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Vehicle seat assembly having a hardness gradient

  • US 7,934,774 B2
  • Filed: 03/31/2006
  • Issued: 05/03/2011
  • Est. Priority Date: 03/31/2006
  • Status: Active Grant
First Claim
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1. A vehicle seat assembly comprising:

  • a cushion having a top surface, a bottom surface, spaced from the top surface, a left side outer surface and a right side outer surface, with each outer surface extending between and connecting the top and bottom surfaces, the cushion further having a central portion extending between the top and bottom surfaces, and two bolster areas extending between the top and bottom surfaces, with each bolster area being laterally spaced from each other and laterally adjacent to opposed sides of the central portion such that the central portion extends laterally between the two bolster areas and the bolster areas each including a respective one of the outer surfaces, the central portion having at least one recess therein, the cushion having a hardness gradient between at least one of the bolster areas and the central portion of between 8% to 25% and the cushion having a hysteresis loss gradient between at least one of the bolster areas and the central portion of at least 8%, and wherein the at least one bolster areas has a hardness that is at least 8% to 25% greater than the hardness of the central portion and wherein hardness is a resistance measurement and hysteresis loss is a recovery measurement.

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