Patents by Inventor James Dudley Haaser

James Dudley Haaser 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).

  • Methods for forming lines of weakening in closures
    Patent number: 5809860
    Abstract: A line of weakening (24) formed of spaced bridges (44) separated by slits (42) is formed in the skirt of a temperevident closure after the closure has been moulded. The line of weakening (24) is formed by a cutting operation using a knife blade (32) along the edge of which the closure is rolled without slipping. During the operation the snap-engagement band (20) of the closure is held in contact with the interior face of the skirt in transverse alignment with the knife blade (34) and the location of the line of weakening (24).
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: September 22, 1998
    Assignee: Crown Cork & Seal Technologies Corporation
    Inventor: James Dudley Haaser