Patents by Inventor Joseph A. Bronec

Joseph A. Bronec 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: 4157693
    Abstract: A method and apparatus for forming a seamless container having a sidewall and an integral end wall with opening means in the integral end wall is disclosed herein. The method contemplates forming at least one substantially closed area of reduced thickness in the end wall to produce a fracturable web that defines an opening means during the conversion of a flat disc to a finished container. In one form, the method contemplates initially forming a shallow cup and then forming the opening means in the end wall of the shallow cup before the cup is converted into a drawn and ironed container. In another form, the opening means is formed while the container end wall is being reformed into its final configuration and in a further version, the end opening means is formed in the end wall after completion of the drawing and ironing process. The finished container includes a reformed end wall that is integral with a circular sidewall of a container and has a fracturable web surrounding a protuberance.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: June 12, 1979
    Assignee: National Can Corporation
    Inventors: Richard A. Openchowski, Joseph A. Bronec