Toilet bowl ventilation

Claim 2

A toilet seat conventionally pivotable between a raised and a lowered position which includes a closed annular hollow tubular seal on its underside and a conventional seat opening, the seal encircling said seat opening and being engageable sealingly with the rim of a toilet bowl when the seat is in lowered position ready for use; an air extraction conduit at the rear of the seat and at least one air extraction opening located in a relatively short projecting duct portion of said seal at the rear inner periphery of the seat opening, the extraction opening and duct portion being disposed inwardly of the seal and being so positioned that they are directed in a downward direction when the seat is in raised position, the extraction conduit having an outlet connection connectable to air extractor means.

Claim 3

A lavatory seat as claimed in claim 1, in which the seal and extraction conduit are integral with each other.

Claim 4

A lavatory seat as claimed in claim 1, in which the extraction conduit is of a nonabsorbent material resistant to urine.

Claim 5

A combination seal and air extraction conduit attachable to the underside of a toilet seat conventionally pivotable from a raised to a lowered position and engaging sealingly with the entire rim of a toilet bowl when the seat is in lowered position ready for use, the rear portion of the seal being of hollow tubular construction forming a conduit when secured to the toilet seat, and having an outlet connection connectable to extractor means, and having at least one air inlet opening located in a relatively short projecting duct portion of said seal along the inner periphery of the hollow rear portion, the said inlet opening and duct portion being so disposed that they are directed in a downward direction when the seat is in its raised position, and when the combination seal and air extractor conduit is secured to the underside of said toilet seat.

Claim 6

A combination seal and air extraction conduit attachable to the underside of a toilet seat conventionally pivotable from a raised to a lowered position and engaging sealingly with the entire rim of a toilet bowl when the seat is in lowered position ready for use, the rear portion of the seal being of hollow tubular construction forming a conduit when secured to the toilet seat, and having an outlet connection connectable to extractor means, and having at least one air inlet opening located in a relatively short projecting duct portion of said seal along the inner periphery of the hollow rear portion, the said inlet opening and duct portion being so disposed that they are directed in a downward direction when the seat is in its raised position, and when the combination seal and air extractor conduit is secured to the underside of said toilet seat.