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Container with concertina side walls and base

  • US 8,328,043 B2
  • Filed: 12/23/2005
  • Issued: 12/11/2012
  • Est. Priority Date: 12/23/2004
  • Status: Expired due to Fees
First Claim
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1. A container having an upper portion and a lower portion comprising:

  • a containment region including at least one side wall, a basal wall and at least one pair of opposed regions of said side wall extending from said basal wall;

    an upper opening at least partially surrounded by a flange disposed at an end of said at least one side wall distal from said basal wall;

    a plurality of pre-formed features reducing resistance to compression of said lower portion compared to said upper portion configured to accommodate substantially complete buckling of said basal wall to bring said opposed regions of said side wall substantially adjacent one another upon squeezing of said opposed regions of said side wall; and

    said pre-formed features including at least one surface relief on said basal wall and a region of concertina in said side wall.

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