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Separator for cylindrical cells

  • US 20070082260A1
  • Filed: 11/05/2003
  • Published: 04/12/2007
  • Est. Priority Date: 11/05/2003
  • Status: Active Grant
First Claim
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1. A cylindrical separator for cylindrical cells, comprising a cylindrical body constituted by a layered structure of a plurality of turns of a first sheet material wound around a mandrel, and a bottom part closing a first end of said cylindrical body and being formed of an extended portion of said body past said first end by guided wet forming when said cylindrical body being rotated while being on said mandrel, and said bottom part being pressed and heat fused.

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