Patents by Inventor Jean Desverchere

Jean Desverchere 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).

  • Process for depositing an elastomeric or thermosetting bank on a support
    Patent number: 4247510
    Abstract: The invention relates to a method and apparatus for manufacturing bands of elastomeric or thermosetting material of the type used in making impervious seals and gaskets. The process consists in molding or injecting at ambient temperature the elastomeric or thermosetting material in the viscous state into a molding cavity on a support which, compared to the material being deposited, has an adherence that is greater than that of the molding cavity. Subsequently, the deposited material is vulcanized or polymerized into the desired band configuration.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: January 27, 1981
    Assignee: Cefilac
    Inventor: Jean Desverchere
  • Apparatus for the dry production of non-woven webs
    Patent number: 4106163
    Abstract: A nonwoven uniform web is formed from particulate material and a binding agent in a moving conveyor belt. The material is fed to the belt through a cowl in a random fashion and air is removed from the material; the layer of material is subsequently thinned by a peak removal device and is precalendered, rolled and then heated to activate the binding agent. The resulting web has similar mechanical properties in length direction and width direction, and has a high elastic recovery.
    Type: Grant
    Filed: July 28, 1976
    Date of Patent: August 15, 1978
    Assignee: Cefilac
    Inventor: Jean Desverchere
  • Non-woven webs and method for the dry production thereof
    Patent number: 4091161
    Abstract: A nonwoven uniform web is formed from particulate material and a binding agent in a moving conveyor belt. The material is fed to the belt through a cowl in a random fashion and air is removed from the material; the layer of material is subsequently thinned by a peak removal device and is precalendered, rolled and then heated to activate the binding agent. The resulting web has similar mechanical properties in length direction and width direction, and has a high elastic recovery.
    Type: Grant
    Filed: January 30, 1976
    Date of Patent: May 23, 1978
    Assignee: Cefilac
    Inventor: Jean Desverchere
  • Method of locally impregnating sealing materials with a fluid-tight impregnant
    Patent number: 3950576
    Abstract: Impregnating porous material such as sealing materials by introducing a viscous liquid impregnating material under high pressure into the surface of a limited zone of said porous material.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: April 13, 1976
    Assignee: Societe Anonyme dite: Cefilac
    Inventor: Jean Desverchere