GB2187017A - Security plug alarm system - Google Patents

Security plug alarm system Download PDF

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Publication number
GB2187017A
GB2187017A GB08621251A GB8621251A GB2187017A GB 2187017 A GB2187017 A GB 2187017A GB 08621251 A GB08621251 A GB 08621251A GB 8621251 A GB8621251 A GB 8621251A GB 2187017 A GB2187017 A GB 2187017A
Authority
GB
United Kingdom
Prior art keywords
plug
socket
alarm
sensing means
orthe
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.)
Withdrawn
Application number
GB08621251A
Other versions
GB8621251D0 (en
Inventor
Philip Robert Crouch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB8621251D0 publication Critical patent/GB8621251D0/en
Publication of GB2187017A publication Critical patent/GB2187017A/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1409—Mechanical actuation by lifting or attempted removal of hand-portable articles for removal detection of electrical appliances by detecting their physical disconnection from an electrical system, e.g. using a switch incorporated in the plug connector

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

A security system comprising a plug 10 and a socket 12 which are interengagable to enable an electrical connection, and an alarm means, the plug and/or the socket having auxiliary sensing means 13, additional to the contact or contacts 17, which senses when the plug 10 is removed from the socket 12 and generates a signal to activate the alarm means. The alarm means is provided in or on an appliance, or permanently installed within a building. The mains conductor cable 15 to the appliance is connected to the plug 10 and contains one or more conductors 14 connected to the sensing means 13 within the plug 10. Thus unauthorized removal of the plug 10 from the socket 12 or the electrical cable 15 being severed will activate the alarm means. The sensing means may comprise a switch having an actuating member resiliently biased outwardly of the plug or socket, this member being retained in position against the bias when the plug and socket are engaged. Alternatively, the sensing means comprises a proximity switch. In another embodiment, an auxiliary contact of the plug acts to make or break an electrical circuit. <IMAGE>

Description

SPECIFICATION Security plug alarm system This invention relates to a security plug alarm system.
On average one home in England and Wales is broken into every minute, almost 90% according to police statistics, are opportunist crimes, some alarm systems for electrical appliances are available as a deterant against theft, alarm system for electrical appliances however, do not incorporate security of the appliances power plug and cable, which would haveto be disconnected if stolen.
According to the present invention there is provided a security plug alarm system comprising a plug and/or a plug socket, housing aswitching means,the mains conductor cable connected to the plug and/or plug socket and one or more conductors connected to the switching means, are contained within the same cable sheath but being electrically insulated therefrom, the conductors connected to the switching means of the plug and/orthe plug socket are passed into an alarm means that may be inside or attached to an appliance, or into an alarm permanently installed within a building, the alarm means being powered from its own power source, and the plug sockets having mains on/off switches so as the mains to the appliance may be switched off.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: Figures land 2 shows in perspective a plug and socket with switching means for single appliance security.
Figures 3 and 4 shows in perspective a plug and socket with switching means and the wiring to a pluralityofsensing means.
Referring to the drawing the security plug alarm system comprising a plug 10 and socket 12 which are interengagable to enable an electrical connection to be made between a contactofthe plug 10 and a con tactofthe socket 12, and an alarm means, the plug 10 and/orthe socket 12 having auxiliary sensing means 13 additional to the contact or contacts 17 which sense when the plug 10 is removed from the socket 12 and generates a signal to activate the alarm means,thesensing meansl3Figurel comprisesa switch mounted in or on the plug 10 orthe socket 12, the switch 13 having an actuating member 18 resilient biased outwardly of the plug 10 or the socket 12 which member is retained in a position against the force of the resilient biasing means when the plug 10 is in the socket 12, and moves outwardly under the force ofthe resilient biasing means when the plug 10 is removed from the socket 12, to close or open a ciruit, a proximity switch such as a magnetically operated reed switch 13 Figure 2 mounted in or on the plug 10 orthe socket 12, which switch 13 closes a ciruit when the plug 10 is received in the socket 12, and opensthe circuitwhenthe plug 10 is removed, a contact or contacts 13 Figure 3 and 4 is or are provided on an extending element carried on the plug 10 orthe socket 12, which is received in an op ening 13 of the socket 12 orthe plug 10 respectively in which the corresponding contact or contacts 13 of the socket 12 orthe plug 10 are provided, the sensing means 13 is electrically connected to the alarm means when the plug 10 is received in the socket 12, and disconnected when the plug 10 is removed, by the cable 15 which carries the mainconductortothe appliance and one or more conductors 14connected to the sensing means 13withinthe plug 10,allthe conductors being contained within the same cable sheath 15 but electrically insulated therefrom, the conductor or conductors 14 from the sensing means 13 in or on the plug 10 and/or socket 12 are passed into the alarm means which is inside or attached to an appliance, or permanently installed within a building, whereby this conductor or conductors 14 can be connected to a pluralityofsensing means 13 Figure 3 and 4 within a plurality of sockets 12, the alarm means is powered from its own power source, and the plug sockets 12 having mains on/off switches 16 so as the mains power may be switched offwhen the appliance is not in use, undertheforementioned system unauthorized removal of the power plug 10 orthe cable 15 being severed will result in the alarm means being activated.
On the accompanying drawing all electric mains conductors or contacts have been left blank on plugs 10 and sockets 12 this area is designated by the number 17.
1. A security system comprising a plug and a socket which are interengagableto enable an electrical connection to be made between a contact of the plug and a contact of the socket, and an alarm means, the plug and/or the socket having auxiliary sensing means additional to the contact or contacts, which sense when the plug is removed from the socket and generates a signal to activate the alarm means.
2. Asecuritysystem according to Claim 1 wherein the sensing means comprises a switch mounted in or on the plug or the socket, the switch having an actuating member resilient biased outwardly of the plug orthe socket which member is retained in a position against the force of the resilient biasing means when the plug is in the socket, and moves outwardly underthe force of the resiliently biasing means when the plug is removed from the socket, to close or open a circuit.
3. Asecuritysystem according to Claim 1 wherein the sensing means comprises a proximity switch (such as a magnetically operated read switch) mounted in or on the plug or the socket, which switch closes a circuit when the plug is received in the socket and opens the circuit when the plug is removed,to generate the signal to activate the alarm.
4. Asecuritysystem according to Claim 1 wherein the sensing means comprises auxiliary contacts ofthe plug and the socket, whereby when the plug is received in the socket an electrical circuit is made, and when the plug is removed from the socket the circuit is broken to thus generate a signal to ac tivatethe alarm means.
5. Asecuritysystem according to Claim 4
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (17)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Security plug alarm system This invention relates to a security plug alarm system. On average one home in England and Wales is broken into every minute, almost 90% according to police statistics, are opportunist crimes, some alarm systems for electrical appliances are available as a deterant against theft, alarm system for electrical appliances however, do not incorporate security of the appliances power plug and cable, which would haveto be disconnected if stolen. According to the present invention there is provided a security plug alarm system comprising a plug and/or a plug socket, housing aswitching means,the mains conductor cable connected to the plug and/or plug socket and one or more conductors connected to the switching means, are contained within the same cable sheath but being electrically insulated therefrom, the conductors connected to the switching means of the plug and/orthe plug socket are passed into an alarm means that may be inside or attached to an appliance, or into an alarm permanently installed within a building, the alarm means being powered from its own power source, and the plug sockets having mains on/off switches so as the mains to the appliance may be switched off. A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: Figures land 2 shows in perspective a plug and socket with switching means for single appliance security. Figures 3 and 4 shows in perspective a plug and socket with switching means and the wiring to a pluralityofsensing means. Referring to the drawing the security plug alarm system comprising a plug 10 and socket 12 which are interengagable to enable an electrical connection to be made between a contactofthe plug 10 and a con tactofthe socket 12, and an alarm means, the plug 10 and/orthe socket 12 having auxiliary sensing means 13 additional to the contact or contacts 17 which sense when the plug 10 is removed from the socket 12 and generates a signal to activate the alarm means,thesensing meansl3Figurel comprisesa switch mounted in or on the plug 10 orthe socket 12, the switch 13 having an actuating member 18 resilient biased outwardly of the plug 10 or the socket 12 which member is retained in a position against the force of the resilient biasing means when the plug 10 is in the socket 12, and moves outwardly under the force ofthe resilient biasing means when the plug 10 is removed from the socket 12, to close or open a ciruit, a proximity switch such as a magnetically operated reed switch 13 Figure 2 mounted in or on the plug 10 orthe socket 12, which switch 13 closes a ciruit when the plug 10 is received in the socket 12, and opensthe circuitwhenthe plug 10 is removed, a contact or contacts 13 Figure 3 and 4 is or are provided on an extending element carried on the plug 10 orthe socket 12, which is received in an op ening 13 of the socket 12 orthe plug 10 respectively in which the corresponding contact or contacts 13 of the socket 12 orthe plug 10 are provided, the sensing means 13 is electrically connected to the alarm means when the plug 10 is received in the socket 12, and disconnected when the plug 10 is removed, by the cable 15 which carries the mainconductortothe appliance and one or more conductors 14connected to the sensing means 13withinthe plug 10,allthe conductors being contained within the same cable sheath 15 but electrically insulated therefrom, the conductor or conductors 14 from the sensing means 13 in or on the plug 10 and/or socket 12 are passed into the alarm means which is inside or attached to an appliance, or permanently installed within a building, whereby this conductor or conductors 14 can be connected to a pluralityofsensing means 13 Figure 3 and 4 within a plurality of sockets 12, the alarm means is powered from its own power source, and the plug sockets 12 having mains on/off switches 16 so as the mains power may be switched offwhen the appliance is not in use, undertheforementioned system unauthorized removal of the power plug 10 orthe cable 15 being severed will result in the alarm means being activated. On the accompanying drawing all electric mains conductors or contacts have been left blank on plugs 10 and sockets 12 this area is designated by the number 17. CLAIMS
1. A security system comprising a plug and a socket which are interengagableto enable an electrical connection to be made between a contact of the plug and a contact of the socket, and an alarm means, the plug and/or the socket having auxiliary sensing means additional to the contact or contacts, which sense when the plug is removed from the socket and generates a signal to activate the alarm means.
2. Asecuritysystem according to Claim 1 wherein the sensing means comprises a switch mounted in or on the plug or the socket, the switch having an actuating member resilient biased outwardly of the plug orthe socket which member is retained in a position against the force of the resilient biasing means when the plug is in the socket, and moves outwardly underthe force of the resiliently biasing means when the plug is removed from the socket, to close or open a circuit.
3. Asecuritysystem according to Claim 1 wherein the sensing means comprises a proximity switch (such as a magnetically operated read switch) mounted in or on the plug or the socket, which switch closes a circuit when the plug is received in the socket and opens the circuit when the plug is removed,to generate the signal to activate the alarm.
4. Asecuritysystem according to Claim 1 wherein the sensing means comprises auxiliary contacts ofthe plug and the socket, whereby when the plug is received in the socket an electrical circuit is made, and when the plug is removed from the socket the circuit is broken to thus generate a signal to ac tivatethe alarm means.
5. Asecuritysystem according to Claim 4 wherein the auxiliary contact or contacts is or are provided on an extending element carried on the plug orthe socket, which is received in an opening of the socket orthe plug respectively in which the corresponding contact or contacts of the socket or the plug are provided.
6. A security system according to any one of the preceding claims wherein the sensing means is electrically connected to the alarm means when the plug is received in the socket, and disconnected when the plug is removed, whereby the signal generated by the sensing means to activate the alarm means is an open circuit.
7. A security system according to one of the preceding claims wherein the plug is provided at the end of a cable which carries a main conductor connected to the contact ofthe plug which makes the electrical connection within the contact of the socket, one or more conductors connected to the sensing means within the plug being contained with the same cable sheath as the main conductor but being electrically insulated therefrom.
8. Asecuritysystem according to Claim 7 wherein the alarm means is provided in or on an appliance which receives power from the socket through the plug and main conductor.
9. A secu rity system according to Claim 7 wherein the alarm means is separate from an appliance which receives power from the socketthrough the plug and the main conductor, and is connected to a pluralityofsensing means each provided between an individual plug and socket.
10. A security system according to any one Claims 1 to 6 or 9 wherein a conductor is connected to the sensing means within the socket and extends from the socket to the a la rm means.
11. A security system according to Claim 10 wherein the conductor is connected to at least on further sensing means within a further socket
12. Asensing means according to Claim 10Or Claim 11 wherein the alarm means is a permanently installed alarm means within a building.
13. A security system substantially as herein before described with reference to and as shown in the accompanying drawings.
14. A plug for a security system according to any one of Claims 1 to 13 the plug having a switch or an auxiliary contact of the sensing means which coop erates with the socket an auxiliary contact ofthe socket respectively to generate a signal to the alarm meanswhen the plug is removedfrom the socket.
15. A plug substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
16. A socket for a security system according to any one of Claims 1 to 13, the socket having having a switch or an auxiliary contact of the sensing means which cooperates with the plug oran auxiliary contact of the plug respectively to generate a signal to the alarm means when the plug is removed from the socket.
17. A socket substantially as hereinbefore described with reference and as shown in the accompanying drawings.
GB08621251A 1986-02-25 1986-09-03 Security plug alarm system Withdrawn GB2187017A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868604671A GB8604671D0 (en) 1986-02-25 1986-02-25 Security plug

Publications (2)

Publication Number Publication Date
GB8621251D0 GB8621251D0 (en) 1986-10-08
GB2187017A true GB2187017A (en) 1987-08-26

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
GB868604671A Pending GB8604671D0 (en) 1986-02-25 1986-02-25 Security plug
GB08621251A Withdrawn GB2187017A (en) 1986-02-25 1986-09-03 Security plug alarm system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868604671A Pending GB8604671D0 (en) 1986-02-25 1986-02-25 Security plug

Country Status (1)

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GB (2) GB8604671D0 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516476A2 (en) * 1991-05-29 1992-12-02 Se-Kure Controls, Inc. Anti-theft sensor
GB2284698A (en) * 1993-12-08 1995-06-14 John Alan Beynon Handbag/wallet security device
US20120256747A1 (en) * 2011-04-07 2012-10-11 Southern Imperial, Inc. Retractable Merchandise Security Tether with Alarm
US8517748B1 (en) 2012-07-23 2013-08-27 Vanguard Products Group, Inc. Communication connector with analog coupling circuit

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB807170A (en) * 1956-01-09 1959-01-07 Clevite Corp Improvements in or relating to electrical switches
GB1374234A (en) * 1970-11-20 1974-11-20 Olympus Optical Co Electrical attachment devices
US3959790A (en) * 1975-03-14 1976-05-25 Lawrence Peska Associates, Inc. Appliance alarm device
US4009474A (en) * 1976-02-26 1977-02-22 Eller Chauncey B Alarm system for electrical receptacles
US4097843A (en) * 1976-11-12 1978-06-27 Basile Sebastian B Warning device and receptacle adaptor
US4189723A (en) * 1978-02-28 1980-02-19 Hylton Earl A Electrical receptacle provided with an alarm system
US4195290A (en) * 1978-03-24 1980-03-25 Paul Alan Magil & Associates Electrical receptacle for use in alarm system
GB2044970A (en) * 1979-03-20 1980-10-22 Hardman Radio Ltd Anti-theft device
US4300130A (en) * 1979-10-29 1981-11-10 Fotheringham Robert K Anti-theft alarm circuit and compatible warning plugs
US4584570A (en) * 1983-12-12 1986-04-22 Eamon Solan Electrical appliance plug removal alarm

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB807170A (en) * 1956-01-09 1959-01-07 Clevite Corp Improvements in or relating to electrical switches
GB1374234A (en) * 1970-11-20 1974-11-20 Olympus Optical Co Electrical attachment devices
US3959790A (en) * 1975-03-14 1976-05-25 Lawrence Peska Associates, Inc. Appliance alarm device
US4009474A (en) * 1976-02-26 1977-02-22 Eller Chauncey B Alarm system for electrical receptacles
US4097843A (en) * 1976-11-12 1978-06-27 Basile Sebastian B Warning device and receptacle adaptor
US4189723A (en) * 1978-02-28 1980-02-19 Hylton Earl A Electrical receptacle provided with an alarm system
US4195290A (en) * 1978-03-24 1980-03-25 Paul Alan Magil & Associates Electrical receptacle for use in alarm system
GB2044970A (en) * 1979-03-20 1980-10-22 Hardman Radio Ltd Anti-theft device
US4300130A (en) * 1979-10-29 1981-11-10 Fotheringham Robert K Anti-theft alarm circuit and compatible warning plugs
US4584570A (en) * 1983-12-12 1986-04-22 Eamon Solan Electrical appliance plug removal alarm

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516476A2 (en) * 1991-05-29 1992-12-02 Se-Kure Controls, Inc. Anti-theft sensor
EP0516476A3 (en) * 1991-05-29 1993-06-09 Se-Kure Controls, Inc. Anti-theft sensor
GB2284698A (en) * 1993-12-08 1995-06-14 John Alan Beynon Handbag/wallet security device
US20120256747A1 (en) * 2011-04-07 2012-10-11 Southern Imperial, Inc. Retractable Merchandise Security Tether with Alarm
US8604927B2 (en) * 2011-04-07 2013-12-10 Southern Imperial, Inc. Retractable merchandise security tether with alarm
US8517748B1 (en) 2012-07-23 2013-08-27 Vanguard Products Group, Inc. Communication connector with analog coupling circuit

Also Published As

Publication number Publication date
GB8621251D0 (en) 1986-10-08
GB8604671D0 (en) 1986-04-03

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)