Reversible gear oscillating sprinkler with cam controlled shift retainer
First Claim
Patent Images
1. An oscillating sprinkler unit, comprising:
- a sprinkler head mounted for rotation about a first axis;
drive means comprising a carrier and alternately operable terminal gear means on said carrier and shiftable with said carrier to alternately engageable driving positions within said drive means for driving said sprinkler head in alternate directions;
shifting arm means pivotally moveable between alternate shifting positions by shoulder means carried by said drive means for shifting said carrier between said alternately engageable positions; and
cam means on said carrier, and follower means slideably engaging said cam means for biasing and retaining said carrier in a selected one of said alternately engageable positions until shifted therefrom by said shifting arm means.
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Accused Products
Abstract
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 a cam controlled shift retainer unit for maintaining the carrier in its engaging position until positively shifted by a shifting arm and over-center springs for biasing and maintaining the shifting arm to the alternate driving engagement positions.
50 Citations
26 Claims
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1. An oscillating sprinkler unit, comprising:
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a sprinkler head mounted for rotation about a first axis; drive means comprising a carrier and alternately operable terminal gear means on said carrier and shiftable with said carrier to alternately engageable driving positions within said drive means for driving said sprinkler head in alternate directions; shifting arm means pivotally moveable between alternate shifting positions by shoulder means carried by said drive means for shifting said carrier between said alternately engageable positions; and cam means on said carrier, and follower means slideably engaging said cam means for biasing and retaining said carrier in a selected one of said alternately engageable positions until shifted therefrom by said shifting arm means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An oscillating sprinkler unit, comprising:
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a sprinkler head mounted for rotation about a first axis; a drive motor; a reversible gear train for drivingly connecting said drive motor to said sprinkler head for driving said sprinkler head in alternate directions, comprising a final drive gear connected to said sprinkler head, shiftable drive means comprising a carrier and alternately operable terminal gear means on said carrier shiftable with said carrier to alternately engageable positions with said final drive gear for driving said sprinkler head in alternate directions; shifting arm means pivotally mounted adjacent said carrier and moveable between alternate shifting positions by engagement with shoulder means carried by said gear train, and lost motion means for connecting said shifting arm means with said carrier for shifting said carrier between said alternately engageable positions upon movement of said shifting arm means between said alternate shifting positions; and cam means on said carrier slideably engageable by adjacent biasing follower means for biasing and maintaining said carrier in a selected one of said alternately engageable positions until shifted therefrom by said shifting arm means. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An oscillating sprinkler unit, comprising:
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a housing having a generally cylindrical configuration with a central axis, an inlet at a lower end for attachment to a source of water and an outlet at an upper end; a sprinkler head mounted at said upper end for rotation about said central axis; a drive motor mounted in said housing for driving said sprinkler head; a shiftable gear train comprising terminal drive gear means including an internal gear connected to said sprinkler head, shiftable means for alternatively shifting said terminal drive gear means alternatively into engagement with said internal gear for driving said sprinkler head in alternate directions; said shiftable drive means comprising a drive shaft driven by said drive motor and operatively connected to a drive gear mounted for rotation about a second axis offset from said first axis; a pivoting carrier mounted for pivotal movement about said second axis; one of said terminal gear means mounted on said carrier on one side of said second axis, and the other of said drive gears mounted on said carrier on the other side of said second axis; a shifting arm mounted adjacent said carrier for pivotal movement about said first axis; lost motion means disposed between said shifting arm and said carrier for connecting said shifting arm to said carrier for shifting said terminal drive gear means to alternately engageable positions; first over-center biasing means for maintaining said shifting arm means in a selected one of said alternately shifting positions; and over-center cam means on said carrier slideably engageable by adjacent spring biased follower means for biasing and maintaining said carrier in a selected one of said alternate engageable positions. - View Dependent Claims (24, 25, 26)
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Specification