Patents Assigned to S.T. Dupont
  • Patent number: 4139084
    Abstract: Hand luggage is disclosed having a plurality of compartments, each of which can be separately opened by means of an outside opening control, and in which all the opening controls are grouped on a single panel.
    Type: Grant
    Filed: October 18, 1977
    Date of Patent: February 13, 1979
    Assignee: S. T. DuPont
    Inventor: Norbert H. J. Linke
  • Patent number: 4097222
    Abstract: An adjustment device for liquefied gas lighters is disclosed, which allows precise automated setting of maximum and minimum permitted flame heights during the assembly of lighters which have a rotatable valve adjustment member extending from a valve well in the lighter. Fixed stop means are provided on the lighter. An adjustment mechanism rotates with the valve adjustment member and after adjustment of the flame height, movable stop means are formed in the adjustment mechanism in positions chosen such that the movable stop means can abut the fixed stop means at positions of the adjustment mechanism corresponding to maximum and minimum flame height, respectively.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: June 27, 1978
    Assignee: S.T. Dupont
    Inventor: Edmond L. J. Faudemay
  • Patent number: 4079495
    Abstract: An adjustment device for liquefied gas lighters is disclosed, which allows precise automated setting of maximum and minimum permitted flame heights during the assembly of lighters which have a rotatable valve adjustment member extending from a valve well in the lighter. Fixed stop means are provided on the lighter. An adjustment mechanism rotates with the valve adjustment member and after adjustment of the flame height, movable stop means are formed in the adjustment mechanism in positions chosen such that the movable stop means can abut the fixed stop means at positions of the adjustment mechanism corresponding to maximum and minimum flame height, respectively.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: March 21, 1978
    Assignee: S.T. Dupont
    Inventor: Edmond L. J. Faudemay
  • Patent number: 4019850
    Abstract: A process for storage of a liquefied gas which is discharged exclusively in a gaseous form into an atmosphere whose pressure is less than the storage pressure. There is disposed in the storage chamber conjointly with the liquefied stored gas, a minimum quantity of a fibrous adsorbant support, the diameter of the fibers being equal at most to 25 microns. The process is applicable to the storage of liquefied gas without need for auxiliary evaporation or auxiliary expansion apparatus.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: April 26, 1977
    Assignee: S.T. Dupont
    Inventor: Georges Tallonneau
  • Patent number: 4017252
    Abstract: A process of storing a liquefied gas for distribution exclusively in gaseous form in an atmosphere whose pressure is less than that of the storage pressure, comprising disposing in a storage chamber conjointly with a stored liquefied gas, a minimum quantity of a capillary adsorbant support having open cells, the mean diameter of the cells being equal at most to 500 microns and the mean thickness of the intercellular walls being at most equal to 50 microns. The actual volume of the adsorbant support constituted by the volume remaining after deduction of all interstitial spaces of the minimum quantity, being:A. at least 2% of the volume of the storage chamber for a capillary support having open cells, the mean volume of each, once in place, being equal to that of a sphere of a diameter of 40 microns with a mean thickness of the intercellular wall of about 4 microns and varying between 2 and 8 microns,B.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: April 12, 1977
    Assignee: S.T. Dupont
    Inventor: Georges Tallonneau
  • Patent number: 3990801
    Abstract: A cap for a writing instrument includes sleeve means coaxially disposed within the cap body and formed from material softer than the material of the writing instrument body. The sleeve means has a non-deformable part and a deformable part arranged to substantially inhibit translational movement of the cap while attached to the writing instrument body. However, the cap may be angularly adjusted without scoring the writing instrument body.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: November 9, 1976
    Assignee: S.T. Dupont
    Inventor: Karl Heinz Otto Dietze
  • Patent number: 3970734
    Abstract: A method of molding a part having a calibrated aperture including actuating a tapered pin in an aperture of a female mold wall so that the pin engages and penetrates a desired distance into a core member disposed within the female mold, forming its own housing in the core. Molding material is then molded between the female mold wall and the core member and about the pin so that a calibrated aperture is formed in the molded article.
    Type: Grant
    Filed: February 5, 1974
    Date of Patent: July 20, 1976
    Assignee: S.T. Dupont
    Inventor: Roland Broux
  • Patent number: 3950960
    Abstract: A process for storage of a liquefied gas on an adsorbant support in a chamber provided with at least one discharge orifice for the distribution of the gas in gaseous form into an environment at a pressure lower then the storage pressure. The adsorbant support is constituted of hollow capillary fibres, natural or synthetic, such as kapok fibers. The hollow capillary fibers have an inner diameter between about 10 to 35.mu. and a wall thickness about 0.2 to 3.mu.. The actual volume of the fibers represents about 11% of the storage chamber.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: April 20, 1976
    Assignee: S.T. Dupont
    Inventor: Antoine Kawam
  • Patent number: 3938943
    Abstract: A security device for a lighter having an externally operated actuator lever which opens and closes a gas valve. The security device comprises a security member secured to the lighter for preventing operation of the actuator lever, the security member being attached to the lighter by at least one line of weakness so as to be separable from the lighter to free the actuator lever. The security member can enclose the lever to prevent access thereto, or it can abut the lever to block movement thereof.
    Type: Grant
    Filed: February 28, 1974
    Date of Patent: February 17, 1976
    Assignee: S.T. Dupont
    Inventor: Jean Gaston Malamoud
  • Patent number: D242855
    Type: Grant
    Filed: June 7, 1974
    Date of Patent: December 28, 1976
    Assignee: S.T. Dupont
    Inventor: Michel Grinberg
  • Patent number: D247394
    Type: Grant
    Filed: June 17, 1976
    Date of Patent: February 28, 1978
    Assignee: S. T. Dupont
    Inventor: Norbert H. J. Linke
  • Patent number: D247501
    Type: Grant
    Filed: June 3, 1976
    Date of Patent: March 14, 1978
    Assignee: S.T. Dupont
    Inventor: Jean Gaston Malamoud
  • Patent number: D251301
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: March 13, 1979
    Assignee: S. T. Dupont
    Inventor: Jean G. Malamoud
  • Patent number: D251302
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: March 13, 1979
    Assignee: S.T. Dupont
    Inventor: Jean G. Malamoud