Liquid container system

  • US 5,433,347 A
  • Filed: 06/29/1994
  • Issued: 07/18/1995
  • Est. Priority Date: 12/17/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. An article comprising:

  • (a) a two layer liquid container including a wall, a container opening at a top end of said container for filling and evacuating said container surrounded by a container neck, and a plurality of air vents extending partway through said wall;

    (b) said wall consisting of a main, outer, blow molded PET plastic layer and a separate, delaminatable inner blow molded PET plastic layer such that said inner layer can separate from said main layer when liquid is evacuated by suction from said container and air flows in through said air vents; and

    (c) said air vents extending completely through said main layer and terminating at said inner layer and said air vents being permanently open to atmosphere, such that air can flow through said air vents and in between said inner and main layers as liquid is withdrawn by suction from said container.

View all claims

    Thank you for your feedback