Patent ID: 6808129
Filing Date: 2004-10-26
Classification: B05B,Y10S

Abstract:
A spraying device for a lawn sprinkler, comprising:a circular base, a coupling disc, a rotary sprinkling cover, a central flexible control piece and a water splattering blade assembly; wherein said circular base has a water outlet seat protruded at the center thereof with a fixing cavity for registration with a hollow retaining post of said coupling disc; a protruded melting ring line on said coupling disc permits said coupling disc to be fixed to said rotary sprinkling cover by ultrasonic welding art so as to divide a space inside said rotary sprinkling cover into an internal and external space; at the center of said rotary sprinkling cover is disposed a concealing cavity having a downward tubular extension; said central flexible control piece has a positioning member, a spring, a support member, a seal ring and a water discharge cap; said positioning member has a round stop disc and a downwardly extended pole having a central through hole defined thereon; said support member has retaining cylinder having a through hole defined at a center and a round limiting disc at a base; said discharge cap has a plurality of pores on the periphery with a central fixing hole for engagement with a shaft pin of said blade assembly; whereby said blade assembly can be concealed in said concealing cavity of said rotary sprinkling cover when not in operation and is pushed by a controlled water flow out of said concealing cavity.