Patent ID: 6364217
Filing Date: 2002-04-02
Classification: B05B,Y10T

Abstract:
A reversing gear drive system for an irrigation sprinkler having rotary drive means for rotatably driving a spray head, said reversing gear drive system, comprising:a gear carrier having a drive gear rotatably driven by the rotary drive means, and first and second output gears rotatably driven by said drive gear in opposite directions; a shift mechanism movable between first and second positions for respectively shifting said gear carrier between a forward-drive position with said first output gear rotatably driving the spray head in a forward direction, and a reverse-drive position with said second output gear rotatably driving the spray head in a reverse direction; and stop means defining opposite end limits of a predetermined part-circle path of rotation for the spray head; said shift mechanism including a reverse trip spring engaged by said stop means upon spray head rotation substantially to each of said opposite end limits of said predetermined part-circle path, said trip spring being loaded upon engagement with said stop means to apply a reversing spring force to move said shift mechanism between said first and second positions to correspondingly shift-said gear carrier between said forward-drive and reverse-drive positions.