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Shiftable stator sprinkler head

  • US 4,201,344 A
  • Filed: 12/23/1977
  • Issued: 05/06/1980
  • Est. Priority Date: 12/23/1977
  • Status: Expired due to Term
First Claim
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1. In a sprinkler head having a body adapted for connecting to a conduit supplying fluid under pressure and including a vaned turbine for rotating in response to fluid flowing through the body, motor means driven by the turbine, and a nozzle for directing the fluid emerging from the body adapted for rotation by the motor, the improvement for causing the nozzle to be repeatably rotated between a first point and a second point comprising:

  • (a) means for directing the fluid flow against the turbine being switchable between a first position where the turbine is rotated in one direction and a second position where the turbine is rotated in the opposite direction, said switchable directing means comprising(a1) a first support structure having a plurality of first holes therein, being disposed in the body of the sprinkler head between the connection to the source of fluid under pressure and the turbine, whereby at least a portion of the fluid is directed through said first holes,(a2) a second support structure having a plurality of second holes therein, being disposed in parallel-spaced relationship to said first support structure between said first support structure and the turbine, said first and second support structures being rotatable with respect to one another about a common axis between a first position and a second position, and,(a3) a plurality of deflecting vanes disposed between said first and second support structures, being hingedly attached to said first support structure on one side and hingedly attached to said second support structure on the opposite side, said deflecting vanes being longer between said points of attachment to said first and second support structures than the spacing between said first and second structures, so that said deflecting vanes are angularly disposed between said first and second support structures whereby fluid entering said first holes is angularly directed out said second holes against the vanes of the turbine by said deflecting vanes, said deflecting vanes being movable as said first and second support structures are rotated with respect to one another between said first and second positions of a first angular position wherein the fluid is directed to rotate the turbine in one direction and a second angular position wherein the fluid is directed to rotate the turbine in an opposite direction; and

    ,(b) means responsive to the position of the nozzle for switching said switchable directing means at said first point and said second point whereby the motor is driven and thereby the nozzle is rotated between the first point and the second point by the repeated switching of said switchable directing means between said first and second positions.

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