Patents by Inventor Thomas Luoma

Thomas Luoma 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).

  • Graphic recorder
    Patent number: 4477822
    Abstract: A graphic recorder of the vacuum column buffer type has a pair of wells into which the two loops on the sheet material are drawn down. Top and bottom sensors are provided in each well for maintaining the loops within a predetermined range of movement; but in addition, the supply and take-up rolls are slaved to the speed of the drum. Cross-coupling is provided between the two wells to tend to equalize the vacuums therein.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: October 16, 1984
    Assignee: Nicolet Zeta
    Inventors: Thomas Luoma, Alan Rutherford