Patents by Inventor Francois Desvignes

Francois Desvignes 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).

  • Device for controlling the position of a first body relative to that of a second body
    Patent number: 3952208
    Abstract: An accurate and reliable device for controlling the position of a first body, of which the devices forms part, relative to a second body is described. The edge of the image of the second body is periodically moved over a row of radiation-sensitive detectors in a manner such that at most two detectors receive modulated radiation.
    Type: Grant
    Filed: February 1, 1974
    Date of Patent: April 20, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Francois Desvignes, Marcel Georges Hebert
  • Horizon sensor for a satellite in geostationary orbit
    Patent number: 3936629
    Abstract: A horizon sensor for satellites comprising a mask with four sets of four openings one of which receives a projected portion of the earth-space transition line, another is in the form of a grating and the remaining two slit-shaped openings include each a detector on which a secondary image of the grating or of the transition are reflected by an oscillating concave spherical mirror to derive therefrom a digitized measuring signal indicating the position of the transition line.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: February 3, 1976
    Assignee: U.S. Philips Corporation
    Inventor: Francois Desvignes