Patents by Inventor Erik N. Sorensen

Erik N. Sorensen 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 of and apparatus for making casting moulds
    Patent number: 5355929
    Abstract: A mould chamber including at least one pressing plate is filled by blowing mould sand in through a blowing-in tube ascending at high speed, in which at least some of the blowing-in apertures are adapted to blow the sand in substantially transversely to the ascending movement of the blowing-in tube.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: October 18, 1994
    Assignee: Dansk Industri Syndikat A/S
    Inventor: Erik N. Sorensen