CA1217543A - Burglar alarm apparatus - Google Patents
Burglar alarm apparatusInfo
- Publication number
- CA1217543A CA1217543A CA000416221A CA416221A CA1217543A CA 1217543 A CA1217543 A CA 1217543A CA 000416221 A CA000416221 A CA 000416221A CA 416221 A CA416221 A CA 416221A CA 1217543 A CA1217543 A CA 1217543A
- Authority
- CA
- Canada
- Prior art keywords
- cable
- control device
- terminal
- layer
- change
- 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
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract 3
- 238000001514 detection method Methods 0.000 claims 6
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000004033 plastic Substances 0.000 claims 1
- 229920003023 plastic Polymers 0.000 claims 1
- 229920000136 polysorbate Polymers 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 239000011241 protective layer Substances 0.000 abstract 1
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
- G08B13/1445—Mechanical actuation by lifting or attempted removal of hand-portable articles with detection of interference with a cable tethering an article, e.g. alarm activated by detecting detachment of article, breaking or stretching of cable
- G08B13/1463—Physical arrangements, e.g. housings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/1001—Alarm systems associated with another car fitting or mechanism, e.g. door lock or knob, pedals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R9/00—Supplementary fittings on vehicle exterior for carrying loads, e.g. luggage, sports gear or the like
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/1004—Alarm systems characterised by the type of sensor, e.g. current sensing means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Burglar Alarm Systems (AREA)
Abstract
BURGLAR ALARM APPARATUS
ABSTRACT OF THE DISCLOSURE
A burglar alarm apparatus is provided parti-cularly for use with objects carried externally of a ve-hicle which objects are accessible for unauthorized re-moval. The apparatus comprises an electrically conductive cable extending from a control device mounted preferably in the trunk of the vehicle so as to be inaccessible to unauthorized persons. The control device includes a detector for detecting any change in the electrical con-duction characteristics of the cable which may be caused by a break in the cable or by a short circuit between in-ner and outer elements of the cable. The cable includes a wound spring steel protective layer and carries two jack plugs for connection to the control device. A pulsed signal is issued by the control device to the vehicle horn relay upon any detected change. The control device may also detect unauthorized opening of the vehicle doors by a connection to the internal door switch circuitry.
ABSTRACT OF THE DISCLOSURE
A burglar alarm apparatus is provided parti-cularly for use with objects carried externally of a ve-hicle which objects are accessible for unauthorized re-moval. The apparatus comprises an electrically conductive cable extending from a control device mounted preferably in the trunk of the vehicle so as to be inaccessible to unauthorized persons. The control device includes a detector for detecting any change in the electrical con-duction characteristics of the cable which may be caused by a break in the cable or by a short circuit between in-ner and outer elements of the cable. The cable includes a wound spring steel protective layer and carries two jack plugs for connection to the control device. A pulsed signal is issued by the control device to the vehicle horn relay upon any detected change. The control device may also detect unauthorized opening of the vehicle doors by a connection to the internal door switch circuitry.
Claims
CLAIMS:
(1) Bugler alarm apparatus for detecting the us-authorized removal of an accessible object comprising an elongated electrically conductive cable for looping around the object, a control device, terminal means carried by the control device for detachably electrically connecting the control device to the cable, detection means carried by the control device and electrically connected to the terminal means for detecting a change in the electrical conduction characteristics of the cable and output means carried by the control device for emitting an alarm signal on detec-tion of a change, said cable comprising a first electrical-ly conductive element, a wound spring steel reinforcing layer around the first element, means electrically connect-in said first element and said layer to said terminal means and means for insulating the first element from the layer.
(2) Apparatus according to Claim 1 including an insulating plastics coating surrounding the wound spring steel layer.
(3) Apparatus according to Claim 1 wherein the cable carries a jack plug with a tip connector and a barrel connector, the tip connector being connected to the first element and the barrel connector to the layer.
(4) Apparatus according to Claim 1 wherein the detection means is arranged to detect a break in the electrical conductivity of the cable.
(5) Apparatus according to Claim 1 wherein the detection means is arranged to detect a short circuit be-tween the first element and the layer.
(6) Apparatus according to Claim 1 wherein the output means includes timer means for emitting a pulsed alarm signal.
(7) Apparatus according to Claim 1 wherein the output means includes a latch circuit for maintaining the alarm output after the detected change has reverted.
(8) Apparatus according to Claim 1 wherein the output means includes a driver transistor for connecting the output to ground on detection of a change.
(9) Apparatus according to Claim 1 wherein each end of the cable carries a terminal plug and the terminal plug and the terminal means includes two terminal sockets each for detachable connection to a respective one of the two terminal plugs.
(10) Apparatus according to Claim 9 wherein the control means includes connection means for connecting to-gether the terminal sockets in the absence of the terminal plugs to prevent inadvertent operation of the detection means.
(1) Bugler alarm apparatus for detecting the us-authorized removal of an accessible object comprising an elongated electrically conductive cable for looping around the object, a control device, terminal means carried by the control device for detachably electrically connecting the control device to the cable, detection means carried by the control device and electrically connected to the terminal means for detecting a change in the electrical conduction characteristics of the cable and output means carried by the control device for emitting an alarm signal on detec-tion of a change, said cable comprising a first electrical-ly conductive element, a wound spring steel reinforcing layer around the first element, means electrically connect-in said first element and said layer to said terminal means and means for insulating the first element from the layer.
(2) Apparatus according to Claim 1 including an insulating plastics coating surrounding the wound spring steel layer.
(3) Apparatus according to Claim 1 wherein the cable carries a jack plug with a tip connector and a barrel connector, the tip connector being connected to the first element and the barrel connector to the layer.
(4) Apparatus according to Claim 1 wherein the detection means is arranged to detect a break in the electrical conductivity of the cable.
(5) Apparatus according to Claim 1 wherein the detection means is arranged to detect a short circuit be-tween the first element and the layer.
(6) Apparatus according to Claim 1 wherein the output means includes timer means for emitting a pulsed alarm signal.
(7) Apparatus according to Claim 1 wherein the output means includes a latch circuit for maintaining the alarm output after the detected change has reverted.
(8) Apparatus according to Claim 1 wherein the output means includes a driver transistor for connecting the output to ground on detection of a change.
(9) Apparatus according to Claim 1 wherein each end of the cable carries a terminal plug and the terminal plug and the terminal means includes two terminal sockets each for detachable connection to a respective one of the two terminal plugs.
(10) Apparatus according to Claim 9 wherein the control means includes connection means for connecting to-gether the terminal sockets in the absence of the terminal plugs to prevent inadvertent operation of the detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000416221A CA1217543A (en) | 1982-11-24 | 1982-11-24 | Burglar alarm apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000416221A CA1217543A (en) | 1982-11-24 | 1982-11-24 | Burglar alarm apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1217543A true CA1217543A (en) | 1987-02-03 |
Family
ID=4124011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000416221A Expired CA1217543A (en) | 1982-11-24 | 1982-11-24 | Burglar alarm apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1217543A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2703639A1 (en) * | 1993-04-06 | 1994-10-14 | Boyer Franck | Antitheft device for equipment connected with or close to a vehicle |
| DE102007062252A1 (en) | 2007-12-21 | 2009-06-25 | GM Global Technology Operations, Inc., Detroit | Motor vehicle with carrier system and anti-theft alarm system |
| GB2534237A (en) * | 2015-03-13 | 2016-07-20 | Ford Global Tech Llc | System and method for securing an article to a vehicle |
| WO2018229748A1 (en) * | 2017-06-15 | 2018-12-20 | Tsur Michael Mendel | Cable lock |
-
1982
- 1982-11-24 CA CA000416221A patent/CA1217543A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2703639A1 (en) * | 1993-04-06 | 1994-10-14 | Boyer Franck | Antitheft device for equipment connected with or close to a vehicle |
| DE102007062252A1 (en) | 2007-12-21 | 2009-06-25 | GM Global Technology Operations, Inc., Detroit | Motor vehicle with carrier system and anti-theft alarm system |
| GB2534237A (en) * | 2015-03-13 | 2016-07-20 | Ford Global Tech Llc | System and method for securing an article to a vehicle |
| GB2534237B (en) * | 2015-03-13 | 2019-03-27 | Ford Global Tech Llc | System and method for securing an article to a vehicle |
| WO2018229748A1 (en) * | 2017-06-15 | 2018-12-20 | Tsur Michael Mendel | Cable lock |
| US10633889B2 (en) | 2017-06-15 | 2020-04-28 | Michael Mendel Tsur | Cable lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |