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Device for spraying a liquid

  • US 9,750,965 B2
  • Filed: 06/27/2013
  • Issued: 09/05/2017
  • Est. Priority Date: 06/29/2012
  • Status: Active Grant
First Claim
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1. A spray device for spraying a liquid, the device comprising:

  • a tank containing the liquid for spraying;

    at least one liquid ejector member in communication with the tank; and

    a pyrotechnic gas generator for pressurizing the liquid inside the tank and propelling it under pressure out from the tank;

    wherein in at least one mode of operation, the ejector member is in communication with the gas generator in such a manner as to enable it to be fed directly with the gas generated by the gas generator;

    wherein the gas generator has a first gas generator unit having a first combustion chamber housing at least one first pyrotechnic charge, and a second gas generator unit having a second combustion chamber housing at least one second pyrotechnic charge, the first gas generator unit being arranged in such a manner that the gas generated in the first combustion chamber acts on the liquid to pressurize it and to propel it out from the tank, and the second gas generator unit being arranged so that, in at least one mode of operation, the gas generated in the second combustion chamber directly feeds the liquid ejector member,wherein the pyrotechnic gas generator includes a first ignitor adapted to fire the first pyrotechnic charge, and a second ignitor adapted to fire the second pyrotechnic charge independently of the first.

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