US Patent 7252458 Mitred grate and drain cover

A drain cover and pipe combination comprises a drain cover including a substantially elliptical frame portion defining a space, the space having an axis substantially normal to the frame, and at least one cross piece located in the space so as to define a plurality of openings in the drain cover. The pipe comprises a substantially tubular member having a longitudinal axis, with the pipe having a substantially elliptical shaped rim at one end thereof with a rim axis which is other than parallel to the longitudinal axis of the tubular member. Securing means are provided for securing the drain cover over the rim of the pipe.