US Patent No. 10,099,231

REVERSING MECHANISM FOR AN IRRIGATION SPRINKLER WITH A REVERSING GEAR DRIVE


Patent No. 10,099,231
Issue Date October 16, 2018
Title Reversing Mechanism For An Irrigation Sprinkler With A Reversing Gear Drive
Inventorship Michael L. Clark, San Marcos, CA (US)
Zachary B. Simmons, Escondido, CA (US)
Assignee Hunter Industries, Inc., San Marcos, CA (US)

Claim of US Patent No. 10,099,231

1. A sprinkler comprising:a turbine;
a nozzle;
a gear box case;
a planetary gear drive comprising:
a first sun gear configured to rotate about a sun gear axis;
a second sun gear configured to rotate about the sun gear axis;
a first planetary gear meshed with the first sun gear and configured to rotate about a first planetary gear axis;
a second planetary gear configured to rotate about a second planetary gear axis and to be driven by the second sun gear; and
at least one ring gear;
a first gear carrier rotatable about the sun gear axis and configured to fix the first and second planetary gear axes in place with respect to each other;
a reversing mechanism rotatably coupling the turbine and the nozzle, the planetary gear drive including at least a portion of the reversing mechanism having a shifting drive shaft that reciprocates between a first position and a second position to alternately engage the first and second sun gears and thereby change a direction of rotation of subsequent stages of the planetary gear drive; and
at least one clutch dog connected to the drive shaft, the at least one clutch dog configured to engage with at least one clutch tooth formed on the first sun gear when the shifting drive shaft is in the first position and engage with at least one clutch tooth formed on the second sun gear when the shifting drive shaft is in the second position.