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Pressure detection method and device

  • US 5,792,959 A
  • Filed: 05/06/1996
  • Issued: 08/11/1998
  • Est. Priority Date: 05/06/1996
  • Status: Expired due to Fees
First Claim
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1. A device for detecting the pressure changes of a pressurized vessel, comprising:

  • means disposed on an outside surface of the pressurized vessel for indicating the pressure in the vessel, said means comprising at least two reference marks spaced apart on the surface by a predetermined distance; and

    wherein said predetermined distance can be measured at intervals, and correlated to determine the pressure of the vessel.

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