Security device kit, a security device and a security installation

A security device, which comprises

• a pair of spaced hollow box section elongate primary security members extending generally in a first direction, each having a plurality of longitudinally spaced openings in a first side thereof and including a cover plate which forms at least part of one of the sides of the box section;
• a plurality of elongate secondary security members extending generally in a second direction which is orthogonal to the first direction, the secondary security members each having ends located in said openings of the primary security members so that said ends are thereby held captive in the primary security members, the secondary security members thus spanning a space between the primary security members and being spaced apart from one another;
• and
• a tertiary security member having openings spaced longitudinally along it the same distance apart as the openings of the primary security members, with the openings of said tertiary security member accommodating the secondary security members and the tertiary security member thus supporting the secondary security members between the primary security members.

A security installation, which comprises

• a security device comprising a pair of spaced hollow elongate primary security members extending generally in a first direction, each having a plurality of longitudinally spaced openings in a first side thereof;
• and a plurality of elongate secondary security members extending generally in a second direction which is orthogonal to the first direction, the secondary security members having ends located in said openings of the primary security members so that said ends are thereby held captive in the primary security members, the secondary security members thus spanning a space between the primary security members and being spaced apart from one another, each secondary security member comprising an outer elongate component which is hollow, an inner elongate component extending along an inside of the outer component and spaced therefrom, with the inner and outer elongate components being electrically conductive and electrically connected or connectable to an electrical current such that a potential difference can be provided between them and insulators electrically insulating the inner from the outer elongate components;
• and
• an electrically operable burglar protection system operatively connected to the security device, the burglar protection system including an alarm, the inner elongate components being at a low electrical potential and the outer elongate components being at neutral voltage so that the security device is harmless under normal conditions, the inner elongate components being protected by the outer elongate components from outside interference so as to eliminate false alarms, and means for generating an alarm upon electrical bridging of the inner and outer elongate components.

A security installation, which comprises

• a security device comprising a pair of spaced hollow elongate primary security members extending generally in a first direction, each having a plurality of longitudinally spaced openings in a first side thereof;
• and a plurality of elongate secondary security members extending generally in a second direction which is orthogonal to the first direction, the secondary security members having ends located in said openings of the primary security members so that said ends are thereby held captive in the primary security members, the secondary security members thus spanning a space between the primary security members and being spaced apart from one another, each secondary security member comprising an outer elongate component which is hollow, an inner elongate component extending along an inside of the outer elongate component and spaced therefrom, the inner and outer elongate components being electrically conductive and electrically connected or connectable to an electrical current such that a potential difference can be provided between them, and insulators electrically insulating the inner from the outer elongate components, and the inner and outer elongate components of the secondary security members being at different electrical potential;
• and
• an electrically operable burglar protection system operatively connected to the security device, the burglar protection system including an alarm, and being such that the outer elongate components of the secondary members are energized through the introduction of positive and negative electrical potential to alternative secondary members, thus resulting in potential differences between adjacent ones of the secondary security members.

A security installation which comprises

• a security device comprising a pair of spaced hollow elongate primary security members extending generally in a first direction, each having a plurality of longitudinally spaced openings in a first side thereof;
• and a plurality of elongate secondary security members extending generally in a second direction which is orthogonal to the first direction, the secondary security members having ends located in said openings of the primary security members so that said ends are thereby held captive in the primary security members, the secondary security members thus spanning a space between the primary security members and being spaced apart from one another, each secondary security member comprising an outer elongate component which is hollow, an inner elongate component extending along an inside of the outer elongate component and spaced therefrom, the inner and outer elongate components being electrically conductive and electrically connected or connectable to an electrical current such that a potential difference can be provided between them, and insulators electrically insulating the inner from the outer elongate components, each insulator comprising an elongate body protruding into the end of the outer elongate component, a peripheral flange protruding outwardly from the body at one end thereof and abutting against the end of an adjacent one of the secondary security members, and a passageway or recess in the body accommodating the inner elongate component;
• and
• an electrically operable burglar protection system operatively connected to the security device.