Liquid purification or separation – Structural installation – Geographic
Patent
1974-09-17
1976-06-08
Hart, Charles N.
Liquid purification or separation
Structural installation
Geographic
52227, 61 11, 210532S, E02B 1100, C02B 306
Patent
active
039620883
ABSTRACT:
A concrete block assembly for use in a septic tank sewage disposal system including a plurality of porous blocks each having multiple apertures therethrough oriented in end-to-end, sealed relationship and retained in this relationship by tension rods extending through the assembly to form a module which can be assembled at a factory site, transported to the site of installation and lowered into a trench or ditch to form part of the drain field of a septic tank disposal system. Connecting assemblies are provided for assembling a plurality of block modules in end-to-end communicating relationship to provide adequate capacity for each installation.
REFERENCES:
patent: 1214442 (1917-01-01), Edlin
patent: 1306962 (1919-06-01), Jagdmann
patent: 2087958 (1937-07-01), Allen
patent: 2716864 (1955-09-01), Hacker
patent: 2921354 (1960-01-01), Pankey et al.
patent: 3422010 (1969-01-01), Case
patent: 3430397 (1969-03-01), Ellis
Kuhlenschmidt Floyd E.
Kuhlenschmidt Harold L.
Elberfeld Concrete Block Co., Inc. (Entire)
Hart Charles N.
Jacobson Harvey B.
O#Brien Clarence A.
Spitzer Robert H.
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