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Rupture disk assembly

  • US 6,446,653 B2
  • Filed: 06/26/2001
  • Issued: 09/10/2002
  • Est. Priority Date: 05/13/1999
  • Status: Expired due to Term
First Claim
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1. A rupture disk to be sealingly engaged with a pressurized system, comprising:

  • an annular flange; and

    a rupturable portion configured to reverse when exposed to a fluid having a predetermined pressure, the rupturable portion having a domed shape with a convex surface and a corresponding concave surface and an indentation disposed at the apex of the dome, the indentation including an annular crease formed in at least one of the concave and convex surfaces, wherein reversal of the rupturable portion initiates at a point along the annular crease.

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