Patents by Inventor Raymond Murray Felson

Raymond Murray Felson 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).

  • Non collapsing pre-assembled flexible duct connector
    Patent number: 5948509
    Abstract: A continuous length of pre-assembled, metal-to-fabric-to-metal stock material for fabricating custom-made, flexible duct connectors of any diameter which incorporate a structural means for minimizing the risk of inward collapse of a fabric strip when the fabric strip is subjected to considerable negative air pressure due to installation between a duct and an inlet of an axial flow fan or blower.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: September 7, 1999
    Inventor: Raymond Murray Felson