초록 ▼

An adjustable oscillating wave-type irrigation sprinkler having an impact or impulse drive type mechanism for effecting side-to-side oscillation by a spray tube about a horizontal axis, the drive mechanism including a pair of drive spoons coupled to impact arms journaled for rotation relative to the

An adjustable oscillating wave-type irrigation sprinkler having an impact or impulse drive type mechanism for effecting side-to-side oscillation by a spray tube about a horizontal axis, the drive mechanism including a pair of drive spoons coupled to impact arms journaled for rotation relative to the spray tube and intercepting streams of water from the spray tube to produce incremental rotation of the spray tube about the horizontal axis.

대표청구항 ▼

In an oscillating wave irrigation sprinkler of the type primarily intended for use in watering lawns, flowers, shrubs, and the like, said sprinkler including a support base, a spray tube assembly rotatably mounted to said base for side-to-side oscillation about a generally horizontal axis, a plurali

In an oscillating wave irrigation sprinkler of the type primarily intended for use in watering lawns, flowers, shrubs, and the like, said sprinkler including a support base, a spray tube assembly rotatably mounted to said base for side-to-side oscillation about a generally horizontal axis, a plurality of individual spray openings formed in said spray tube, said openings being formed to eject discrete water streams outwardly of said spray tube in a fan-shaped spray pattern, and drive means for effecting limited side-to-side oscillation of said spray tube about said generally horizontal axis, the improvement wherein said drive means comprises: an impact drive arm assembly mounted to said spray tube for rotation with respect thereto about said generally horizontal axis, said impact drive arm assembly including: a drive spoon disposed to intercept the path of one of said discrete water streams from one of said spray openings thereby to rotate said drive arm relative to said spray tube and move said drive spoon away from the path of said one stream; a spring means coupled between said drive arm and said spray tube, said spring means urging said drive spoon into the path of said one discrete water stream; impact means on said drive arm for impacting said spray tube to impart incremental rotation to said spray tube in one direction with each return of said drive spoon into the path of said one stream; and reverse drive means for causing said impact drive assembly to effect incremental rotation of said spray tube in a direction opposite to said one direction when a preselected limit of oscillation in said one direction of rotation has been reached, thereby to drive said spray tube in limited side-to-side oscillation relative to said base about said generally horizontal axis.