Patents by Inventor Kurt A. Krischke

Kurt A. Krischke 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: 6082567
    Abstract: A container, preferably of small capacity, such as a school milk plastic bottle, has a neck having an in-turned lip flange, a vertical surface spaced below the lip flange and an external shoulder below the vertical surface. A second external shoulder below the first-mentioned shoulder is preferably slanted upwardly-outwardly. A cap for the neck has a top and a skirt depending from the top formed with internal bead segments which snap under the first mentioned shoulder. The lower edge of the skirt fits tightly against the second shoulder to prevent the fingernails from being used to overcome the tamper-evident feature of the cap. A tear tab (preferably chevron-shaped in cross-section) depends from the skirt. An external, vertical scoreline adjoins the tab and at its upper end is adjacent a second scoreline which is formed on the interior of the top. Pulling the tab tears the skirt from the top for about 342.degree. of its circumference.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: July 4, 2000
    Assignee: Portola Packaging, Inc.
    Inventors: Steven H. Bietzer, Kurt A. Krischke, Richard E. Repp
  • Patent number: 5975320
    Abstract: A tamper-evident closure and container neck. The closure has a top and a skirt depending from the top having at least one engagement member on the interior of the skirt which cooperates with at least one engagement member on the neck to retain the closure on the container neck. The closure includes a tab to facilitate removal of the closure from the container neck. The tab includes a longitudinal axis and wall portions extending outwardly from the axis and terminating in a plane spaced from the longitudinal axis for reinforcing the tab. Frangible sections prevent removal of the cap from the neck so long as the frangible sections are intact.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: November 2, 1999
    Assignee: Portola Packaging, Inc.
    Inventors: Steven H. Bietzer, Kurt Krischke, Daniel Luch, Richard E. Repp