Patent ID: 6112935
Filing Date: 2000-09-05
Classification: E03F

Abstract:
A catch basin comprising a unitary single-piece body formed by a rotational molding process and having a substantially uniform wall thickness throughout, said catch basin comprising the following structural elements:a rectangular flat bottom;a first peripheral sidewall comprising a first band of four substantially flat first panels continuous with the bottom and with each other, said first panels having an upper edge;a second peripheral sidewall comprising a second band of four substantially flat second panels continuous with each other, said second panels each having an upper edge and a lower edge;a shoulder forming an inside step and an outside downwardly-facing overhang, the upper edges of the first panels and the lower edges of the second panels being continuous with said shoulder;a third peripheral sidewall comprising a third band of four third panels, and each said third panel having an upper edge and a lower edge, said upper edges of the second panels being continuous with the lower edges of the third panels, said lower edges of the third panels defining a downwardly extending pad at each side of the lower edges with a central portion of a lesser vertical dimension between said pads, said upper band having a greater length than said second panels, said pads thereby forming an inside step and an outside overhang, adjacent said pads being continuous with one another; anda peripheral collar continuous with said upper edges of said third panel, said collar having an outwardly extending shoulder, a peripheral upright band, an overhanging upwardly facing bearing surface, and an internal step, thereby forming an opening to receive a portion of a grate, and a bearing surface on which a portion of said grate can rest.