Patents by Inventor Jacques Devaud

Jacques Devaud 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).

  • Patent number: 4333154
    Abstract: In a device for determining the direction of a line of sight, or the orientation of a sighting trihedron associated with said line of sight, defined by a magnetic azimuth angle, an elevation angle and an inclination angle determined in a reference trihedron, a sighting unit defines the sighting trihedron and a gravimetric detector measures components of the gravity acceleration vector in the sighting trihedron. A microprocessor computes the elevation and inclination angles in terms of the components of the gravity acceleration vector, and a magnetometric detector measures components of the earth magnetic field vector in the sighting trihedron. The sighting and reference trihedrons define long and cross axes and the microprocessor computes the components of the earth magnetic field vector along long and cross axes in terms of the components of the earth magnetic field vector. The magnetic azimuth angle is computed in terms of the components along the long and cross axes.
    Type: Grant
    Filed: March 5, 1980
    Date of Patent: June 1, 1982
    Assignee: Crouzet
    Inventors: Jacques Devaud, Jean-Robert Costet, Michel Moulin
  • Patent number: 3936949
    Abstract: A static non-swinging device for determining the course on board a vehicle comprising a magnetometer having three axes for determining the components of the earth's magnetic field along three axes connected to the vehicle, a vertical gyroscope and a computer for calculating the direction with respect to the vehicle of the horizontal component of the earth's magnetic field, wherein said magnetometer comprises on each axis a single coil having a saturable core controlled in such manner as to furnish a d-c voltage which is proportional to the component of the magnetic field along said axis.
    Type: Grant
    Filed: December 27, 1973
    Date of Patent: February 10, 1976
    Assignee: Grouzet
    Inventor: Jacques Devaud