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Plastic container with a generally hemispherical bottom wall having hollow legs projecting therefrom

  • US 4,249,667 A
  • Filed: 10/25/1979
  • Issued: 02/10/1981
  • Est. Priority Date: 10/25/1979
  • Status: Expired due to Term
First Claim
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1. In a blow molded plastic container of the type comprising a tubular body terminating in a generally hemispherical outwardly convex bottom wall, said bottom wall being interrupted by a plurality of circumferentially spaced hollow legs with portions of said bottom wall disposed therebetween and terminating in a lower polar portion, said hollow legs terminating in lowermost supporting feet the improvement comprising said bottom wall in axial half cross-section between an adjacent pair of said legs being in part of a constant curvature and in part other than of a constant curvature and including a constant curvature curved line portion and an intermediate straight line portion wherein said bottom has a frustoconical segment.

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