Patents by Inventor Arnoldus Goedhart

Arnoldus Goedhart 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).

  • Electromagnet
    Patent number: 4378547
    Abstract: When an electromagnet (2) is employed to lift and turn a slab of steel, there is a risk that the slab is dropped, causing undesirable noise. Also, with a flat contact surface of the electromagnet, there is jerking of the apparatus. Improvement in both respects is achieved by the use of a singly curved convex contact surface (7) of the electromagnet, which provides line contact with the slab at all times, avoiding transitions from line contact to face contact.
    Type: Grant
    Filed: September 17, 1980
    Date of Patent: March 29, 1983
    Assignee: Estel Hoogovens B.V.
    Inventors: Arnoldus Goedhart, Bernard van Rijn, Jan-Hendrik de Visser