Liquid purification or separation – Processes – Separating
Patent
1991-01-15
1992-06-09
Dawson, Robert A.
Liquid purification or separation
Processes
Separating
210102, 210464, 222189, B01D 3700
Patent
active
051204541
ABSTRACT:
A cover for enclosing the open top of a container, such as a liquid waste receptacle. The cover comprises an annular support dimensioned to fit generally coaxially within the open top of the container. The annular support defines an opening for passage of materials therethrough and into the container. The cover further comprises a mechanism for releasably securing the annular support to the upper edge margin of the container, a straining element in the annular support having a straining area coextensive with substantially the entire area of the opening in the annulaar support for straining solid objects of a predetermined maximum dimension from entry into the container while permitting entry of liquids through the opening and into the container, a lid dimensioned for covering the opening in the annular support, and a hinge for securing the lid to the annular support. The lid is swung on the hinge between an open position in which the lid is positioned away from the opening in the annular support to provide access to the top of the container and a closed position in which the lid completely covers the opening in the annular support and seals against the annular support to prevent materials within the container from escaping the container.
REFERENCES:
patent: 1143244 (1915-06-01), Wilson
patent: 2142790 (1939-01-01), Kodaira
patent: 2191395 (1940-02-01), Moser
patent: 2450520 (1948-10-01), Maddux
patent: 3563417 (1971-02-01), Jordan et al.
patent: 4240568 (1980-12-01), Pool
patent: 4319762 (1982-03-01), Streit et al.
Dawson Robert A.
Fortuna Ana
Resourceful Environmental Ideas, Inc.
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