초록 ▼

A flexible closure, for use in an alarm system is provided in which a conductive sensing element is interlaced with fiber matrix material to provide a network over at least part of the closure. The interlacing is preferably by means of knitting a conductive wire together with a yarn which forms the

A flexible closure, for use in an alarm system is provided in which a conductive sensing element is interlaced with fiber matrix material to provide a network over at least part of the closure. The interlacing is preferably by means of knitting a conductive wire together with a yarn which forms the matrix of the closure. The closure may further include a protective outer layer on one or both faces of the closure.

대표청구항 ▼

An alarm system for deterring unauthorized access to an area, comprising: a matrix of fibre material interlaced with a conductive sensing element forming a closure for said area, the conductive sensing element being knitted or crocheted integrally with the fibre material of the matrix; the interlace

An alarm system for deterring unauthorized access to an area, comprising: a matrix of fibre material interlaced with a conductive sensing element forming a closure for said area, the conductive sensing element being knitted or crocheted integrally with the fibre material of the matrix; the interlaced conductive sensing element providing a network over at least part of the closure; and alarm means connected in a circuit with said sensing element for providing an alarm in response to disturbance of the closure by disturbance of the conductive sensing element in the circuit.