Innerspring coils and innersprings with non-helical segments

  • US 7,404,223 B2
  • Filed: 02/20/2007
  • Issued: 07/29/2008
  • Est. Priority Date: 08/28/2004
  • Status: Expired due to Fees
First Claim
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1. An innerspring having a plurality of wire coils interconnected in an array, each of the wire coils having a generally cylindrical body with two or more helical turns of wire which form a helical path about a longitudinal axis of the coil, the coil body terminating at opposed axial ends,a coil end at each axial end of the coil body, each coil end oriented in a plane which is generally perpendicular to the longitudinal axis of the coil, and a step which extends between one of the coil ends and the coil body and which does not follow the helical path of the coil body;

  • wherein the each of the coil ends have at least one linear segment, and further comprising a lacing wire which extends between coils and is engaged with linear segments of the coil ends.

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