Patents by Inventor Andre J. Graffin

Andre J. Graffin 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).

  • Method and apparatus for heat-sealing lids on glass containers
    Patent number: 4297161
    Abstract: An apparatus for heat sealing composite lids, made of a laminate of a light ductile alloy coated with a layer of thermoweldable plastic material, on glass containers. The apparatus applies, under pressure, a flexible membrane onto said lid while disposed in position on the mouth of a glass container. The membrane is a simple sheet stretchingly supported by its outer periphery on a movably and hingedly supporting frame. The side of said membrane opposite said lid is subjected to a controlled heat flow, thus sealing the lid to the container.
    Type: Grant
    Filed: July 22, 1980
    Date of Patent: October 27, 1981
    Assignee: Serac
    Inventor: Andre J. Graffin