Drain cover for generally open flat drainage areas with debris blockage and open drainage portions

a flat drainage area and drainage cover technology, applied in the field of drain covers, can solve the problems of flooding situations, damage that is often measured in the thousands, and the type of drains is only possible against, and achieve the effect of great strength
US20140069854A1Inactive Publication Date: 2014-03-13SUTHERLAND MARK
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
SUTHERLAND MARK
Publication Date
2014-03-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

A drain cover having a main drainage surface with relatively larger apertures or openings therein, comprising generally 50 percent of the surface, so that larger debris is accepted into a related drain pipe when a depending skirt portion of the drain cover, having smaller perforations, becomes clogged. In this way a two-layer drainage system for a generally flat surface is provided that allows draining of water and small particulates alone when possible, but upon the clogging of the smaller openings the generally flat surface can be protected from flooding by allowing larger particulates to drain into the main drainage surface. The main drainage surface is held above the flat surface by the depending skirt, at a level of 3 / 8 to 1 inch above the flat surface. When the depending skirt openings are clogged the water and debris will rise until allowed to drain into the larger openings of the main drainage surface.
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Description

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] The present application is a continuation of U.S. patent application Ser. No. 13 / 614,043; filed on Sep. 13, 2012, and now pending, the full disclosures of which is incorporated herein by reference.FIELD OF THE INVENTION

[0002] The present invention concerns a drain cover for use on drainage pipes that are within generally open flat surfaces prone to flooding. More particularly the present invention concerns a drain cover having a generally flat surface, open to a drainage pipe and a skirt depending from the flat surface for drainage of water even in the presence of debris that otherwise would block the drain. The skirt and flat surface portions of the drain cover each overlying the surface to be drained in a manner that permits drainage while preventing flooding due to the blockage of drain holes. The device in a preferred embodiment is used outside of a walk-out basement or another entry door that is close to or, below grade and as such i...

Claims

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