Patents by Inventor Dan O. Ray

Dan O. Ray 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).

  • Automatic cassette cleaner
    Patent number: 4272796
    Abstract: The device for automatically cleaning operating parts of a cassette tape deck is provided. The apparatus is enclosed in the frame of a standard cassette. Tape head cleaning is accomplished by a cleaning pad reciprocally moved across the tape head. An arm on which the pad is located is driven by cams powered by the take-up spindle of the tape deck. Capstan and pinch roller cleaning occurs when a second cleaning pad is spring biased against them as they turn. Solvents can be added to the cleaning pads to dislodge deposits.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: June 9, 1981
    Assignee: Kraco Enterprises, Inc.
    Inventors: Rudolf Van Kreuningen, Dan O. Ray