Accession Number : ADD007767

Title :   Thermally Sensitive Pressure Release Assembly for Sealed Pressurized Vessel.

Descriptive Note : Patent,


Personal Author(s) : Roberts,Roy D ; Lavering,Gordon R

Report Date : 01 Apr 1980

Pagination or Media Count : 5

Abstract : A pressure release assembly provides controlled depressurization of a sealed gas-containing vessel, such as a xenon-filled arc lamp, when the temperature of the gas in the vessel reaches a value corresponding to a selected pressure. The assembly comprises a thin metallic rupture plate that hermetically seals an aperture in a wall of the vessel, and a back-up disc that is supported adjacent the other surface of the rupture plate. The back-up disc reinforces the rupture plate so as to prevent bursting of the rupture plate at pressures below the selected pressure. The back-up disc is made of a material that loses its tensile strength at the temperature corresponding to the selected pressure, whereby the weakening of the back-up disc at the selected pressure causes the rupture plate to burst. The back-up plate may be made of a eutectic alloy that melts at the temperature corresponding to the selected pressure. (Author)

Descriptors :   *Patents, *Arc lamps, *Seals(Stoppers), *Release mechanisms, *Pressure vessels, Xenon, Metal plates, Rupture, Hermetic seals, Disks, Inventions, Tensile properties, Eutectics, Thermal properties, Apertures, Inventions

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Containers and Packaging

Distribution Statement : APPROVED FOR PUBLIC RELEASE