Patents by Inventor Christian Thenon

Christian Thenon 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).

  • Rollable chart
    Patent number: 4203234
    Abstract: A rollable chart having a web of flexible material wound about two rollers. An endless band extends around pulleys adjacent each roller for manual manipulation. Two unidirectional driving devices are provided each including an internally toothed surface, a disk axially adjacent the toothed surface formed with an inclined cam groove with which a pin on a sliding pawl cooperates.
    Type: Grant
    Filed: July 7, 1978
    Date of Patent: May 20, 1980
    Assignee: De Visu International
    Inventor: Christian Thenon
  • Device for alternately winding flexible bands and the like between two rolls
    Patent number: 4015792
    Abstract: A device for alternately winding a flexible sheet between two rolls so that as the sheet winds on one roll it unwinds from the other comprises a single reversible driving motor connected by belts to drive shafts which drive the respective rolls via unidirectional couplings. The respective speeds of the drive shafts are related to the maximum and minimum roll diameters to ensure that the sheet remains taut between the rolls.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: April 5, 1977
    Assignee: Etablissements Carpano & Pons
    Inventors: Christian Thenon, Bernard Pelletier