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Techniques for pitch densification

  • US 8,721,954 B2
  • Filed: 03/13/2013
  • Issued: 05/13/2014
  • Est. Priority Date: 11/02/2010
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • inserting a material to be densified into a mold, wherein the mold is part of an apparatus including;

    a ram configured to apply a ram pressure sufficient to force a pitch into the mold to densify the material,a gas source configured to apply a gas pressure sufficient to force the pitch into the mold to densify the material, anda vacuum source operable to create a vacuum pressure in the mold at least prior to application of either the ram pressure or the gas pressure; and

    densifying the material in the mold via pitch using a selectable one of the ram, the gas source, the ram and the vacuum source, or the gas source and the vacuum source.

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