Patents by Inventor Arthur H. Walker

Arthur H. Walker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Airway adapter
    Patent number: 4852583
    Abstract: A tubular airway adapter having a hollow interior and a cylindrical wall for providing a sample gas air flow. The adapter includes an annular channel in the cylindrical wall and a plurality of radial channels extending from the annular channel to the interior. The annular channel is in fluid communication with ambient atmosphere through a port in the cylindrical wall. The wall of the adapter increases in thickness from on either side of the annular channel towards the annular channel to provide a double conically shaped interior and a wall region which protrudes into the interior at the location of the annular channel.
    Type: Grant
    Filed: January 16, 1987
    Date of Patent: August 1, 1989
    Assignee: SpaceLabs, Inc.
    Inventor: Arthur H. Walker