Receptacles – Outlet or junction box type – Sectional receptacle
Patent
1979-02-14
1981-03-10
Pollard, Steven M.
Receptacles
Outlet or junction box type
Sectional receptacle
220 5A, 220 83, B65D 638
Patent
active
042548853
ABSTRACT:
A thin-walled, one-piece plastic tank for subterranean storage and transmission of sewage or other materials. The tank comprises a bottom wall, an arched top wall and opposed end walls. The top wall is substantially semi-circular in cross-section with a plurality of corrugations therearound. Along the apex area of the arch is a pair of manhole-like openings with an arced strengthening rib therebetween. The bottom wall is generally arced in cross-section with a radius very large compared to the radius of the cross-section of the top wall which causes the bottom wall to be generally flat. The end walls are arced in the longitudinal, cross-sectional and horizontal planes. The end walls each have a plurality of corrugations. In the root of one of the corrugations is a depression which contains a horizontal aperture for the egress or ingress of fluid materials. The bottom wall has a plurality of corrugations mating with the top wall corrugations such that the corrugations circumscribe the tank. Further, the bottom wall has a pair of regions one adjacent each end wall which contain a plurality of triangular indentations in a truss-like configuration.
REFERENCES:
patent: 951556 (1910-03-01), Bossingham
patent: 2963191 (1960-12-01), Setzekorn et al.
patent: 3583623 (1971-06-01), Golner et al.
Wedco, La Fosse Septique en Polyethylene.
Wedco, Septic Tank, 1-750.0.
Fiber Erectors, The Modern, Lightweight Sewage System.
Soltralco, Ensembles d'Assainissement Eparation.
HBA Cast Products Co., Check The Advantages of HBA's Fiberglass Septic Tanks.
Fouss James L.
Lytle Donald A.
Parker John J.
Hancor, Inc.
Pollard Steven M.
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