Mask vent

Mask vent

  • CN 101,380,497 B
  • Filed: 08/25/2008
  • Issued: 05/29/2013
  • Est. Priority Date: 08/24/2007
  • Status: Active Grant
First Claim
Patent Images

1. blow vent device that is used for face shield comprises:

  • Mask part;

    WithBe arranged at the abat-vent on the described mask part, this abat-vent comprises base wall and from the upwardly extending dome of base wall or bossing, this dome or bossing comprise sidewall, are provided with a plurality of passages altogether radially separately to discharge air-flow at least 90 °

    the part along this sidewall.

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