초록 ▼

A rotary sprinkler having an intermittent motion mechanism which includes a driving gear and a driven gear with the driving and driven gears being drivingly engageable. The driven gear has a first set of gear teeth on one level and a second set of gear teeth on a second level. The gear teeth of the

A rotary sprinkler having an intermittent motion mechanism which includes a driving gear and a driven gear with the driving and driven gears being drivingly engageable. The driven gear has a first set of gear teeth on one level and a second set of gear teeth on a second level. The gear teeth of the first set are axially and circumferentially offset from the gear teeth of the second set. The driving gear has a single driving gear tooth drivingly engageable with the gear teeth of the first set to drive the driven gear and a circumferential surface axially offset from the driving gear tooth and cooperable with the gear teeth of the second set to substantially retain the driven gear against rotation when the driving gear tooth is not in driving engagement with the gear teeth of the first set.

대표청구항 ▼

[ We claim:] [4.] A rotary sprinkler comprising:a supporting structure having an inlet for receiving irrigation water;a sprinkler head mounted for rotational movement on the supporting structure and adapted to receive irrigation water from the inlet;a drive motor carried by the supporting structure;

[ We claim:] [4.] A rotary sprinkler comprising:a supporting structure having an inlet for receiving irrigation water;a sprinkler head mounted for rotational movement on the supporting structure and adapted to receive irrigation water from the inlet;a drive motor carried by the supporting structure;a drive train having a rotational output and being drivingly coupled to the motor and to the sprinkler head so that the rotational output can impart rotational movement to the sprinkler head;said drive train including an intermittent motion mechanism for causing a pause in said rotational output whereby the sprinkler head is rotated intermittently;said intermittent motion mechanism including a driving gear having a driving gear tooth on one level and first and second circumferentially spaced gear tooth surfaces on a second level, said driving gear tooth being between said gear tooth surfaces and axially offset from said gear tooth surfaces;said intermittent motion mechanism including a driven gear having a first set of gear teeth on one level and a second set of gear teeth on a second level, the gear teeth of the first set being axially and circumferentially offset from the gear teeth of the second set;the driving gear tooth being drivingly engageable with the gear teeth of the first set and the gear tooth surfaces being drivingly engageable with the gear teeth of the second set to drive the driven gear, said driving gear having a circumferential surface axially offset from said driving gear tooth and cooperable with the gear teeth of the second set to substantially retain the driven gear against rotation when said driving gear tooth and said gear tooth surfaces are not in driving engagement with the gear teeth of the first and second sets of gear teeth, respectively; andadjacent gear teeth of each of said first and second sets being spaced circumferentially by an amount sufficient to accommodate another gear tooth and two tooth spaces with said another gear tooth and said tooth spaces being of a size to cooperate with said driving gear tooth.