Patents by Inventor Wilbern F. Davis

Wilbern F. Davis 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).

  • Matrix printhead apparatus
    Patent number: 4320981
    Abstract: An improved wire matrix ballistic impact printhead apparatus including a plurality of engaging structures for maintaining the armatures of a like plurality of electromagnetic actuators in proper positional alignment with the associated print style, for allowing individual adjustment of armatures to optimize printhead operation, for preloading the armatures with a force that will return them to their original position after the printing operation, and for damping vibrations at printhead operating frequencies.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: March 23, 1982
    Assignee: Data General Corporation
    Inventors: Michael Harrison, Wilbern F. Davis