Patent ID: 6601347
Filing Date: 2003-08-05
Classification: E03F

Abstract:
A method of manufacturing a ready-for-use catch pit having a substantially cylindrical shape, the catch pit comprising a sump and a wall element placed on the sump, the method comprising the steps of:during manufacture of the catch pit, when the wall element is poured, incorporating a removable profile component in the wall element thereby following its curvature; providing the wall element with an annular cottering or sleeve joint adapted to receive a sewage drain pipe, and having an end defining an arcuate profile corresponding to said curvature of said wall element; and after the wall element is set, removing the profile component, thereby producing an orifice in the wall element for receiving the cottering or sleeve joint, wherein the profile component comprises a protrusion extending into the catch pit's interior so as to cause that after the profile component's removal, the orifice narrows in steps toward the interior, defining a sideways extending rim, and wherein said end of said cottering or sleeve joint defining an arcuate profile is placed onto the sideways extending rim of the orifice.