Patent ID: 7137156

Claim:
A portable lavatory, comprising: a lavatory facility unit having sidewalls and a lower end which define an interior chamber, said interior chamber equipped therein with a toilet and a washbowl, said lavatory facility unit having a door on a sidewall of said sidewalls thereof; and a tank unit integrated with the lower end of the lavatory facility unit and protruded downwardly therefrom to constitute a lower part of the portable lavatory, the tank unit being constructed such that widths and lengths thereof are shorter than those of the lavatory facility unit by predetermined distances, thus providing a step around the lower end of the lavatory facility unit and defining a space around an outer surface of the tank unit the tank unit comprising: a fresh water tank and a foul water tank each comprising a tank body which is opened at an end thereof and is tapered at the open end thereof to define a tapered part, with a flange provided around the open end of the tapered part, the fresh water tank and the foul water tank being fastened to each other at the flanges thereof facing each other, thus being integrated into a single structure while achieving a predetermined sealing effect at a junction part between the flanges; and a variable tank provided in the junction part between the flanges such that the variable tank is interposed between the flanges to provide the predetermined sealing effect at the junction part.