ApplicationNo. 06/018290 filed on 03/06/1979
US Classes:220/723, Internal bladder-like bag for contents220/216, Floating closure220/225Fluid filled gasket
ExaminersPrimary: Lowrance, George E.
International ClassesB65D 90/22 (20060101)
B65D 90/38 (20060101)
Foreign Application Priority Data1978-03-15 GB
AbstractLiquid storage tank containing a collapsible bag of flexible impervious sheet material supported by a collar within the tank which floats on the stored liquid and moves with the liquid thereby dividing the interior of the shell into an air and a liquid space. The bag has an external skirt of a similar flexible sheet material attached to the supporting collar which lies between the bag and adjacent tank side walls to reduce abrasion and catching of the bag and tank walls particularly during tank emptying and filling procedures.