Patent ID: 7942347

Claim:
A sprinkler comprising: an oscillating mechanism including a receptacle for receiving water, a casing rotatably attached to said receptacle and rotate relative to said receptacle, said receptacle including a container having a partition and a board to form a compartment therein between said partition and said board; a first ratchet gear and a second ratchet gear rotatably received within said receptacle and rotating in different directions; said casing including two pawls selectively engaged with said first and said second ratchet gears respectively to allow said casing to be rotated relative to said receptacle in different directions by said pawls and said first and said second ratchet gear respectively; a barrel and a shaft rotatably received within said receptacle, and rotating in different directions, said first ratchet gear and said second ratchet gear being attached onto said barrel and said shaft respectively and rotating in concert with said barrel and said shaft respectively, said barrel and said shaft each including a first gear provided thereon, a paddle wheel rotatably received in said compartment in said container, said paddle wheel coupled to said barrel and said shaft for rotating said barrel and said shaft in different directions relative to said receptacle, said paddle wheel including a pinion secured thereon and rotating in concert therewith, a reduction gearing engaged with said pinion and engaged with said first gear of said shaft, and at least one idle gear engaged between said first gear and said barrel and said reduction gearing for allowing said barrel and said shaft to be rotated in different directions relative to said receptacle by said paddle wheel; and mean for controlling the water to flow through said shaft, said controlling means includes a valve opening formed in said shaft, and including a rotary member rotatably attached to said shaft and having at least one orifice formed in said rotary member for selectively aligning with said valve opening of said shaft and for intermittently allowing the water to selectively flow through said at least one orifice of said rotary member and said valve opening of said shaft and then to flow into a bore of said shaft, said rotary member including a second gear engaged with said reduction gearing for allowing said rotary member to be rotated by said reduction gearing and said paddle wheel, said rotary member including a rod extending therefrom, and said second gear disposed on said rod.