Patent ID: 7748160

Claim:
An appliance for use in treating the gap which exists between the rear side of a brick outer wall and the outer surface of the interior structural wall of a brick walled structure comprising: (a) a first component having a substantially straight elongated tubular structure, said elongated tubular structure having a lumen which extends through the entire length of said first component, said lumen having a size and configuration adapted to receive a separate, removable injection nozzle, said separate injection nozzle being adapted to be removably inserted into said lumen to inject therethrough a chemical substance selected from the group consisting of an insecticide, a termiticide, and a chemical treatment product through said lumen, whereby said chemical substance will pass into said first component from a proximal portion thereof, through said first component, exiting said lumen from a distal portion thereof, said first component being permanently installable in said brick outer wall either during construction or thereafter, the overall length of said first tubular member being substantially the same as the thickness of said brick outer wall; (b) a second component comprising a substantially solid plug having a barrel whose outer diameter is somewhat less than the diameter of said lumen in said first component, whereby said barrel is adapted to slide into said lumen from said proximal portion when said separate injection nozzle is removed from said lumen, the length of said barrel being no less than the length of said lumen, whereby said barrel can completely fill said lumen, said second component further comprising means for preventing said second component from sliding totally within said lumen, said means for preventing also providing a means for withdrawing said plug from said lumen, said plug being removed from said lumen when said appliance is used to inject chemical within said gap and said plug being reinserted into said lumen only when said separate injection nozzle has been removed from said lumen; and (c) means for affixing said first component in a brick wall of a structure of the type having an outer brick wall and an inner structural wall with a gap therebetween, the length of said first component being at least as long as the thickness of said outer brick wall, whereby said appliance is adapted to allow the injection of said chemical substance into said gap upon removal of said plug, whereby said second component is wholly removed and separated from said lumen during treatment when said chemical substance is injected into said proximal end of said lumen, whereby said chemical substance will pass through said lumen, exiting said lumen from said distal end whereby said chemical substance will pass through said brick outer wall and be injected into said gap between said brick outer wall and said inner structural wall, and whereby said second component is replaced in said lumen following treatment.