Patent ID: 6457437
Filing Date: 2002-10-01
Classification: A01K

Abstract:
In a animal holding system of the type having a rack having a plurality of openings, each opening for receiving at least one drawer for at least one animal, each said drawer having a plurality of walls and a floor defining a holding space for the animal, at least one of said walls having an inlet for receiving air from an inlet plenum of the rack, said drawer having an outlet for routing air from the holding space to an outlet plenum of the rack for connection to an exhaust system, said rack having a plurality of docking stations, each station configured to mate one drawer's inlet to the inlet plenum and one drawer's outlet to the outlet plenum, said system including:a) a constant volume inlet valve for connection to a fresh air source, and providing fresh air from the source to the inlet plenum; and b) a constant volume outlet valve receiving air from the outlet plenum, for connection to a low pressure exhaust duct.