Abstract: A method for cleaning storm sewers, sanitary sewers, culverts and other drains and waterways is disclosed which includes the steps of prewetting the debris in the waterway with water from a first water directing means, plowing the prewetted debris loose with a plowing means, further wetting the prewetted debris with water from a second water directing means, said first and second water directing means directing water simultaneously, and sweeping the further wetted debris forward with a plunging means.

Abstract: An implement and method for cleaning sanitary, industrial or the like drains, said implement having a carriage hub with radially extending cutting means and a correspondingly radially extending plunger means, together with means for wetting the debris in the drain in advance of the cutting means, said plunger means comprising a plurality of fan shaped elements pivoted between said radially extending cutting means and which are folded backwardly when the implement is pulled forwards through a drain in a direction parallel to the axis of the hub and which are expanded into a plate when the implement is pulled backwards in an opposite direction. Depending on the configuration of the fan shaped elements, the implement is capable of cleaning drains of various configurations including box culverts and tubular pipes.

Abstract: An implement for cleaning tubular drains and a method for cleaning therewith, said implement having a carriage assembly with radially extending cutting means at a forward end and a correspondingly radially extending plunger means in spaced relationship therewith at a rearward end, together with means for wetting the debris in the drain in advance of the forward passage of the plunger means, said plunger means comprising a plurality of fan shaped elements which are folded backwardly into a cone when the implement is pulled forward and which are expanded into a disc when the implement is pulled backwards.