Drainage cell

Details Drainage cell Drainage cell

1987-04-08

1991-07-09

Spear, Frank

Liquid purification or separation

Structural installation

Geographic

210293, 405 43, 405 45, E02B 1100

Patent

active

050303430

ABSTRACT:
A rigid cell-like structure primarily for use under gardens and roads where it is required to provided good drainage; the cell comprising two substantially parallel perforate planar surfaces maintained in a fixed spaced relationship from each other by means of a plurality of spacer members; the perforate nature of both surfaces and the disposition of spacer members being such that gases or liquids may freely pass through the composite structure around the spacer means in any direction.

REFERENCES:
patent: 1601465 (1926-09-01), Barbour
patent: 1773417 (1930-08-01), Whitacre
patent: 2378239 (1945-06-01), Myron
patent: 2874844 (1959-02-01), Wanner
patent: 3611729 (1971-10-01), Stark
patent: 3795180 (1974-03-01), Larson
patent: 4057550 (1977-11-01), Wagner
patent: 4246305 (1981-01-01), Delattre
patent: 4572700 (1986-02-01), Mantarro et al.
patent: 4619765 (1986-10-01), Roberts

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