Drainage device

Details Drainage device Drainage device

1982-09-30

1984-12-25

Hruskoci, Peter

Hydraulic and earth engineering

Drainage or irrigation

Porous or apertured pipe, flume, or tileway

210170, 210459, 405 49, E02B 1100

Patent

active

044900724

ABSTRACT:
The drainage device includes a stiff plastic core having rigid raised portions and valleys therebetween is oriented vertically and tangentially to a drain pipe which has axially spaced raised annular portions contacting the core and annular recesses with slots to provide passageways for ground water into the pipe. A permeable plastic membrane is warpped around the core and the pipe to prevent fill from filling the passageways so defined.

REFERENCES:
patent: 3441140 (1969-04-01), Thuklser
patent: 3563038 (1971-02-01), Healy et al.
patent: 3566607 (1971-03-01), Sixt
patent: 3654765 (1972-04-01), Healy et al.

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