Patent ID: 6848124

Claim:
A pop-up nozzle assembly for cleaning a swimming pool, said nozzle assembly comprising in combination: a) a body adapted to be attached to a conduit for periodically conveying water to said body; b) a spring loaded sleeve supported in said body and adapted to be erected along its longitudinal axis and rotatable thereabout in response to water pressure within the conduit and to be retracted in the absence of water pressure; c) a nozzle housing supported by said sleeve, said nozzle housing including an outlet for discharging a stream of water upon erection of said sleeve; d) a cam ring having an upper and a lower set of saw tooth guides; e) at least one pin extending laterally from said nozzle housing for engaging said upper and lower saw tooth guides upon erection and retraction of said sleeve, each engagement of said at least one pin with said upper and lower saw tooth guides upon erection and retraction of said sleeve causing incremental rotation of said nozzle housing and said sleeve in a first or a second direction about the longitudinal axis of said sleeve and through a predetermined angle; f) a cam reverser having a plurality of protrusions cooperating with said upper and lower saw tooth guides of said cam ring for directing the movement of said at least one pin to reverse the direction of rotation of said sleeve and said nozzle housing at each limit of the predetermined angle; and g) a pattern cam keyed with said sleeve for determining the limits of the predetermined angle and for initiating reversal of rotation of said sleeve and said nozzle housing.