Patents by Inventor Joseph B. Havrill

Joseph B. Havrill 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).

  • Film changer having film-receiving, nondriven cassette with spiral-shaped guide plate
    Patent number: 5263077
    Abstract: An x-ray film changer includes a removably mounted, passive-type cassette having no film driving mechanism and comprising a film-receiving spiral guide plate extending within the cassette in excess of one and one-half 360.degree. turns. The cassette further comprises an anvil bar for reverse bending of the guide plate when the cassette is opened, to facilitate film removal, a light-blocking gate which uncovers a film feed-in slot in response to mounting of the cassette on a film exposure device, and a combination carrying handle-latch mechanism.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: November 16, 1993
    Assignee: Medrad, Inc.
    Inventors: Kevin P. Cowan, Bruno Fazi, Jr., Joseph B. Havrill, Stanley R. Lewandowski, David M. Reilly