CH612786A5 - Composite wire for fencing - Google Patents
Composite wire for fencingInfo
- Publication number
- CH612786A5 CH612786A5 CH656377A CH656377A CH612786A5 CH 612786 A5 CH612786 A5 CH 612786A5 CH 656377 A CH656377 A CH 656377A CH 656377 A CH656377 A CH 656377A CH 612786 A5 CH612786 A5 CH 612786A5
- Authority
- CH
- Switzerland
- Prior art keywords
- wire
- fencing
- conductors
- composite wire
- bridge
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/10—Contact cables, i.e. having conductors which may be brought into contact by distortion of the cable
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Fencing (AREA)
Abstract
The wire comprises a central conductor (1) jacketed by a thin insulating sheath (2) and surrounded by conductors (3). The conductor (1) and one of the conductors (3) are connected to a resistance bridge, the diagonal of which is connected to an amplifier controlling an acoustic alarm. Any pressure on the wire (wire-cutter, weight of a person trying to scale the fence, etc.) moves the wire (3) closer to the wire (1) and causes the contact resistance between these two wires or the capacitance to vary, which destroys the balance of the bridge and triggers the acoustic alarm. <IMAGE>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7605870 | 1976-05-31 | ||
NL7610670A NL7610670A (en) | 1976-09-24 | 1976-09-24 | Composite fencing wire for security fence - has strands separated by thin insulating layer altering capacity between them under pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
CH612786A5 true CH612786A5 (en) | 1979-08-15 |
Family
ID=26645222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH656377A CH612786A5 (en) | 1976-05-31 | 1977-05-27 | Composite wire for fencing |
Country Status (7)
Country | Link |
---|---|
CH (1) | CH612786A5 (en) |
DE (1) | DE2720252A1 (en) |
DK (1) | DK226377A (en) |
FR (1) | FR2353695A1 (en) |
GB (1) | GB1585602A (en) |
IE (1) | IE45206B1 (en) |
LU (1) | LU77445A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2413729A1 (en) * | 1978-01-02 | 1979-07-27 | Metafix Sa | Electronic monitoring system for security arrangements - compares measured quantity with standard value and allows for temp. variation |
DE3723903A1 (en) * | 1987-07-18 | 1989-01-26 | Bernhard Haverkamp | MESH WIRE FOR ELECTRICALLY MONITORED FENCES |
FR2803174B1 (en) * | 2000-01-04 | 2004-09-17 | Jean Michel Bellon | ELECTRICAL FENCE |
ES2376453B1 (en) * | 2010-02-25 | 2013-01-29 | Micromag 2000 S.L. | CAPACITIVE SENSOR SYSTEM FOR PERIMETER PROTECTION DEVICES. |
WO2014170813A1 (en) * | 2013-04-15 | 2014-10-23 | Kemp Marius | Fence monitoring |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2134800A (en) * | 1934-03-21 | 1938-11-01 | Warren C Putnam | Treadle switch |
FR1137146A (en) * | 1955-11-30 | 1957-05-23 | Comp Generale Electricite | Deformable electric cable for remote control |
NL278995A (en) * | 1961-06-05 | |||
US3223796A (en) * | 1962-07-23 | 1965-12-14 | Willoughby Mfg Company | Insulated electric fence wire structure |
DE1959229C3 (en) * | 1968-07-19 | 1978-12-21 | Israel Aircraft Industries, Ltd., Lod Airport (Israel) | Electrical switch actuated by sudden movement of an outer member and comprising a flowable material |
GB1406486A (en) * | 1972-02-04 | 1975-09-17 | Rists Wires & Cables Ltd | Electrical switches |
NL176505C (en) * | 1974-06-27 | 1985-04-16 | Philips Nv | THIN, SMOOTH ELECTRICAL CONNECTION WIRE AND METHOD FOR MANUFACTURING SUCH WIRE. |
-
1977
- 1977-05-05 DE DE19772720252 patent/DE2720252A1/en not_active Withdrawn
- 1977-05-17 FR FR7715080A patent/FR2353695A1/en active Granted
- 1977-05-23 GB GB2167277A patent/GB1585602A/en not_active Expired
- 1977-05-24 DK DK226377A patent/DK226377A/en not_active Application Discontinuation
- 1977-05-27 LU LU77445A patent/LU77445A1/xx unknown
- 1977-05-27 CH CH656377A patent/CH612786A5/en not_active IP Right Cessation
- 1977-05-30 IE IE110577A patent/IE45206B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB1585602A (en) | 1981-03-11 |
FR2353695A1 (en) | 1977-12-30 |
IE45206B1 (en) | 1982-07-14 |
IE45206L (en) | 1977-11-30 |
DK226377A (en) | 1977-12-01 |
DE2720252A1 (en) | 1977-12-22 |
FR2353695B1 (en) | 1982-08-13 |
LU77445A1 (en) | 1977-09-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |