Inventors:
William E. Alkire - Scottsdale AZ
David B. Benz - Paradise Valley AZ
International Classification:
A01K 2900
Abstract:
An exhaust filter system, in an animal habitation structure, for example, for cats, may be retrofit to a roof with a ventilation hole. The filter system has a housing provided with an inlet and an outlet, an electric fan mounted to move a current of air from the inlet through a filter, received in a slot provided in the housing. The filter is made of any suitable material, but is preferably activated charcoal. An important feature of the invention is the moldable membrane for connecting the inlet to the filter housing to the aperture in the roof, which is a moldable, flexible rubber or other plastic membrane, preferably polyurethane rubber, affixed to the inlet borders of the exhaust system and laid upon the roof, capable of conforming to the surface contour of almost any roof and covering, but not affixed to, the ventilation hole in the roof, to form a substantially air-tight seal with the roof. There may be also a sensor connected to the electric fan for detecting the presence of an animal in the litter box, to activate the electric fan when an animal is present in the litter box and deactivate the fan when the animal leaves the litter box. An additional object and feature of the invention is that exact registration of the moldable membrane for communication between the filter system and the ventilation hole in the roof is not required.
