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Inflatable head harness with hearing device placement

  • US 5,771,886 A
  • Filed: 08/11/1997
  • Issued: 06/30/1998
  • Est. Priority Date: 08/12/1996
  • Status: Expired due to Term
First Claim
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1. Fast donning breathing apparatus, comprising:

  • a mask provided with a regulator arranged for connection to a source of pressurized breathable gas; and

    a harness having at least one stretchable strap whose ends are attached on the mask and including an inflatable element, andmeans connectable to a source of pressurized breathable gas and manually controllable to admit a pressurized breathable gas to the inflatable element to extend said stretchable strap up to a large size and to discharge said pressurized breathable gas from said inflatable element to decrease the size of said stretchable strap and to enable the strap to tighten and to bias the mask onto a face of wearer; and

    at least one ear piece secured to the harness or to the mask by means arranged for applying it against the auditory track or around the ear with a sufficient pressure for correct hearing, when the harness straps are deflated.

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