초록 ▼

An oscillating sprinkler comprises a fixed base assembly (12) and an upper housing (14) from which water distributing arms (16, 18, 20, 22) extend. A bearing member (66) depends from the upper housing (14) and is seated within the base assembly (12). An upper surface (26) of the base housing (12) co

An oscillating sprinkler comprises a fixed base assembly (12) and an upper housing (14) from which water distributing arms (16, 18, 20, 22) extend. A bearing member (66) depends from the upper housing (14) and is seated within the base assembly (12). An upper surface (26) of the base housing (12) comprises an undulating cam surface and bend portions (110) of the arm members act as cam followers. Bend portions (110) engage cam surface (26) and cause a reciprocal tilting of the upper housing (14) about the bearing member (66) as the upper housing (14) rotates about the base assembly (12). Water ejected from orifices (114) in the arm members (16, 18, 20, 22) act to propel the upper housing along its rotational path. A cap member (144) is rotationally mounted to the top of the upper housing (14) and pressurized water ejected through orifices (148) in the cap member (144) act to rotate the cap member in a direction opposite to the direction in which the upper housing rotates.

대표청구항 ▼

[ We claim:] [1.] A sprinkler comprising:a support base member;an upper housing rotationally mounted to a top surface of the base member and tilting into variable angular attitudes relative to a vertical axis of rotation as the upper housing rotates about the base member;a liquid chamber in the uppe

[ We claim:] [1.] A sprinkler comprising:a support base member;an upper housing rotationally mounted to a top surface of the base member and tilting into variable angular attitudes relative to a vertical axis of rotation as the upper housing rotates about the base member;a liquid chamber in the upper housing for receiving liquid from an external source; the upper housing comprising at least one elongate arm member rigidly connected at one end to the upper housing and projecting therefrom, the arm member comprising an internal liquid passageway communicating with the liquid chamber and receiving liquid therefrom, and at least one outlet orifice extending through an outer wall of the arm member in communication with the liquid passageway and expelling liquid received therefrom through the orifice; andthe arm member rotates and tilts unitarily with the upper housing, and the arm member comprises actuation means for tilting the upper housing as the arm member rotates, whereby varying the arm member angle of projection relative to the vertical axis of rotation.