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Respiratory humidifier

  • US 3,982,095 A
  • Filed: 10/04/1973
  • Issued: 09/21/1976
  • Est. Priority Date: 10/04/1973
  • Status: Expired due to Term
First Claim
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1. A respiratory humidifier comprising a base, a heater mounted on said base and having a first heat transfer surface, a container having a second heat transfer surface complementary to said first heat transfer surface, means associated with said base and said container for urging said first heat transfer surface and said second heat transfer surface substantially into abutment, means on said container for admitting liquid to the interior thereof at a lower location near said second heat transfer surface, means for establishing a predetermined liquid level in said container, means on said container for admitting gas to the interior thereof at a location near said second heat transfer surface and below said liquid level, means on said container for releasing gas therefrom at an upper location remote from said second heat transfer surface and above said liquid level, and a pad in and extending substantially completely across said container and disposed between said lower location and said upper location, said pad being permeable throughout to said liquid and to said gas and providing an extended surface for wetting by said liquid and said pad having an upper surface substantially coincident with said liquid level.

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