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Flexible bottom containers

  • US 4,046,277 A
  • Filed: 09/24/1975
  • Issued: 09/06/1977
  • Est. Priority Date: 09/24/1975
  • Status: Expired due to Term
First Claim
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1. An enclosed solid four-sided cargo container comprising:

  • a top,a bottom,a first set of two rigid opposing walls attached to said top and bottom providing support for the top,a second set of two opposing walls attached to the top and to the bottom comprising distortable pleats which vary in width, said pleats having their greatest width at the center of the wall, the width of the pleats decreasing in both directions toward the side edge of the wall to zero depth, providing a flat surface at the edge of the wall, said pleats orientated parallel to the bottom to impart pliability to said second set of walls in a direction perpendicular to said bottom, whereby said walls permit incremental flexure of the bottom of the container along the line of contact between the second set of walls and the bottom of the container.

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