Patents by Inventor Edmond L. Pignal

Edmond L. Pignal 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 and device for the automatic introduction of studs into the electrode of a welding machine
    Patent number: 4145596
    Abstract: The apparatus for the automatic introduction of the members to the electrode of a resistance welding machine comprises an arm mounted on the machine frame so as to pivot about a horizontal pin located at the intersection of the horizontal hollow electrode axis and the vertical of the end of the slide for supplying the members to be welded, at least one jack for controlling the rotation of said arm, a finger mounted at the end of the arm so as to slide radially and coupled to at least one control jack integral with the arm, and a gripper mounted at the end of said finger and having two jaws which move under the action of at least one jack.A particular application of the invention is to the fitting of studs to heat exchanger tubes.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: March 20, 1979
    Assignee: Societe Anonyme dite: Societe des Fabrications Biraghi-Entrepose
    Inventor: Edmond L. Pignal