Patent ID: 7819381

Claim:
A connector to be attached to a liquid tank for delivery of its internal liquid, comprising: said connector is constructed of a plug fixedly mounted on said tank and a socket connected with said plug; said plug is provided with: a cup-shaped body having a fitting means for fixing to said tank; a plug tube which has an engagement means engaged with said socket and is vertically provided in a central area of a concave portion of said cup-shaped body with a gap at said plug tube's surrounding area; a liquid passage and a gas passage formed in said cup-shaped body to vertically pass through said plug tube; a siphon tube, being a unified portion of said cup-shaped body, integrally formed from the bottom of said cup-shaped body to communicate with the liquid passage; and said socket is provided with: an engagement means engaging with said plug portion; a valve unit; a liquid passage communicated with said liquid passage of said plug tube and a liquid passage connecting piece communicated with said liquid passage of said socket; and a gas passage communicated with said gas passage of said plug tube and a gas passage connecting piece communicated with said gas passage of said socket.