Security system
First Claim
1. A composite wall panel comprising at least two fibre optic elements rigidly contained within a symmetrical block of material having a regular polygonal panel face comprising parallel edges, bisectors of said edges defining axes of symmetry of said face and fibre optic elements arranged within portions emerging from said blocks at spaced locations whose relative positions are such that when a plurality of said blocks are assembled together to form a security wall or housing having a number of transmission lines comprising said fibre optic elements within the wall or housing, said blocks cannot be moved relative to one another by translatory movement, rotation or tilting so as to provide access through the security wall or housing without also causing translatory movement of at least one emergent portion of one of said fibre optic elements wherein the improvement lies in that each end of one fibre optic element emerges from said block at a respective one of a first pair of spaced locations and each end of a second fibre optic element emerges from said block at a respective one of a second pair of spaced locations, the relative arrangement of the spaced locations being such that there are at least three spaced locations arranged symmetrically about at least one of said axes of symmetry of said panel face and the construction of said block being such that an unlimited number of said blocks can be assembled in juxtaposition to form a wall or housing and any relative movement between said blocks when assembled results in a translatory movement of the emergent portion of at least one of said fibre optic elements ensuring interruption of a transmission line in that wall or housing.
2 Assignments
0 Petitions
Accused Products
Abstract
A composite security panel having at least two fibre optic elements contained within a block of material, the elements being arranged with portions emerging from the panel at three or more spaced locations. Translatory movement, rotation or tilting of the panel when assembled in a wall or housing causing translatory movement of an emergent portion of an element resulting in the interruption of a transmission line through the wall of housing. The elements may be firmly embedded within the panel, the fibre optic being carried on a strip of mateial, or the elements may be formed into a mesh which can be loosely housed between interconnectable sections of the panels.
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Citations
18 Claims
- 1. A composite wall panel comprising at least two fibre optic elements rigidly contained within a symmetrical block of material having a regular polygonal panel face comprising parallel edges, bisectors of said edges defining axes of symmetry of said face and fibre optic elements arranged within portions emerging from said blocks at spaced locations whose relative positions are such that when a plurality of said blocks are assembled together to form a security wall or housing having a number of transmission lines comprising said fibre optic elements within the wall or housing, said blocks cannot be moved relative to one another by translatory movement, rotation or tilting so as to provide access through the security wall or housing without also causing translatory movement of at least one emergent portion of one of said fibre optic elements wherein the improvement lies in that each end of one fibre optic element emerges from said block at a respective one of a first pair of spaced locations and each end of a second fibre optic element emerges from said block at a respective one of a second pair of spaced locations, the relative arrangement of the spaced locations being such that there are at least three spaced locations arranged symmetrically about at least one of said axes of symmetry of said panel face and the construction of said block being such that an unlimited number of said blocks can be assembled in juxtaposition to form a wall or housing and any relative movement between said blocks when assembled results in a translatory movement of the emergent portion of at least one of said fibre optic elements ensuring interruption of a transmission line in that wall or housing.
Specification