CA1103777A - Back up alarm system - Google Patents
Back up alarm systemInfo
- Publication number
- CA1103777A CA1103777A CA321,559A CA321559A CA1103777A CA 1103777 A CA1103777 A CA 1103777A CA 321559 A CA321559 A CA 321559A CA 1103777 A CA1103777 A CA 1103777A
- Authority
- CA
- Canada
- Prior art keywords
- circuit
- alarm system
- burglar alarm
- relay
- relay means
- 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
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
Abstract of the Disclosure:
Electrically conductive leads electrically connect a relay, a source of electrical energy and a radio transmitter for transmitting radio signals in a back up circuit. The relay is electrically connected to the electric circuit of a burglar alarm system.
When an electrical conductor of the burglar alarm system is cut or short circuited, the relay closes the back up circuit to actuate the transmitter to transmit radio signals indicating that an electrical conductor of the burglar alarm circuit has been cut or short-circuited.
Electrically conductive leads electrically connect a relay, a source of electrical energy and a radio transmitter for transmitting radio signals in a back up circuit. The relay is electrically connected to the electric circuit of a burglar alarm system.
When an electrical conductor of the burglar alarm system is cut or short circuited, the relay closes the back up circuit to actuate the transmitter to transmit radio signals indicating that an electrical conductor of the burglar alarm circuit has been cut or short-circuited.
Description
~37~7~
B ~qround of the Invention:
The p.resent invention relates to a bac~ up alarm system. More particularly, the invention relates to a back up alarm system for a burglar alarm system utilizing an electric circuit.
The embodiments of FIGS. 1 to 4 a.re disclosed in the United States Patent No. 4,012,728, issued to the present inventor on Marc~ 15, 1977.
Alarm systemis are disclosed in United States Patent No. 3,204,222, issued in August, 1965 ko Montroy et al, United States Patent .No. 3,688,256, issued in August, 1972 to D'Ausilio et al, United States Patent NoO
3,703,714, issued in November, 1972 to Andrews and United States Patent No. 3,893,069, issued in July, 1975 to Mason.
O~jects of the in~ention are to provide a back up ala.rm system for a burgla.r alarm sys-tem, w~ich bac~ u~
alarm system functions more effectively and more rapidly than a silent burgla.r alarm system to provide complete p.rotection from burglars, since the back up alarm system functions efficiently, effectively and reliably by wireless transmission to wa.rn of t~e cutting of an elect.rical con-ductor of a burglar alarm system circuit and to warn of -the short-circuiting of electrical conductors of a burglar alarm system such as, for example, by wire cutters.
~J13~77 Brief_Description of the Drawinqs:
In order that the invention may be readily carried into effect, it will now be described with reference to the accompanying drawings, wherein:
; FIG. 1 is a block diagram illustrating the basic back up alarm system of the invention;
FIG, 2 iS a block diagram of a first embodiment of the bacX up alarm system of the invention;
FIGo 3 is a block diagram of a second embodiment of the back up alarm system of the invention; :. :
' ~
FIGo 4 is a block diagram of a third embodiment ~ of the back up alarm system of the invention;
:;; FIG~ 5 i5 a block diagram of a fourth embodiment ; of the back up alarm system of the invention; and .
: FIGo 6 is a block diagram of a fifth embodiment of the back up alarm system of the invention~
In the FIGS~ the same components are identified ;:
by the same reference numerals.
Detailed Descri~tion of the _nvention:
The back up alarm system of the invention is for a burglar alarm system utilizing an electric circuit 1 ~.
haviny electrical conductors (not shown in the FIGSo)o `, :'`,; ' .~
'~`
.~ ~
.
T'he back up alarm system of the invention com-prises a loek in relay 2 electrically connected to the electric circuit 1 of t'he burglar alar~ system. The relay
B ~qround of the Invention:
The p.resent invention relates to a bac~ up alarm system. More particularly, the invention relates to a back up alarm system for a burglar alarm system utilizing an electric circuit.
The embodiments of FIGS. 1 to 4 a.re disclosed in the United States Patent No. 4,012,728, issued to the present inventor on Marc~ 15, 1977.
Alarm systemis are disclosed in United States Patent No. 3,204,222, issued in August, 1965 ko Montroy et al, United States Patent .No. 3,688,256, issued in August, 1972 to D'Ausilio et al, United States Patent NoO
3,703,714, issued in November, 1972 to Andrews and United States Patent No. 3,893,069, issued in July, 1975 to Mason.
O~jects of the in~ention are to provide a back up ala.rm system for a burgla.r alarm sys-tem, w~ich bac~ u~
alarm system functions more effectively and more rapidly than a silent burgla.r alarm system to provide complete p.rotection from burglars, since the back up alarm system functions efficiently, effectively and reliably by wireless transmission to wa.rn of t~e cutting of an elect.rical con-ductor of a burglar alarm system circuit and to warn of -the short-circuiting of electrical conductors of a burglar alarm system such as, for example, by wire cutters.
~J13~77 Brief_Description of the Drawinqs:
In order that the invention may be readily carried into effect, it will now be described with reference to the accompanying drawings, wherein:
; FIG. 1 is a block diagram illustrating the basic back up alarm system of the invention;
FIG, 2 iS a block diagram of a first embodiment of the bacX up alarm system of the invention;
FIGo 3 is a block diagram of a second embodiment of the back up alarm system of the invention; :. :
' ~
FIGo 4 is a block diagram of a third embodiment ~ of the back up alarm system of the invention;
:;; FIG~ 5 i5 a block diagram of a fourth embodiment ; of the back up alarm system of the invention; and .
: FIGo 6 is a block diagram of a fifth embodiment of the back up alarm system of the invention~
In the FIGS~ the same components are identified ;:
by the same reference numerals.
Detailed Descri~tion of the _nvention:
The back up alarm system of the invention is for a burglar alarm system utilizing an electric circuit 1 ~.
haviny electrical conductors (not shown in the FIGSo)o `, :'`,; ' .~
'~`
.~ ~
.
T'he back up alarm system of the invention com-prises a loek in relay 2 electrically connected to the electric circuit 1 of t'he burglar alar~ system. The relay
2 may comprise any suitable relay having an energizing winding and a relay switch or relay contacts controlled in position by such energizing winding. In the embodiments of FIGS~ 20 3 and 4, the energizing winding of the relay 2 is energized by the eireuit 1 of the burglar alarm and maintains the relay eontaets normal]y open, so that as long as the burglar alarm cireuit is elosed and the burglary alarm system is in operative condition, t'he relay contacts are open. As soon as a eonductor of the burglar alarm circuit 1 of the embodiments of FIGSo 2~ 3 and 4 is cut by a burglar, or due to any other circumstance, so that the burglar alarm system beeomes inoperative, the relay energizing winding of the relay 2 eloses the relay contacts t'hereof, and the relay energizing winding remains deenergized until it i.s reset by a reset switc~, ~ereinafter describedO
In t'he embodiments of FIGSo 5 and 6, the energizing winding of the relay 2 is deenergized, as is t'he eircuit 1 of the burglar alarm and said cireuit maintains the relay contacts normally open, so t~at as long as the burglar alarm eircuit remains deenergized and the burglar alaxm system is in operative condition, the relay c~ntacts are openO As soon as a conductor of the burglar alarm ' ~' :
.
~3~7~ ~
circuit 1 o~ t~e embodiments o FIGS. 5 and 6 is energized or short-circuited, by a burglar, so that the burglar alarm system becomesinoperative, the relay energiz-ing winding of the relay 2 closes the relay contacts there-of, and the relay energizing winding remains energized until it is reset by the reset switch.
The back up alarm system further comprises electrically conductive leads 3, 4 and 5 electrically : connecting the lock in relay 2, a source of electrical . 10 energy 6 of any suitable type such as, Eor example, a : battery, and a radio transmitter 7 of any suitable type ~or transmitting radio signals, in a back up circuit with t~e burglar alarm circuit, as shown in FIG. lo In the embodiments of FIGSo 2, 3 and 4, w~en an electrical conductor of the burglar alarm circuit 1 is cut, the relay energizing winding of the lock in relay 2 becomes deenergized and permits the relay contacts thereof ~ to close thereby closing the back up circuit to actuate the ~ :~
:~ transmitter 7. When the transmitter 7 of the embodiments . 20 of FIGS. 2, 3 and 4 is actuatedj it transmits radio signals indicating that an electrical conductor o~ the burglar alarm circuit 1 has been cuto It also activates an ~ audible alarm such as, for example, a buzzer 8.
; In the embodiments of FIGS. 5 and 6, when an ~- electrical conductor of the burglar alarm circuit 1 is ~- short-circuited, the relay energizing winding of t~e i 377~7 lock in relay 2 becomas energiæed and permits t~e relay contacts t~ereof to close thereby closing the back up circuit to actuate the transmitter 7. When the trans-mitter 7 of the embodiments o FIGS. 5 and 6 is actuated, it transmits radio si.gnals indicat.ing that an elec-trical conductor of the burglar alarm circuit 1 has been short-circuited. It also activates the buzzer 8.
A reset switch 9 is electrically connected to the lock in relay 2 ~or manually resetting the back up circu.it, in the embodiments of FIGS. 2, 3~ 5 and 6. An additional reset switch 9', which is normally open, is provided in shunt with the battery 6, in the embodiment of FIG. 6.
; - A radio receiver 10 of any suitable known type (FIGSo 2 and 6) receives signals transmitted by the transmitter 7 thereby indicating an alarm condition at such receiver.
The embodiments of FIGS. 3 and 4 include a normally open control switch lock 11 and a key 12 which fits a nor~ally~cclosed control switcho In the embodiment ; 20 of FIG. 6, the normally closed control switch 12l com-.~ bines a key arrangement w~ich controls a normally open :~ alarm switch or switches 18 and is connected to the loc~
... ~ in relay 2 and the battery 6. The key arrangement is unlocked for operation by a key, as in the embodiments of FIGS. 3 and 4O In the embodiment of FIG. 5, the normally closed control switch 12l controls the electric circuit 1.
:~
.. . ..
~37~7 In the embodiments of FIGSo 3 and 4, the normally closed control switch or key 12 controls a mat 17 and a normally open alarm switch.. The control switc~
or key 12 is connected to the locl~ ln relay 2 and the battery 16 and is unlocked for operation by a key.
In the embodiment of FIGo 3, a fire detector 13, a panic switch 14, a trap 15 and the battery 16 are connected in circuit with the loc~ in relay 20 The ~ire detector 13 and the panic switch 14 should not be con-trolled by any control switch, unless desiredO
The embodiment of FIGv 4 is the same as that ofFIG~ 3, except that in FIGo 4 the normally open control switch lock 11 controls t~e trap 15 only, w~nereas in the embodiment oE FIG~ 3 it controls the operation of ~he fire de-tector 13 and the trap 15.
A trap is a switch or switches, connected in series and normally closed, used as an alarm switch. The trap may be on a door or a window and may comprise any suitable type of alarm switchv The embodiment of FIG~ 6 includes the ~ire detector 13, the panic switch 14 and an alarm switch or switches 18. The alarm switch or switches of the embodiment of FIGo 6 are normally open and are connected in circuit with the lock in relay 2. The alarm switches 18 may be placed on doors or windows and may comprise any suitable type of alarm switchesO
In t'he embodiments of FIGSo 5 and 6, the energizing winding of the relay 2 is deenergized, as is t'he eircuit 1 of the burglar alarm and said cireuit maintains the relay contacts normally open, so t~at as long as the burglar alarm eircuit remains deenergized and the burglar alaxm system is in operative condition, the relay c~ntacts are openO As soon as a conductor of the burglar alarm ' ~' :
.
~3~7~ ~
circuit 1 o~ t~e embodiments o FIGS. 5 and 6 is energized or short-circuited, by a burglar, so that the burglar alarm system becomesinoperative, the relay energiz-ing winding of the relay 2 closes the relay contacts there-of, and the relay energizing winding remains energized until it is reset by the reset switch.
The back up alarm system further comprises electrically conductive leads 3, 4 and 5 electrically : connecting the lock in relay 2, a source of electrical . 10 energy 6 of any suitable type such as, Eor example, a : battery, and a radio transmitter 7 of any suitable type ~or transmitting radio signals, in a back up circuit with t~e burglar alarm circuit, as shown in FIG. lo In the embodiments of FIGSo 2, 3 and 4, w~en an electrical conductor of the burglar alarm circuit 1 is cut, the relay energizing winding of the lock in relay 2 becomes deenergized and permits the relay contacts thereof ~ to close thereby closing the back up circuit to actuate the ~ :~
:~ transmitter 7. When the transmitter 7 of the embodiments . 20 of FIGS. 2, 3 and 4 is actuatedj it transmits radio signals indicating that an electrical conductor o~ the burglar alarm circuit 1 has been cuto It also activates an ~ audible alarm such as, for example, a buzzer 8.
; In the embodiments of FIGS. 5 and 6, when an ~- electrical conductor of the burglar alarm circuit 1 is ~- short-circuited, the relay energizing winding of t~e i 377~7 lock in relay 2 becomas energiæed and permits t~e relay contacts t~ereof to close thereby closing the back up circuit to actuate the transmitter 7. When the trans-mitter 7 of the embodiments o FIGS. 5 and 6 is actuated, it transmits radio si.gnals indicat.ing that an elec-trical conductor of the burglar alarm circuit 1 has been short-circuited. It also activates the buzzer 8.
A reset switch 9 is electrically connected to the lock in relay 2 ~or manually resetting the back up circu.it, in the embodiments of FIGS. 2, 3~ 5 and 6. An additional reset switch 9', which is normally open, is provided in shunt with the battery 6, in the embodiment of FIG. 6.
; - A radio receiver 10 of any suitable known type (FIGSo 2 and 6) receives signals transmitted by the transmitter 7 thereby indicating an alarm condition at such receiver.
The embodiments of FIGS. 3 and 4 include a normally open control switch lock 11 and a key 12 which fits a nor~ally~cclosed control switcho In the embodiment ; 20 of FIG. 6, the normally closed control switch 12l com-.~ bines a key arrangement w~ich controls a normally open :~ alarm switch or switches 18 and is connected to the loc~
... ~ in relay 2 and the battery 6. The key arrangement is unlocked for operation by a key, as in the embodiments of FIGS. 3 and 4O In the embodiment of FIG. 5, the normally closed control switch 12l controls the electric circuit 1.
:~
.. . ..
~37~7 In the embodiments of FIGSo 3 and 4, the normally closed control switch or key 12 controls a mat 17 and a normally open alarm switch.. The control switc~
or key 12 is connected to the locl~ ln relay 2 and the battery 16 and is unlocked for operation by a key.
In the embodiment of FIGo 3, a fire detector 13, a panic switch 14, a trap 15 and the battery 16 are connected in circuit with the loc~ in relay 20 The ~ire detector 13 and the panic switch 14 should not be con-trolled by any control switch, unless desiredO
The embodiment of FIGv 4 is the same as that ofFIG~ 3, except that in FIGo 4 the normally open control switch lock 11 controls t~e trap 15 only, w~nereas in the embodiment oE FIG~ 3 it controls the operation of ~he fire de-tector 13 and the trap 15.
A trap is a switch or switches, connected in series and normally closed, used as an alarm switch. The trap may be on a door or a window and may comprise any suitable type of alarm switchv The embodiment of FIG~ 6 includes the ~ire detector 13, the panic switch 14 and an alarm switch or switches 18. The alarm switch or switches of the embodiment of FIGo 6 are normally open and are connected in circuit with the lock in relay 2. The alarm switches 18 may be placed on doors or windows and may comprise any suitable type of alarm switchesO
3~777 While the invention has been described by means of specific ex~m~les and in sp9cific e~bodiments, I do not wish to be limited theretop for obvious modi-fications : will occur to those skilled in the art without departing from the spirit and scope of the invention.
~.-; ' .
~,
~.-; ' .
~,
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A back up alarm system for a burglar alarm system utilizing an electric circuit having electrical conductors for operating a burglar alarm under predetermined circumstances, said back up alarm system comprising relay means electrically connected to the electric circuit of a burglar alarm system having electrical conductors;
a source of electrical energy a radio transmitter for transmitting radio signals; and electrically conductive leads electrically connecting the relay means, the source of electrical energy and the radio transmitter in a back up circuit with the burglar alarm circuit in a manner whereby the relay means is deenergized and maintains the relay means normally open as long as the burglar alarm system is in operative deenergized condition and when electrical conductors of the burglar alarm circuit are short-circuited, the relay means closes the back up circuit to actuate the transmitter to transmit radio signals indicating that an electrical conductor of the burglar alarm circuit has been short-circuited.
a source of electrical energy a radio transmitter for transmitting radio signals; and electrically conductive leads electrically connecting the relay means, the source of electrical energy and the radio transmitter in a back up circuit with the burglar alarm circuit in a manner whereby the relay means is deenergized and maintains the relay means normally open as long as the burglar alarm system is in operative deenergized condition and when electrical conductors of the burglar alarm circuit are short-circuited, the relay means closes the back up circuit to actuate the transmitter to transmit radio signals indicating that an electrical conductor of the burglar alarm circuit has been short-circuited.
2. A back up alarm system as claimed in claim 1, further comprising a reset switch electrically connected to the relay means for manually resetting the back up circuit.
3. A back up alarm system as claimed in claim 1, further comprising a radio receiver for receiving signals transmitted by the transmitter thereby indicating an alarm condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA321,559A CA1103777A (en) | 1979-02-15 | 1979-02-15 | Back up alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA321,559A CA1103777A (en) | 1979-02-15 | 1979-02-15 | Back up alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1103777A true CA1103777A (en) | 1981-06-23 |
Family
ID=4113549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA321,559A Expired CA1103777A (en) | 1979-02-15 | 1979-02-15 | Back up alarm system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1103777A (en) |
-
1979
- 1979-02-15 CA CA321,559A patent/CA1103777A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |