초록 ▼

A sewage tank comprising an outer shell of plywood which includes a platform for supporting a toilet pan. An inner lining of a compressible plastic material lines the interior of the outer shell and defines a hollow interior region of variable volume for a bladder for storing sewage. The inner linin

A sewage tank comprising an outer shell of plywood which includes a platform for supporting a toilet pan. An inner lining of a compressible plastic material lines the interior of the outer shell and defines a hollow interior region of variable volume for a bladder for storing sewage. The inner lining accommodates expansion and contraction of the bladder in the event of freezing and thawing of the contents thereof. The contents of the toilet pan are discharged into the bladder, and sewage is discharged from the bladder under pressure through a discharge pipe.

대표청구항 ▼

A tank comprising: a support housing for supporting a bladder, the housing being of a relatively rigid material and defining a hollow interior region for the bladder, the interior region being of variable volume for accommodating expansion and contraction of the bladder, and the housing having an in

A tank comprising: a support housing for supporting a bladder, the housing being of a relatively rigid material and defining a hollow interior region for the bladder, the interior region being of variable volume for accommodating expansion and contraction of the bladder, and the housing having an inlet to the hollow interior region, and a bladder mounted in the hollow interior region, the bladder having an inlet, communicating with the housing inlet.