초록 ▼

A portable toilet having a fill cap covering the fill opening for a flush water tank. The cap includes a lid with an air vent opening and a seal member captivated in a cage extending downwardly from the lid into the tank, the cap being removably mounted on a tube for filling the tank with water. An

A portable toilet having a fill cap covering the fill opening for a flush water tank. The cap includes a lid with an air vent opening and a seal member captivated in a cage extending downwardly from the lid into the tank, the cap being removably mounted on a tube for filling the tank with water. An air path from the atmosphere to tank is defined by the lid vent opening and an annulus around the seal. The cage is inserted into the tube and should the water splash in the tube the seal is forced upwardly and against the vent opening to prevent water from escaping.

대표청구항 ▼

In a portable toilet having a storage tank for flush water, a removable cap mounted on the top side of said tank, means forming a vent opening in said cap enabling passage of exterior air to the interior of said tank, a sealing member for sealing said vent opening, and means movably mounting said se

In a portable toilet having a storage tank for flush water, a removable cap mounted on the top side of said tank, means forming a vent opening in said cap enabling passage of exterior air to the interior of said tank, a sealing member for sealing said vent opening, and means movably mounting said sealing member on said cap in communication with the interior of said tank so that water splashing in said tank can move said sealing member into a position closing said vent opening, said means mounting said sealing member comprising cage means extending downwardly from said cap defining a chamber for captivating said sealing member, said sealing member being adapted to move into engagement with said cap at a position closing said vent opening as a result of hydrostatic pressure upon one side of said seal member when said tank is inverted.