Patent ID: 7226000

Claim:
A sprinkler comprising: a housing disposed on a base, an oscillating mechanism engaged in said housing, and a sprinkler tube coupled to said oscillating mechanism, for allowing said sprinkler tube to be rotated relative to said housing and said base by said oscillating mechanism, said oscillating mechanism including a receptacle disposed within said housing, a casing rotatably attached to said receptacle, and coupled to said sprinkler tube, for allowing said casing and said sprinkler tube to be rotated relative to said receptacle, a first ratchet gear and a second ratchet gear rotatably received within said receptacle, and rotated in different directions, and said casing including two pawls selectively engaged with said first and said second ratchet gears respectively, to allow said casing and said sprinkler tube to be rotated relative to said receptacle in different direction by said pawls and said first and said second ratchet gears respectively.