Patents by Inventor Johan De Waegenaere

Johan De Waegenaere 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: 5592806
    Abstract: A steel cord (10) adapted for the reinforcement of elastomeric articles including a center structure of one to five center filaments (16) and a maximum of two layers of layer filaments surrounding said center structure: an outer layer of outer layer filaments (12, 13) and optionally, an intermediate layer of intermediate layer filaments (24) between the center structure and the outer layer. All the center filaments (16) and all the layer filaments (12, 13, 24) have the same twist hand and have the same twist pitch. The outer layer filaments (12, 13) exert a force which is directed radially inward.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: January 14, 1997
    Assignee: N.V. Bekaert S.A.
    Inventors: Joost Berghmans, Johan De Waegenaere, Pierre Klingeleers, Frans Van Giel
  • Patent number: 5487262
    Abstract: A steel cord, having steel filaments twisted so as to have a final twist pitch, is manufactured by plastically deforming the steel filaments by overtwisting the steel cord to a twist pitch which is smaller than the final twist pitch, untwisting the steel cord to the final twist pitch, further untwisting the steel cord to a twist pitch which is greater than the final twist pitch, and twisting the steel cord again to the final twist pitch. The first two steps (i.e., overtwisting and untwisting) are done under a first tension and the third and fourth steps (i.e., further untwisting and twisting) are done under a second tension which is lower than half of the first tension.
    Type: Grant
    Filed: April 7, 1994
    Date of Patent: January 30, 1996
    Assignee: N.V. Bekaert S.A.
    Inventors: Johan De Waegenaere, Luc Sabbe, Frans Van Giel