EP0308737A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Intrusion-warning wire fence
Assignee: CI KA RA SpA
•
Filing: 1988-09-09
•
Granted: —
•
Expires: 2008-09-09
Abstract
Abstract This invention relates to an intrusion-warning wire fence formed, at least partly, by a plurality of barrier or fence wires (1), substantially parallel to each other and stretched taut between two supports, for example two poles (2). The distance between two adjacent barrier wires (1) is smaller than that which is required for permitting a person to pass therethrough. The invention provides one or more sensor wires (9) each comprising at least one optical conductor (10) connected to a warning and/or alarm system which is activated when said optical conductor (10) is either broken or compressed. Said sensor wires (9) are associated with at least part of said barrier wires (1) and with at least one back-pressure edge (8, 13) so as to be compressed against said back-pressure edge (8, 13) as a result of an increase in the tension of the associated barrier wire (1) above the initial tension of installation, and to such an extent as to activate the warning and/or alarm system. Therefore, this system is activated when two adjacent barrier wires (1) are spread appart so as to form an opening for the passage of a person.
Inventors
- 👤 Federico Ciordinik
- 👤 Michele Bellettati
- 👤 Tiziano Rosignoli
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:52
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/12; G08B13/122; G08B13/124
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
153 words
An intrusion-warning wire fence constituted at least partly by a plurality of barrier or fence wires (1) substantially parallel to each other and stretched taut between two supports, while the distance between two adjacent barrier wires (1) is smaller than that required for permitting a person to pass therethrough, characterized in that one ore more sensor wires (9) each comprising at least one optical conductor (optical fibre 10) and connected to a warning and/or alarm system which can be activated upon rupture or compression of the optical conductor (10), are associated with at least a part of the barrier wires (1) and with at least one back-pressure edge (8, 13) so as to be compressed against said back-pressure edge as a result of an increase in the tension of the associated barrier wire (1) above its initial tension of installation, and to such an extent as to activate the warning and/or alarm system.
Claim 2
Dependent Claim
153 words
An intrusion-warning wire fence constituted at least partly by a plurality of barrier or fence wires (1) substantially parallel to each other and stretched taut between two supports, while the distance between two adjacent barrier wires (1) is smaller than that required for permitting a person to pass therethrough, characterized in that one ore more sensor wires (9) each comprising at least one optical conductor (optical fibre 10) and connected to a warning and/or alarm system which can be activated upon rupture or compression of the optical conductor (10), are associated with at least a part of the barrier wires (1) and with at least one back-pressure edge (8, 13) so as to be compressed against said back-pressure edge as a result of an increase in the tension of the associated barrier wire (1) above its initial tension of installation, and to such an extent as to activate the warning and/or alarm system.
Claim 3
Dependent Claim
109 words
A fence according to Claim 1, characterized in that the sensor wires (9) are separate from the barrier wires (1) and are passed between a stationary back-pressure edge (8, 13) and a movable pressure member (5, 5′) co-operating with said back-pressure member (8, 13) and connected either directly or indirectly to an associated barrier wire (1), so as to be urged toward the back-pressure edge (8, 13) and as to cause the compression of the sensor wire (9) between the back-pressure edge (8, 13) and said pressure member (5, 5′) in case of an increase in the tension of the barrier wire (1) above its initial tension of installation.
Claim 4
Dependent Claim
36 words
A fence according to Claim 2, characterized in that the pressure member (5) is secured preferably directly to the associated barrier wire (1) and is slidably guided in the 1ongitudinal direction of said barrier wire (1).
Claim 5
Dependent Claim
41 words
A fence according to Claim 2, characterized in that the pressure member (5′) is secured preferably directly to the associated barrier wire (1) and is mounted as to be pivotable about a pivot (12) disposed transversely to said barrier wire (1).
Claim 6
Dependent Claim
128 words
A fence according to Claims 2 to 4, characterized in that each pressure member (5, 5′) has at least at one of its side ends a fork-like configuration and an end groove extending in the same plane as the fork-like member and normally to the arms thereof, said end groove of the pressure member (5, 5′) having engaged therein a back-pressure and guide edge or flange (8) which is transversal and normal to the associated barrier wire (1), while the sensor wire (9) extends substantially parallel to the back-pressure and guide edge (8) and is led from one side to the other of the pressure member (5, 5′) by beibg passed through the fork-like formation between the back-pressure and guide edge (8) and the bottom af said fork.
Claim 7
Dependent Claim
46 words
A fence according to Claims 2 to 4, characterized in that the sensor wire (9) is passed between a pressure edge (14) provided on the pressure member (5, 5′) and a back-pressure edge (13), both of these edges being disposed transversely to said sensor wire (9).
Claim 8
Dependent Claim
67 words
A fence according to any one or more of the preceding Claims, characterized in that the sensor wire or wires (9) and the back-pressure edge or edges (8, 13) and the movable pressure members (5, 5′) are provided only at one or at both ends of the stretched barrier wires (1) and/or at one or more intermediate spots, preferably within hollow supports (poles 2) or the like.
Claim 9
Dependent Claim
55 words
A fence according to Claim 7, characterized in that at the intermediate spots of the barrier wires (1), the members (5, 5′) co-operate at both sides with a back-pressure edge (8, 13), while at each side a sensor wire (9) is passed between the respective back-pressure edge (8, 13) and the pressure member (5, 5′).
Claim 10
Dependent Claim
49 words
A fence according to any one or more of the preceding Claims, characterized in that the barrier wires (1) comprise one or more optical or electrical conductors (11) connected to a warning and/or alarm system which can be activated upon rupture or compression of said conductor or conductors (11).
Claim 11
Dependent Claim
67 words
A fence according to Claim 1, characterized in that the sensor wires are coupled with at least some of the barrier wires (1) and are formed by one or more optical conductors (11) either incorporated in the barrier wires (1) or provided on the outside thereof and stretched together with them, while the barrier wires are installed together with the respective sensor wires, on stationary back-pressure edges.
Claim 12
Dependent Claim
62 words
A fence according to Claim 10, characterized in that the barrier wires (1) and the optical conductors (11) associated therewith are passed through holes in the hollow supports (poles 2) and follow within said supports such a path that they are compressed against said hole edges acting as back-pressure edges, by the action of the tractive force exerted on the barrier wires.
Claim 13
Dependent Claim
106 words
A fence comprising barrier or fence wires (11) extending between and through hollow poles (2) particularly according to any one or more of the preceding Claims, characterized in that each pole (2) is closed at its top by a cap-like cover (15) which rests by means of a depending extension (16) thereof, preferably within said pole (2), on a least one sensor wire (1) which may be formed as well by a barrier wire and is associated with an optical or electrical conductor (11), connected to a warning and/or alarm system which can be activated in response to the rupture or compression of said conductor (11).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.