Speed governor for irrigation system
AssigneeR. M. Wade & Co.
InventorGail Cornelius
Life of this patent
Estimating the term…
Abstract
In a system including, for example, an irrigation line supported by towers and rotatable about a central pivot, one tower thereof, for example, the outermost tower, includes a governor system for providing that increased water flow is provided to the water motor driving that tower as that tower is driven up a grade, and decreased water flow is provided to the water motor driving that tower as that tower is driven down a grade, as compared to the water flow to such water motor as the tower is driven over generally level ground.
Claims11
A drive apparatus for a pivot irrigation line comprising:
- frame means on which an irrigation line is supported;
- rotatable support means mounted to said frame means and on which the frame means are supported with the rotatable support means on the ground;
- motor means operatively coupled with said rotatable support means to apply driving torque to said rotatable support means;
- means for providing a motor drive torque to rotate said rotatable support means to drive said frame means over generally level ground;
- and
- means for varying motor drive torque to maintain a generally constant speed of rotation of the rotatable support means as the frame means is driven over a variation in grade.
A drive apparatus for an irrigation apparatus comprising:
- frame means on which an irrigation line is supported;
- rotatable support means mounted to said frame means and on which the frame means are supported with the rotatable support means on the ground;
- motor means operatively coupled with said rotatable support means to apply driving torque to said rotatable support means;
- means for providing a motor drive torque to rotate said rotatable support means to drive said frame over generally level ground;
- and
- means comprising governor means for varying motor drive torque to maintain a generally constant speed of rotation of the rotatable support means as the frame means is driven under varying load conditions.
A drive apparatus for an irrigation line comprising:
- frame means on which an irrigation line is supported;
- rotatable support means mounted to said frame means and on which the frame means are supported with the rotatable support means on the ground;
- variable speed motor means operatively coupled with said rotatable support means to apply driving torque to said rotatable support means;
- means for providing a motor drive torque to rotate said rotatable support means to drive said frame over the ground;
- means for selectively determining the maximum motor means speed available;
- and
- means comprising governor means for varying motor drive torque to maintain a generally constant speed of the support means as the frame means is driven over a variation in grade.
Dependencies are inferred from the claim text.