Abstract: A through-wall sleeve assembly includes an elongate sleeve having an axial passage, open ends and a radially constrictible frustoconical flange at one of the ends. The sleeve is inserted through a bore in a wall, with the flange at the leading end of the sleeve so that the flange is constricted by the wall or by an outer tube inserted in the bore. The flange returns to an expanded, relaxed condition when it projects beyond a remote surface of the wall and forms a seal with the remote surface when the sleeve is drawn back. An item such as a nozzle, hook or eye having external threads is inserted in the axial passage and fixed relative to the sleeve.

Abstract: Infestation of cockroaches in buildings and houses are treated and effectively eliminated by determining the location of the eggs or the young, immature insects and treating them with a suitable insecticide before the insects emerge and begin to migrate to other areas. The treatment can also be applied to mature roaches in these areas before they lay their eggs. Frequently the places where the young roaches develop or hatch is in the foundations and walls of buildings and under concrete slabs where sewer or water lines occur and other damp or humid areas. A particularly effective insecticide has been found to be a dilute solution of O, O-diethyl-O- (2-isopropyl-6- methyl-4 pyrimidinyl phosphorothioate which is used to saturate the area being treated.

Abstract: A method and apparatus for atomizing and dispersing collected condensate in an air conditioning system to discharge mist-like droplets to the atmosphere. The improvement includes a pump and a nozzle provided as part of the air conditioning system in cooperation with a condensate collector, or as a retrofit for existing installations.