Patents by Inventor Michel E. A. Vanhelle

Michel E. A. Vanhelle 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).

  • Process and apparatus for spinning cored filaments, and cored filaments thus obtained
    Patent number: 4495760
    Abstract: Fiber sheaths are drawn between a pair of drawing cylinders and continuous filaments are introduced upstream of the drawing cylinders to form two strands which are twisted together at a convergence point upstream of a winding mechanism. The tension of the strands is regulated, the strands are wound to form a filament, and the filament thus formed is retwisted on a spinning jenny.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: January 29, 1985
    Inventor: Michel E. A. Vanhelle
  • Method and apparatus for twisting core strands
    Patent number: 4033102
    Abstract: The invention comprehends a method of twisting core strands, of the type comprising a sheath of fibres surrounding a central strand, a method in accordance with which a sliver of fibres is drawn between a point of entry of the said sliver and a pair of downstream drawing cylinders, a central strand is drawn under constant tension and is introduced without drawing into the sliver upstream of the said drawing cylinders, characterized in that a torsion in one sense and the other is conferred successively on the assembly constituted by the sliver of fibres and the central strand downstream of the said drawing cylinders.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: July 5, 1977
    Assignees: Centre Technique Industriel dit: Institut Textile de France, Etablissement Public dit: Agence Nationale de Valorisation
    Inventor: Michel E. Vanhelle