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Headgear for patient interface

  • US 10,080,856 B2
  • Filed: 08/08/2013
  • Issued: 09/25/2018
  • Est. Priority Date: 08/08/2012
  • Status: Active Grant
First Claim
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1. A mask and headgear system comprisinga mask, the mask comprising a frame and a seal supported by the frame,headgear connected to the mask, anda break-fit assembly configured to elongate upon the application of a force exceeding a preselected force, the mask, headgear, and break-fit assembly together defining a loop that elongates with forces that exceed the preselected force, the break-fit assembly including a stretch portion;

  • wherein the break-fit assembly comprises a first portion and a second portion that are movable relative to one another from a resting position to an elongated position, wherein a length of the loop is longer in the elongated position than the resting position,wherein the break-fit assembly is configured to have a coupling force tending to secure the first portion and the second portion in the resting position, the coupling force acting in an elongation direction of the loop,wherein the stretch portion provides a restoration force that acts to return the first and second portions toward each other a distance which allows a magnetic attraction force between the first and second portions to act to secure the first and second portions together.

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