Liquid flow drainage control

Details Liquid flow drainage control Liquid flow drainage control

1987-02-20

1988-07-12

Hruskoci, Peter

Liquid purification or separation

Structural installation

Geographic

2105322, 138 45, 137577, 285178, E03F 1100

Patent

active

047568275

ABSTRACT:
Improvements are disclosed for liquid flow drainage control in gravity type systems such as sewage septic tank systems. A plastic cap which is insertable into the ends of the drainage pipes that project into a distribution box is formed with an end face and a cylindrical body. The end face is generally circular having a larger diameter than the outer diameter of the drainage pipes into which the cap is to be inserted. The outer periphery of the end face is provided with an interdigital or scalloped pattern to facilitate easy gripping even in the most adverse conditions. The end face is further provided with an eccentric discharge hole which is located along a diameter of the end face so that the hole is always some distance from the interior surface of the cylindrical body so that the hole forms a weir to the inlet of the drainage pipe into which the end cap is inserted. The eccentric hole is provided with an outwardly projecting flange which, in cooperation with a spirit level, is used for rough leveling. The cylindrical body is made of a pliant material allowing it to conform to the irregular internal diameter of a plastic drainage pipe. The projecting end of the cylindrical body is provided with a radially extending sealing flange which also conforms to the internal diameter of the plastic drainage pipe.

REFERENCES:
patent: 3394951 (1968-07-01), Crivello
patent: 3904524 (1975-09-01), Pelton et al.
patent: 4112979 (1978-09-01), Niddicombe
patent: 4298470 (1981-11-01), Stallings
patent: 4645177 (1987-02-01), Moakes
patent: 4663036 (1987-05-01), Strobl, Jr. et al.

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