40 is not conductive. As a result, the output level of the transistor, which level i9 high, is applied to the logical circuit in block 40. Therefore, the fire-extinguishing system is also set to its automatic operating mode.
When somebody is within the region 10, namely, when the region 10 i~ attend~d, the switch S of the manipulator 24 is opened to set the guarding system to its inoperative condi-tion. When the switching manipulator 24 is open, the potential of the input portion of the inverter in block 23 becomes 4.5 volts, i.e., there is a logical 1 at the input to the inverter.
Thus, the output level of the inverter becomes a logical 0 which is applied to the logical circuit in block 23. As a result, the guarding system is no longer in its warning state.
At the same time, the potential at T also becomes 4.5 volts so that the transistor in block 40 is now conductive. The output level of the transistor, which level is low, i.e. a logical 0, is applied to the logical circuit in block 40. With the logical 0 applied to the logical circuit, the fire-extinguishing system is set to manual operation.
, .
., ...~
Claims (2)
1. A fire-extinguishing system comprising in combination with a guarding system, said guarding system provided with at least a sensor for watching the condition of a region being subjected to said guarding system, a logical circuit for identify-ing the watching conditions of said region according to a signal issued from respective sensors, a switching manipulator for manually changed said guarding system for its inoperative con-dition to its operative condition and vice versa, said fire ex-tinguishing system provided with a signal transmitter for receiv-ing a signal of said logical circuit and said switching manipulator simultaneously, whereby, said fire extinguishing system is set to an automatically operative condition thereof in response to a combination of a signal of said logical circuit when said logical circuit identifies such a condition that said guarding system should be changed from its inoperative condition to its operative condition with a switching signal of said switching manipulator, when a switch of said switching manipulator is closed, and said fire extinguishing system is set to a manually operative con-dition thereof in response to a signal of said switching man-ipulator when said switch of said switching manipulator is man-ually opened.
2. A fire-extinguishing system as claimed in Claim 1 wherein said switching manipulator comprises a switch associated with a warning signal transmitter of said guarding system and capable of being manually actuated between two positions, whereby when said switch is actuated to one of said two positions said warning sig-nal transmitter is set to its operative condition and simultaneous-ly an electric potential is caused to appear on a terminal and when said switch is actuated to the other of said two positions said warning signal transmitter is set to its inoperative condition and simultaneously a different electric potential is caused to appear on said terminal, and said fire-extinguishing system further com-prises an arrangement comprising a transistor and a logical circuit for setting said fire-extinguishing system to said automatically op-erating mode in response to said potential on said terminal and setting said fire-extinguishing system to said manual operating mode in response to said different potential on said terminal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8881076A JPS5314998A (en) | 1976-07-26 | 1976-07-26 | Fire extinguishing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1076678A true CA1076678A (en) | 1980-04-29 |
Family
ID=13953236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA262,099A Expired CA1076678A (en) | 1976-07-26 | 1976-09-27 | Fire-extinguishing system |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS5314998A (en) |
| AT (1) | AT373156B (en) |
| AU (1) | AU503821B2 (en) |
| BE (1) | BE847275A (en) |
| CA (1) | CA1076678A (en) |
| CH (1) | CH614630A5 (en) |
| DE (1) | DE2646426C3 (en) |
| DK (1) | DK149221C (en) |
| FR (1) | FR2359617A1 (en) |
| GB (1) | GB1497009A (en) |
| IN (1) | IN145184B (en) |
| IT (1) | IT1072940B (en) |
| NL (1) | NL7611266A (en) |
| NZ (1) | NZ182159A (en) |
| SE (1) | SE427987B (en) |
| SU (1) | SU712009A3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227577A (en) * | 1976-07-26 | 1980-10-14 | Security Patrols Co., Ltd. | Fire-extinguishing system |
| DE3923935A1 (en) * | 1989-07-19 | 1991-01-24 | Hekatron Gmbh | FIRE EXTINGUISHING SYSTEM FOR GASEOUS EXTINGUISHING MEDIA |
| CN112820065A (en) * | 2020-12-31 | 2021-05-18 | 国家能源集团煤焦化有限责任公司 | Intelligent fire-fighting command system and method for performing fire-fighting drilling by using same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931236A (en) * | 1972-07-21 | 1974-03-20 |
-
1976
- 1976-07-26 JP JP8881076A patent/JPS5314998A/en active Granted
- 1976-09-24 DK DK433476A patent/DK149221C/en not_active IP Right Cessation
- 1976-09-24 NZ NZ182159A patent/NZ182159A/en unknown
- 1976-09-27 IN IN1778/CAL/1976A patent/IN145184B/en unknown
- 1976-09-27 CA CA262,099A patent/CA1076678A/en not_active Expired
- 1976-09-28 AU AU18151/76A patent/AU503821B2/en not_active Expired
- 1976-09-29 SE SE7610786A patent/SE427987B/en unknown
- 1976-09-30 IT IT27857/76A patent/IT1072940B/en active
- 1976-10-05 FR FR7629885A patent/FR2359617A1/en active Granted
- 1976-10-08 GB GB41954/76A patent/GB1497009A/en not_active Expired
- 1976-10-11 AT AT0754476A patent/AT373156B/en not_active IP Right Cessation
- 1976-10-12 NL NL7611266A patent/NL7611266A/en not_active Application Discontinuation
- 1976-10-14 BE BE171507A patent/BE847275A/en not_active IP Right Cessation
- 1976-10-14 DE DE2646426A patent/DE2646426C3/en not_active Expired
- 1976-10-14 CH CH1298776A patent/CH614630A5/en not_active IP Right Cessation
- 1976-10-14 SU SU762409562A patent/SU712009A3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| NL7611266A (en) | 1978-01-30 |
| DE2646426A1 (en) | 1978-02-02 |
| SE7610786L (en) | 1978-01-27 |
| JPS5314998A (en) | 1978-02-10 |
| DE2646426C3 (en) | 1986-03-27 |
| FR2359617A1 (en) | 1978-02-24 |
| AU1815176A (en) | 1978-05-04 |
| AU503821B2 (en) | 1979-09-20 |
| CH614630A5 (en) | 1979-12-14 |
| SE427987B (en) | 1983-05-30 |
| DK149221C (en) | 1987-01-19 |
| IT1072940B (en) | 1985-04-13 |
| BE847275A (en) | 1977-01-31 |
| AT373156B (en) | 1983-12-27 |
| GB1497009A (en) | 1978-01-05 |
| SU712009A3 (en) | 1980-01-25 |
| NZ182159A (en) | 1980-08-26 |
| DK149221B (en) | 1986-03-24 |
| JPS565546B2 (en) | 1981-02-05 |
| FR2359617B1 (en) | 1980-03-28 |
| IN145184B (en) | 1978-09-02 |
| DE2646426B2 (en) | 1980-02-21 |
| DK433476A (en) | 1978-01-27 |
| ATA754476A (en) | 1983-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5790019A (en) | Emergency alarm system | |
| US3634846A (en) | Intrusion and fire detection system | |
| AU2009334131B2 (en) | Sprinkler with an integrated valve, and fire-extinguishing system using same | |
| US4227577A (en) | Fire-extinguishing system | |
| US2892181A (en) | Vehicle burglar alarm | |
| US4356476A (en) | Multiple alarm detector monitoring and command system | |
| CA1076678A (en) | Fire-extinguishing system | |
| US4074248A (en) | Dual operating control circuits for intrusion detection systems | |
| US4921012A (en) | Automatic water shut-off apparatus for building protection | |
| US2086818A (en) | Alarm system | |
| JPH0622358Y2 (en) | Control circuit for gas fire extinguishing equipment | |
| KR102530443B1 (en) | Emergency door automatic opening and closing device | |
| JP2002355331A (en) | Sprinkler extinguishing equipment | |
| JPH04469Y2 (en) | ||
| JP2589129B2 (en) | Remote disaster prevention equipment for unmanned buildings | |
| JPS58175574A (en) | Safety apparatus of gas extinguishing installation | |
| GB1575484A (en) | Coupled fire extinguishing and guarding systems | |
| US3798628A (en) | Protective systems and apparatus therefor | |
| US3872459A (en) | Burglar and warning alarm and system | |
| KR200232389Y1 (en) | Exit auto open lock | |
| JP3267717B2 (en) | Automatic fire extinguisher | |
| AU2002335708B2 (en) | System and method for freight refrigeration power control | |
| GB681165A (en) | Improvements in or relating to automatic burglar alarms | |
| JPH0229498Y2 (en) | ||
| CA1197914A (en) | Fire alarm control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |