Patent ID: 9540799
Date: 2017-01-10
CPC Classifications: E03F

Claim:
1. An apparatus for pre-filtering storm water entering an underground storm water management system comprising: (a) an inlet chamber comprising: (i) an inlet opening, (ii) a chute extending from a first bottom portion of the inlet chamber, the chute comprising a front wall, a back wall separate from the front wall, and a side opening along the back wall, and (iii) a bypass opening along a second bottom portion of the inlet chamber, downstream from the front and back walls, said bypass opening extending through the inlet chamber, adjacent to the first bottom portion; and (b) a filtration chamber adjacent to the inlet chamber, the filtration chamber comprising filtration medium and one or more outlet openings; wherein the inlet opening, side opening of the chute, and filtration chamber define a primary flow route when storm water accumulates between the walls of the chute; and further wherein the inlet opening and bypass opening define an alternate flow route when storm water accumulates above at least one of the walls of the chute.