Adjustable arc of coverage cone nozzle rotary stream sprinkler with stepped and spiraled valve element

A sprinkler head nozzle assembly comprising:

• a nozzle housing including an inlet for pressurized water and an outlet downstream of the inlet;
• a rotating arc adjustment ring mounted on the nozzle housing such that rotation of the arc adjustment ring extends and reduces a length of an arcuate exit opening to set an arc of coverage of the sprinkler head nozzle assembly;
• a rotating distributor, mounted on a central shaft extending through an arcuate adjustable nozzle including a valve assembly positioned below the rotating distributor in the nozzle housing and operable to direct water onto the rotating distributor;
• the valve assembly further comprising:
• an upper valve element including a top portion with a conical axially stepped and spiraled underside valve surface;
• and
• a lower valve member including a central opening and a radially stepped and spiraled edge surrounding the central opening, the upper valve member mounted in the lower valve member such that the lower valve member is movable relative to the upper valve member such that interaction between the axially stepped and spiraled underside valve surface of the upper valve member and the stepped and spiraled edge of the lower valve member defines the arcuate exit opening to provide a conically shaped water discharge stream over a desired arc of coverage when water flows through the valve assembly.

A sprinkler head comprising:

• a base;
• a conical adjustable nozzle defining an adjustable arcuate discharge orifice;
• a rotating distributor supported on a shaft extending upwardly from said base, and adapted to be impinged by a stream emitted from the nozzle;
• and
• an arc adjustment ring rotatably mounted on said base, said arc adjustment ring operatively connectable with said nozzle to adjust said arcuate discharge orifice.

A sprinkler head nozzle assembly comprising:

• a nozzle housing including an inlet for pressurized water and an outlet downstream of the inlet;
• a rotating arc adjustment ring mounted on the nozzle housing such that rotation of the arc adjustment ring extends and reduces a length of an arcuate exit opening to set an arc of coverage of the sprinkler head nozzle assembly;
• a rotating distributor, mounted on a central shaft extending through an arcuate adjustable nozzle including a valve assembly positioned below the rotating distributor in the nozzle housing and operable to direct water onto the rotating distributor;
• the valve assembly further comprising:
• an upper valve element including a top portion with a conical axially stepped and spiraled underside valve surface;
• and
• a lower valve member including a central opening, the lower valve member including one of an axially stepped and spiraled upper surface and a radially stepped and spiraled edge surrounding the central opening, the upper valve member mounted in the lower valve member such that the one of the lower valve member and the upper valve member is rotatable and movable axially with respect to the other of the upper valve member and lower valve member such that interaction between the axially stepped and spiraled underside valve surface of the upper valve member and one of the axially stepped and spiraled surface and radially stepped and spiraled edge of the lower valve member defines the arcuate exit opening to provide a conically shaped water discharge stream over a desired arc of coverage when water flows through the valve assembly.