Patents by Inventor Barry W. Raatz

Barry W. Raatz 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).

  • Coupling device for attaching a hose to ductwork
    Patent number: 5901985
    Abstract: A duct hose coupling device for attaching a hose to a ductwork structure. The device selectively attaches and detaches the hose without use of fastening hardware. Attachment of a hose via the duct hose coupling device allows air to be efficiently forced into or withdrawn from the ductwork structure. The device retains its high efficiency over prolonged periods of usage by isolating critical moving components from exposure to contaminants and unwanted debris.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: May 11, 1999
    Inventor: Barry W. Raatz