Rotationally moulded septic tank sleeves

Details Rotationally moulded septic tank sleeves Rotationally moulded septic tank sleeves

1987-04-15

1988-01-05

Hall, George T.

Receptacles

Closures

Removable closure retained by ductile in situ deformation

220266, B65D 4116, B65D 4118

Patent

active

047170409

ABSTRACT:
A one-piece or sectional access sleeve for septic tanks is rotationally moulded as a single tube with covers formed at one or both ends. These covers are parted-off and trimmed and engage the upper open end of the sleeve in sealed, twist-locking relationship. In the sectional sleeve, portions or sections can be parted off at specific locations along the length thereof and can either receive covers as mentioned above or can be engaged upon the upper end of another section and twist-locked into sealing relationship so that the necessary length of access sleeve is easily assembled for field attachment and access to the tank, from the surface, regardless of the depth of the tank below the ground surface.

REFERENCES:
patent: 3198375 (1965-08-01), Hunter
patent: 3823843 (1974-07-01), Stephens et al.

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