Patents by Inventor William F. Boulay

William F. Boulay 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).

  • Filling apparatus
    Patent number: 5222529
    Abstract: An apparatus for filling finely powdered material into a long and narrow cavity or hole having a relatively small opening is provided. The apparatus features a discharge port for a particulate laden gas stream directed toward the opening of the hole to be filled but spaced apart from the opening of the cavity to be filled by a gap, so that in operation the powdered material continues across the gap and into the cavity due to its inertia while the gas escapes through the gap.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: June 29, 1993
    Assignee: American Cyanamid Company
    Inventors: Bart J. Zoltan, William F. Boulay, Donald R. Miller