Patent ID: 8646117

Claim:
In a wastewater cartridge, couplable to an external drain, having an upper wall ( 60 ), an opening ( 64 ) therein for receipt of wastewater, an inlet compartment ( 78 ) which is generally located under the opening for receipt of the wastewater from the opening and which has an outer periphery as defined by a peripheral wall, and a sealant which is contained in the inlet compartment, which is floatable on the wastewater therein and which is disposed to act as a barrier to external drain and other odors, and an outlet compartment communicating with the inlet compartment and the external drain, the improvement comprising: a ceiling ( 90 ) having a surface of given area bounding the inlet compartment ( 78 ), which said ceiling is spaced from the upper wall ( 60 ) and from the wastewater-receiving opening ( 64 ); a separator ( 76 ) extending from the upper wall separating the inlet compartment from the outlet compartment; and a throat ( 88 ) communicating the inlet compartment with the wastewater-receiving opening, said throat having an area which is less than the area of said ceiling and which has a lower end, whereby the amount of the sealant acting as the barrier, as contained by said throat, is less than any further amount of the sealant under said ceiling which floats on the wastewater in said inlet compartment, and whereby said ceiling surface extends outwardly and downwardly from said lower end of said throat to the outer periphery of said inlet compartment as defined by said peripheral wall and said separator ( FIGS. 11 & 11A ) for enabling the sealant to flow to said throat.