Patents Assigned to Etablissements Metallurgiques du Val d'Ambv
  • Method of manufacturing hollow elements from thermoplastic materials
    Patent number: 3970736
    Abstract: A method of moulding a drum or similar from a thermoplastic resin in powdered form, in which an appropriately shaped mould, after introduction of the thermoplastic material, is subjected to the actions of alternate direction rotation, tilting, heating and cooling in a predetermined sequence with the heating of the drum body and ends being effected and controlled independently.
    Type: Grant
    Filed: January 29, 1975
    Date of Patent: July 20, 1976
    Assignee: Etablissements Metallurgiques du Val d'Ambv
    Inventor: Pierre Louis Gimaret