Receptacles – Container attachment or adjunct – Expanding or contracting portion or component
Patent
1991-04-05
1993-02-16
Moy, Joseph M.
Receptacles
Container attachment or adjunct
Expanding or contracting portion or component
220723, 220905, B65D 612, B65D 640
Patent
active
051863545
ABSTRACT:
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.
REFERENCES:
patent: 3791164 (1974-02-01), Laverman
patent: 4763805 (1988-08-01), Strock
Coffey Manus
McGarry Michael G.
Harouniya Limited
Moy Joseph M.
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