Patents by Inventor Piers Antony James

Piers Antony James 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).

  • Diaphragm valve for a respirator
    Patent number: 7882836
    Abstract: A diaphragm valve is provided, in which there is improved sealing of a closing cover (15) against the valve housing (3). The seal includes a cylindrical sealing washer (25), which is connected to the valve housing (3) in one piece and into which a cylindrical wall section (18) of the closing cover (15) can be inserted with press fit.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: February 8, 2011
    Assignee: Dräger Medical GmbH
    Inventors: Brian Hewitt, Piers Antony James