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Workpiece holder with a multi-piece bladder

  • US 7,331,583 B1
  • Filed: 12/22/2004
  • Issued: 02/19/2008
  • Est. Priority Date: 12/22/2004
  • Status: Active Grant
First Claim
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1. A workpiece holding apparatus comprising:

  • a body;

    a bladder carried by said body, where said bladder and said body at least partially define a fluid chamber therebetween for containing a fluid therein, said bladder comprising;

    at least one first polymer-containing section composed of a first polymer-containing material;

    at least one second polymer-containing section disposed adjacent an end of said first polymer-containing section and composed of a second polymer-containing material that is less flexible than said first polymer-containing material; and

    a sleeve carried by said bladder;

    wherein said at least one first polymer-containing section of said bladder is constructed to engage said sleeve upon said fluid in said fluid chamber being pressurized.

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