Patent ID: 7910056
Filing Date: 2011-03-22
Classification: A01M,F16L,Y10T

Abstract:
1. A method of installing a fumigant gas port in a fumigation chamber which at least in part incorporates a flexible canopy, the gas port adapted to be seated on an underlying structure and arranged to be positioned between the canopy and the underlying structure, and where the gas port comprises: a barrier having an enlarged central portion such that the barrier reduces in height moving from the central portion to at least one of opposite edge portions; at least one of a fumigant gas inlet or outlet disposed in the barrier, the inlet to allow a flow of a fumigant into the fumigation chamber and the outlet to allow the removal of a flow of fumigant from the fumigation chamber; and a sealing surface extending along an outer periphery of the barrier between said opposite edge portions, the sealing surface adapted to be contactable with the flexible canopy to provide a gas-tight seal between said apparatus and said canopy wherein the method comprises the steps of: disposing the gas port between the flexible canopy and the underlying structure; and retaining a lower edge margin of the flexible canopy in contact with the sealing surface of the gas port to form a gas tight-seal therebetween.