US 11,980,835 B2
Double-filter basket for stormwater retention system drain
David Zarraonandia, Thousand Oaks, CA (US)
Assigned to Foley Products Company, LLC, Newnan, GA (US)
Filed by Foley Products Company, LLC, Newnan, GA (US)
Filed on Jul. 27, 2020, as Appl. No. 16/939,245.
Prior Publication US 2022/0023778 A1, Jan. 27, 2022
Int. Cl. B01D 29/58 (2006.01); B01D 29/33 (2006.01); B01D 29/96 (2006.01); B01D 39/08 (2006.01); C02F 1/00 (2023.01); C02F 103/00 (2006.01)
CPC B01D 29/58 (2013.01) [B01D 29/33 (2013.01); B01D 29/96 (2013.01); B01D 39/08 (2013.01); C02F 1/001 (2013.01); B01D 2201/605 (2013.01); B01D 2239/0618 (2013.01); C02F 2103/001 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A stormwater management system comprising:
a floor having a drainage opening, the drainage opening having a drainage opening area;
an outer filter assembly and an inner filter assembly;
the inner filter assembly comprising an inner filter basket and an inner filter member, the inner filter basket being operatively secured to the floor, the inner filter member being releasably secured to the inner filter basket, the inner filter member being operatively attached to a portion of the floor adjacent the drainage opening such that the inner filter member covers the drainage opening so that water flowing from the stormwater management system into the drainage opening passes through the inner filter member, the inner filter member having an inner filter area capable of permitting stormwater to flow therethrough, the inner filter area of the inner filter member being at least twice as large as the drainage opening area;
the outer filter assembly comprising an outer filter basket and an outer filter member, the outer filter basket being operatively secured to the floor, the outer filter member being releasably secured to the outer filter basket, the outer filter member being capable of filtering silt or particulate matter from stormwater in the stormwater management system and operatively attached to a portion of the floor adjacent the drainage opening such that the outer filter member covers the inner filter member and covers the drainage opening such that water flowing from the stormwater management system into the drainage opening passes through both the outer and inner filter members, the outer filter member having an outer filter area capable of permitting stormwater to flow therethrough;
wherein the outer filter basket is pivotably secured to the floor for movement of the outer filter basket between a covered position and an uncovered position, the outer filter basket covering the drainage opening in the covered position, the outer filter basket being away from the drainage opening in the uncovered position, the inner and outer filter assemblies being arranged in a manner to enable a user to access the inner filter member for removal from the inner filter basket and replacement with another inner filter member when the outer filter basket is in its uncovered position.