Patents by Inventor Emmanuel DE Blic

Emmanuel DE Blic 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).

  • Multi-stage hydraulic stretcher for elongated fasteners
    Patent number: 4074890
    Abstract: Hydraulic device for exerting a pre-stressing traction on bolts or pins comprises three stages, with each stage comprising a piston within a chamber. The thickness of the skirts of the piston increases from stage to stage in proportion to the pressure to which the piston of that stage is subjected during a stretching operation.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: February 21, 1978
    Assignee: SKF Compagnie d'Applications Mecaniques
    Inventors: Georges Boudet, Jacques Charpentier, Rene Vinel, Jean-Claude Desmoulins, Emmanuel DE Blic