Rotary strut sprinkler
AssigneeNelson Irrigation Corporation
InventorsGeorge L. Sesser, Craig B. Nelson
Life of this patent
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Abstract
A rotary sprinkler includes a sprinkler body including a nozzle, a water-deflection plate supported for rotational movement relative to the sprinkler body, the water-deflection plate having one or more grooves configured to cause the water-deflection plate to rotate when impinged upon by a stream emitted from the nozzle; a first brake arranged to slow rotation of the water-deflection plate at all times; and a second brake arranged to further slow rotation of the water-deflection plate as a function of water pressure exerted on the water-deflection plate.
Claims20
A rotary sprinkler comprising a sprinkler body including a nozzle, a water-deflection plate supported for rotational movement relative to said sprinkler body, said water-deflection plate having one or more grooves configured to cause said water-deflection plate to rotate when impinged upon by a stream emitted from the nozzle;
- a first brake arranged to slow rotation of the water-deflection plate at all times;
- and
- a second brake arranged to further slow rotation of the water-deflection plate as a function of water pressure exerted on the water-deflection plate such that rotation speed of the water-deflection plate decreases as water pressure on the water-deflection plate increases.
A rotary sprinkler comprising a sprinkler body including a nozzle, a water-deflection plate supported on an axially-moveable sleeve via plural struts extending between said sleeve and said water-deflection plate for rotational and limited axial movement relative to said sprinkler body, said water-deflection plate having one or more grooves configured to cause said water-deflection plate and said sleeve to rotate when impinged upon by a stream emitted from the nozzle;
- a viscous brake laterally offset from said sleeve and operatively connected to said sleeve for slowing rotation of said sleeve and said water-deflection plate.
A rotary sprinkler comprising a sprinkler body including a nozzle, a water-deflection plate supported for rotational movement relative to said sprinkler body, said water-deflection plate having one or more grooves configured to cause said water-deflection plate to rotate when impinged upon by a stream emitted from the nozzle;
- a brake mechanism adapted to slow rotation of said deflection plate as a function of water pressure exerted on said deflection plate;
- and wherein said water-deflection plate is supported for limited axial movement along a longitudinal axis extending through said nozzle, said brake mechanism actuated by axial movement of said deflection plate away from said nozzle.
Dependencies are inferred from the claim text.