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Sprinkler

  • US 5,641,122 A
  • Filed: 02/02/1994
  • Issued: 06/24/1997
  • Est. Priority Date: 02/09/1993
  • Status: Expired due to Fees
First Claim
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1. A pop-up sprinkler comprising:

  • an outer housing defining a water inlet;

    an inner housing which is raised automatically in response to the supply of water under at least a predetermined pressure;

    a water driven turbine disposed within said inner housing and driven by water entering the sprinkler via said water inlet;

    a reducing gear assembly housing disposed within said inner housing and driven by said water driven turbine and having an output shaft fixed against rotation with respect to said inner housing, whereby operation of the water driven turbine causes the reducing gear assembly housing to rotate relative to the inner housing; and

    a rotatable water outlet fixed to the reducing gear assembly housing for rotation together therewith relative to said inner housing.

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