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Method for making an anatomical multilayer bicycle-type seat

  • US 4,999,068 A
  • Filed: 11/14/1988
  • Issued: 03/12/1991
  • Est. Priority Date: 02/24/1986
  • Status: Expired due to Fees
First Claim
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1. A method for constructing an anatomical multi-layer bicycle-type seat having a lower rigid shell, a flexible outer cover sheet, and an encapsulated gel layer located between said shell and said outer cover sheet, the method comprising the steps of:

  • (a) providing an upper surface of a formed relatively rigid lower shell as a first mold surface;

    (b) providing a rigid shaped object having a desired upper surface shape of said seat as a second mold surface;

    (c) forming a mold cavity with said first and second mold surfaces;

    (d) forming a cured foam or rubber-like material layer in said mold having a central cavity;

    (e) including a soft resilient gel layer in said central cavity so as to engage at least two lateral edges of said gel layer to constrain the gel layer against substantial lateral movement; and

    (f) placing a flexible cover sheet over said foam and gel layers after separating said mold surfaces and attaching said cover sheet firmly onto the periphery of said shell, whereby said gel layer is constrained against substantial lateral movement and is permitted only limited vertical deflection.

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