Patents by Inventor Edgar D. Smith

Edgar D. Smith 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).

  • Patent number: 4701090
    Abstract: A method of manufacturing can ends having a push down vent tab and a push down main tab, with recessed score lines under a double folded ridge of metal, where part of the score lines are broken to facilitate opening the cans. The method of manufacture uses six stations to make the can ends. One station to bubble the surface of the can end. One station to reform the bubble into a side wall and a flat bottom having a raised vent button and a raised tab button. One station for scoring the vent score line and forming the bend ridge. One station for scoring the main score around the main tab. One station for folding the side walls. And one station for depressing the area around the folded side walls and for stenciling the top of the can end. The last step in the manufacture of the can end is to spray a sealant material on the bottom of the can end.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: October 20, 1987
    Assignee: Jerone Technologies, Inc.
    Inventor: Edgar D. Smith