Patents by Inventor David Upfal

David Upfal 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).

  • Publication number: 20170145679
    Abstract: The invention provides in a broadest aspect a system of connectors for connecting to metal C-channel members (200, 250, 300) in building construction, the C-channel members (200, 250, 300) having a channel formed by web (203, 255, 303) and opposed flange surfaces (201, 202, 251, 252, 301, 302) the system comprising a plurality of connectors (100), of one or more connector types, the connectors being of a rigid block composition, at least a first connector type being sized and shaped to join together the C-channel members (200, 250, 300) in more than one relative orientation, the first connector type comprising one or more holes (110, 105, 111, 109, 106, 113, 150, 133) on one or more faces for fastening the connector to the C-channel members and to other connectors.
    Type: Application
    Filed: June 30, 2015
    Publication date: May 25, 2017
    Inventor: David Upfal