초록 ▼

A gear driven oscillating sprinkler head includes a reversible gear train for transmitting drive from a drive motor to the oscillating sprinkler head with a shifting mechanism, including a shiftable carrier on which a pair of driving pinions are mounted for shifting alternately into driving engageme

A gear driven oscillating sprinkler head includes a reversible gear train for transmitting drive from a drive motor to the oscillating sprinkler head with a shifting mechanism, including a shiftable carrier on which a pair of driving pinions are mounted for shifting alternately into driving engagement with an internal ring gear, with a lost motion connection between a shifting arm and the carrier with separate over-center spring units for separately biasing the carrier and shifting arm to the alternate driving engagement positions.

대표청구항 ▼

An oscillating sprinkler unit, comprising: a sprinkler head mounted for rotation about a first axis; a drive motor; a reversible gear train for drivingly connecting said drive motor for driving said sprinkler head in alternate directions, comprising final drive gear means connected to said sprinkler

An oscillating sprinkler unit, comprising: a sprinkler head mounted for rotation about a first axis; a drive motor; a reversible gear train for drivingly connecting said drive motor for driving said sprinkler head in alternate directions, comprising final drive gear means connected to said sprinkler head, shiftable drive means comprising alternately operable terminal gear means and carrier means for carrying said terminal gear means and shiftable to alternately engageable positions with said final drive gear means for driving said sprinkler head in alternate directions; shifting arm means pivotally mounted adjacent said carrier means and movable between alternate shifting positions by engagement with shoulder means carried by said final drive gear means, and lost motion means for connecting said shifting arm means with said carrier means for shifting said carrier means between said alternately engageable positions upon movement of said shifting arm means between said alternate shifting positions; first over-center biasing means for maintaining said carrier means in a selected one of said alternately engageable positions until positively shifted therefrom by said shifting arm means; and second over-center biasing means for maintaining said shifting arm means in a selected one of alternate shifting positions by said shoulder means.