Patent ID: 8533874

Claim:
A pool cleaning system having a plurality of incrementally rotating pool cleaning head assemblies on a floor of a pool, comprising: at least one debris capture point in the pool; at least one first cleaning head assembly on the floor of the pool; and at least one second incrementally rotating cleaning head assembly on the floor of the pool between the at least one debris capture point and the at least one first cleaning head assembly and comprising an incremental rotation and a net water flow vector in the direction of the debris capture point; wherein the at least one second incrementally rotating cleaning head assembly comprises: a cam assembly comprising an upper section, a lower section, and a rotatable section slidably disposed between the upper section and the lower section and rotatable in relation to the upper section and the lower section between a first extent and a second extent, each of the upper section and the lower section comprising a plurality of saw tooth members; and a stem extending through the cam assembly and comprising a pin slidably engaged with the plurality of saw tooth members, the pin configured to incrementally rotate the stem clockwise in intermittent contact with the saw tooth members and the rotatable section of the cam assembly during a vertical translation of the stem through intermittent application of water pressure force, and to slidably rotate the rotatable section of the cam assembly from its first extent to its second extent; and wherein the cam assembly is configured to automatically reverse the incremental rotation of the stem to counterclockwise when the rotatable section of the cam assembly is rotated to its second extent.