초록 ▼

A vacuum sewage handling assembly particularly for boats and recreational vehicles or caravans has a minimum of components because the conventional vacuum and holding tanks have been combined into a single substantially unreinforced, non-cylindrical, all plastic tank. The tank has a contoured, convo

A vacuum sewage handling assembly particularly for boats and recreational vehicles or caravans has a minimum of components because the conventional vacuum and holding tanks have been combined into a single substantially unreinforced, non-cylindrical, all plastic tank. The tank has a contoured, convoluted, discontinuous surface (e.g. formed by grooves, channels, and other discontinuities) so that it has no continuous flat surface area of more than about 80 square inches. The combined vacuum and holding tank may mount a vacuum pump, and optionally mounts a sewage discharge pump. The tank preferably has a generally parallelepiped configuration, and an interior volume of between about 45-65 liters, has a maximum vacuum level of about 26 cm of mercury, and is connected to other conventional portions of a vehicle toilet system, including outlets penetrating the exterior of the vehicle. The tank may have wheels and a handle.

대표청구항 ▼

[ What is claimed is:] [1.] A combined vacuum and holding tank assembly comprising:a substantially hollow all plastic, with substantially no elongated fibers incorporated into the plastic, tank having first and second ends, first and second generally planar sides, first and second outlets, an inlet,

[ What is claimed is:] [1.] A combined vacuum and holding tank assembly comprising:a substantially hollow all plastic, with substantially no elongated fibers incorporated into the plastic, tank having first and second ends, first and second generally planar sides, first and second outlets, an inlet, an upper surface, and a bottom, said tank having a contoured, convoluted, discontinuous surface so that the tank has no continuous flat surface area of more than 80 square inches;a vacuum pump mounted exteriorly of said tank;a gas inlet tube disposed within said tank and connected to said second outlet; anda connection between said vacuum pump and said second outlet exterior of said tank.