Patents by Inventor Bernard Letemps

Bernard Letemps 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).

  • Glass molding system
    Patent number: 4775402
    Abstract: The invention concerns a glass molding process and system according to which glass sheet is heated in a horizontal position in a heating furnace, transferred vertically to an upper mold having a radius of curvature greater than the radius of curvature that it is desired to give the glass sheet and dropped on a bending frame where the glass sinks under the effect of inertia and gravity. Vertical transfer of the glass is obtained by a vacuum created on the periphery of the upper mold.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: October 4, 1988
    Assignee: Saint-Gobain Vitrage
    Inventors: Bernard Letemps, Jean-Marc Petitcollin, Francis Perin, Herve Prouveur
  • Tempering of glass
    Patent number: 4773926
    Abstract: The invention relates to air tempering of glass in flat tempering installations. It proposes blowing air, particularly at sonic speed, with nozzles, preferably tubular, slightly distant from the glass, exhibiting the maximum loss of pressure at their free end close to the glass. It makes possible the tempering, under economically advantageous conditions, of glass sheets having thicknesses less than 2 mm and all the more so, glass sheets having greater thicknesses, which can be used as glasses, particularly windshields, for motor vehicles.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: September 27, 1988
    Assignee: Saint-Gobain Vitrage
    Inventors: Bernard Letemps, Daniel Colmon
  • Glass tempering using gas
    Patent number: 4749401
    Abstract: In glass tempering using a cooling gas, the impact of gas jets on glass is modified through the use of perturbations to which said jets are subject. The perturbations may be introduced laterally with respect to the tempering jets, and spaced from the opening providing said tempering jets. The characteristics of the perturbations vary cyclically. The invention makes it possible to obtain homogeneous tempering, even for highly bulged glass sheets.
    Type: Grant
    Filed: August 27, 1987
    Date of Patent: June 7, 1988
    Assignee: Saint-Gobain Vitrage "Les Miroirs"
    Inventors: Daniel Colmon, Bernard Letemps
  • Apparatus for holding a glass sheet in a substantially vertical position during heat treatment of the glass sheet
    Patent number: 4626207
    Abstract: A frame for holding a glass sheet in a substantially vertical position. The frame has two uprights joined by upper and lower crosspieces. A lower support means adapted to engage a bottom edge of a glass sheet is carried by the lower crosspiece. Upper support means freely movable in a vertical direction are adopted to engage the upper edge of the glass sheet and form part of the frame.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: December 2, 1986
    Assignee: Saint Gobain Vitrage
    Inventors: Claude Aubry, Jacques Chaumette, Bernard Letemps, Jean-Marc Petitcollin, Werner Gatzweiler, Heinz-Bernd Rissmann, Luc Vanaschen, Jurgen Zeitzen
  • Glass pane having low emissivity, particular for vehicles
    Patent number: 4584236
    Abstract: The invention relates to a pane coated with a metal oxide coating, particularly a pane for an automobile window.The inventive pane bears a coating on its face intended to be disposed on the interior of the vehicle, which coating is comprised of a metal oxide of low emissivity.Such a pane improves the physiological comfort of the passengers, particularly during cold periods.
    Type: Grant
    Filed: July 24, 1984
    Date of Patent: April 22, 1986
    Assignee: Saint-Gobain Vitrage
    Inventors: Daniel Colmon, Bernard Letemps, Jean-Pierre Delpeyroux, Jacques Fremeaux
  • Quenching or tempering by means of a two-phase jet
    Patent number: 4578102
    Abstract: The invention relates to thermal quenching or tempering of glass by means of a gaseous jet directed by nozzles.According to the inventive method, the nozzles are supplied with gas and liquid under a pressure which enables the jet velocity attained at the exit of the nozzles to be at least sonic, said jet being comprised of a mixture of a gas and a finely divided liquid.In particular the gas may be air and the liquid water.The invention may be applied to vertical or horizontal quenching or tempering of sheets or other items of glass.
    Type: Grant
    Filed: August 3, 1984
    Date of Patent: March 25, 1986
    Assignee: Saint-Gobain Recherche
    Inventors: Daniel Colmon, Bernard Letemps