Patents by Inventor Dominique DU Boisbaudry

Dominique DU Boisbaudry 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).

  • Digital coding of angles
    Patent number: 4064504
    Abstract: In a digital angle coder, a revolving disc bears a first series of marks ularly spaced around its axis, capable of being read by two diametrically-opposed fixed heads, and a second series of marks equal in number to the first, regularly spaced around the axis and capable of being read by two diametrically opposed movable heads. Each of the heads includes, for example, a grid reproducing a portion of the series of marks, a photo-emission element and a photo-receiving element. A first auxiliary mark may be read by a fixed auxiliary head and a second auxiliary mark may be read by a movable auxiliary head.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: December 20, 1977
    Assignee: Societe d'Etudes, Recherches et Constructions Electroniques - SERCEL
    Inventors: Marc Lepetit, Philippe Angelle, Jacques Bodin, Dominique DU Boisbaudry