Liquid purification or separation – Structural installation – Grated inlet surface drain
Reexamination Certificate
2006-09-19
2006-09-19
Upton, Christopher (Department: 1724)
Liquid purification or separation
Structural installation
Grated inlet surface drain
C210S165000, C210S170050, C405S042000
Reexamination Certificate
active
07108783
ABSTRACT:
A drain inlet is disclosed for draining of liquid from an area in which it has collected. The inlet includes a body having a chamber therein for receiving the liquid from the area and an opening at the bottom of the body for draining the liquid from the chamber. The body is formed by a plurality of side walls each of which has a lateral cross section which is greater than the next adjacent lower side wall which permits a substantial reduction in the height of the body. The bottom of the side walls is connected to the top of the next lower side wall by a laterally extending wall which has a plurality of elongated slotted openings so that the fluid to be drained flows upwardly through these openings, into the chamber and out of the chamber through the opening at the bottom of the body to drain the area. The total cross sectional area of the openings in the walls through which the liquid flows is at least as great and preferably substantially greater than the cross sectional area through the opening at the bottom of the body which results in a substantial reduction in clogging of the openings by debris which may be present in the liquid being drained.
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Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Plastics Designs, Inc.
Upton Christopher
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