Patent ID: 6622988
Filing Date: 2003-09-23
Classification: A45F,A47G

Abstract:
A mouthpiece for a hydration system designed for drinking liquids from that system, comprising:a body having an internal conduit passing through it, said internal conduit having a broad portion provided with a broad opening and a narrow portion provided with a narrow opening; a piston member having a distal portion and a proximal portion, said piston member provided with a passageway passing through it, the passageway having a first opening at said proximal portion and a second opening between said proximal portion and said distal portion, at least a portion of said piston member inserted in said conduit fitting inside said broad portion while said distal portion of said piston member is adapted to fit inside said narrow portion, said piston member adapted to coaxially move within said body, an O-shaped ring closely encircling said distal portion of said piston member; wherein said piston member can move between two positions, a first closed position preventing passage of liquid through said mouthpiece, in which said distal portion fits inside said narrow portion while pushing said O-shaped ring opposite said narrow portion so as to sealingly block passage of liquid through said passageway, and a second open position allowing passage of liquid through said mouthpiece, in which said piston member is coaxially retracted outwardly from said narrow portion allowing passage of liquid through said second opening into said passageway; whereby said narrow opening of the body acts as the inlet of said mouthpiece and said first opening in said piston member acts as the outlet of said mouthpiece.