Water closet

A water closet in which a flushing tank is formed integrally with a bowl portion of a water closet body, and a feed chamber which feeds water from said flushing tank to said bowl portion, said feed chamber interconnecting with said flushing tank substantially intermediately heightwise of said flushing tank, wherein at least a portion of said tank extends below an upper portion of said bowl portion, said water closet comprising a trap drainage formed continuously with said bowl portion and having a drain hole formed in a rear wall of said closet body substantially intermediate of a lower end of said flushing tank and a bottom surface of said closet body which is adapted to be supported by a floor surface, said drain hole of said trap drainage and said rear wall of said closet body being positioned substantially flush with a rear surface of said flushing tank, and said trap drainage further comprising a first rearwardly extending portion starting at a bottom of said bowl portion and extending rearwardly and upwardly from said bowl portion, a second portion connected to and extending substantially vertically downwardly from said first portion and extending into a third portion, said third portion connected to said second portion and comprising a sump portion at an end of said third portion connected to said second portion, said drain hole provided at an end of said third portion remote from said bowl portion of said water closet, wherein said second portion has a diameter that narrows from a first end adjacent said first portion towards a second end adjacent said third portion, and further comprising a partitioning wall on an upper wall above said sump portion;

• wherein said partitioning wall creates a slight vent space between said upper wall and a water surface of said sump portion;
• said partition wall being provided with an air admitting notch at a lower portion thereof, said trap drainage having first and second water seals provided at the juncture of said first and second portion of said trap drainage and at said partitioning wall, said drainage hole from said third portion of said trap drainage having a generally continuous periphery.

A water closet comprising:

• a bowl portion having a horizontal rim surface and a water exit opening at a lower portion of said bowl portion;
• a trap drainage;
• and
• a drain hole formed in said water closet,
• wherein said trap drainage comprises:
• an upper portion extending from said water exit opening;
• a sump portion connecting to said drain hole;
• an intermediate portion interconnecting said upper portion and said sump portion, said intermediate portion including a weir portion connected to said upper portion at an entrance of said intermediate portion, said intermediate portion extending downwardly substantially perpendicular to said rim surface;
• and
• a partitioning wall extending downwardly from an upper wall of said sump portion and terminating at an end above a static water level in said sump portion, said partitioning wall creating a slight vent space between said partitioning wall end and said static water level across the entire width of said sump portion prior to initiation of a flush cycle.