Method for production of safety/rupture discs

  • US 8,674,260 B2
  • Filed: 07/21/2011
  • Issued: 03/18/2014
  • Est. Priority Date: 06/18/2007
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for production of a safety/rupture disc, comprising the steps of:

  • providing a foil element of metal material having a thickness within the range of between 15 μ

    m and 800 μ


    selecting a wavelength for a laser beam of a pulse laser within a range of between 800 nanometers and 1800 nanometers;

    selecting a pulse repetition rate for the laser beam within a range of between 15 KHz and 800 KHz;

    selecting a pulse duration for the laser beam within a range of between 10 femtoseconds and 900 femtoseconds and ablating at least one non-through cut in the metal material of the foil element by directly applying said laser beam to the foil element to remove part of the metal material from the foil element thereby obtaining the safety/rupture disc.

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