Patexia. Research
Issue Date Feb 16, 2012
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Patent Application - PROTECTIVE SUIT FOR AN INDIVIDUAL AND RELATED ASSEMBLY > Claims

  • 1. Personal protective suit comprising: a sealed outer shell equipped with connection means intended to be connected to a pressurized air source,means for air distribution having an air intake connected to the connection meansat least one first and one second air outlet, respectively intended to feed means for delivering breathable air to the wearer andmeans for ventilating the suit,wherein the air distribution means comprise a valve reacting to air pressure at the air intake to reduce a rate of air flow of the second air outlet towards the suit when the air pressure at the air intake is below a determined value, whilst maintaining a supply of breathable air to the wearer.
    • 2. The suit according to claim 1, the valve is designed such that the air flow rate in the second air outlet decreases progressively with the air pressure at the air intake.
    • 7. A personal protective ensemble comprising means for delivering air to the wearer, equipped with an air supply line, comprising a protective suit according to claim 1, the air supply line being connected to the first air outlet of the distribution means.
      • 9. The protective ensemble according to claim 7, wherein the means for delivering air to the wearer comprise a mask or a hood delimiting an inner volume fed with air.
      • 10. The protective ensemble according to claim 7, wherein the suit comprises a release valve arranged to allow release of the air contained inside the suit when the pressure of this air exceeds a determined pressure value.
      • 11. The protective ensemble according to claim 7, wherein the suit comprises a removable band which, after removal, is capable of releasing an opening intended to facilitate stepping out of the suit.
      • 12. The protective ensemble according to claim 7, wherein the suit is equipped with at least one ventilation duct connected to the second outlet of the distribution means, and designed to direct part of the pressurized air into the inner volume of the suit.
  • 3. The suit according to either of claims 1, wherein the valve comprises a shutter which, cooperating with a return spring, is designed to shut off all or part of the second air outlet, in relation to the air pressure at the air intake.
    • 4. The suit according to claim 3, wherein the air distribution means comprise a body in which there are arranged a first channel forming the air intake, a second channel connected to the first channel and forming the first air outlet, and a third channel forming the second air outlet and leading into the first channel at a calibrated opening, the shutter and the return spring being arranged such that the shutter is applied against the calibrated opening if there is no air pressure in the first channel, the shutter being progressively moved away from the opening when the air pressure in the first channel exceeds a predetermined value.
      • 5. The suit according to claim 4, wherein the channels connected to the air outlets for the supplying of air to the wearer and for ventilating the suit are equipped with flow regulators.
        • 6. The suit according to claim 5, wherein each flow regulator comprises a piston which, housed in a channel, is subjected to action of a spring, to modify the cross-section of the air passage in relation to the pressure.
          • 8. The protective ensemble according to claim 6, wherein the air supply line comprises a first and a second air intake, the first air intake being connected to the first air outlet of the distribution means in position of normal use, the second air intake of the supply line being intended to be connected to a secondary source of compressed air.