Patents by Inventor Thomas E. Eaton

Thomas E. Eaton 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).

  • Pressurized cartridge for a writing instrument
    Patent number: 4498797
    Abstract: A writing instrument cartridge contains a loose fitting ball follower disposed within the cartridge between an end of a column of paste like ink exhibiting a yield value, and compressed gas contained in a sealed end of the cartridge. The ball follower is adapted to help peel the ink from the tube walls without contact and to prevent the gas from channeling through the ink and escaping from the cartridge past a ball point or nib during writing.
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: February 12, 1985
    Assignee: The Gillette Company
    Inventors: Henry Peper, Thomas E. Eaton, Edward J. Ferguson