A sprinkler includes a handle, a nozzle, and a connection structure for connecting the nozzle to the handle. The connection structure has an extension pipe and a connection member. The extension pipe is formed of an outer tube fastened at a bottom end to the handle, and an inner tube fastened at a top...http://www.google.fr/patents/US6913211?utm_source=gb-gplus-shareBrevet US6913211 - Connection structure of a nozzle and extension pipe of a sprinkler
Connection structure of a nozzle and extension pipe of a sprinkler
