Patent ID: 8590071

Claim:
A device for use in a swimming pool structure, the swimming pool structure including a pool and a circulation system having a piping assembly and a pump for cyclically communicating water through the piping assembly between the pool and the pump, and the piping assembly terminating in a collar installed in the swimming pool structure, the device comprising: an insert and an end cap coupled to the insert, the insert and end cap cooperating to define a chamber coupled in fluid communication to the piping assembly through an inlet in the end cap; a piston including a nozzle, the piston carried within the chamber for reciprocal movement between a lowered position and a raised position in which the piston is in one of a plurality of indexed orientations and the nozzle is free of obstruction above the insert; the piston rotates to an adjacent indexed orientation in response to reciprocation of the piston between the raised and lowered positions in response to the cyclical application of water flow through the chamber from the inlet to the nozzle; and upper and lower engagement assemblies prevent rotational movement of the piston with respect to the insert in the raised and lowered positions, respectively, of the piston.