Patents by Inventor Marcel J. Pierre

Marcel J. Pierre 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).

  • Press for moulding gramophone records and the like
    Patent number: 3969057
    Abstract: A press for moulding plastic materials for the manufacture of gramophone disc records or like flat parts comprises a fixed press platen carrying a first mould element, a movable press platen guided along columns fast with the fixed platen and a movable intermediate platen carrying a second mould element. A mechanical device is provided to urge the movable press platen to the fixed press platen. A fluid pressure is supplied between coacting cylinder and piston provided respectively in the movable platens. The intermediate platen is supported and guided by the movable platen without any contact between this intermediate platen and the columns.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: July 13, 1976
    Assignee: Societe Materiel pour Toutes Applications Plastiques - M.A.P.
    Inventor: Marcel J. Pierre
  • Press for moulding gramophone records or the like
    Patent number: RE29294
    Abstract: A press for moulding plastic materials for the manufacture of gramophone disc records or like flat parts comprises a fixed press platen carrying a first mould element, a movable press platen guided along columns fast with the fixed platen and a movable intermediate platen carrying a second mould element. A mechanical device is provided to urge the movable press platen to the fixed press platen. A fluid pressure is supplied between coacting cylinder and piston provided respectively in the movable platens. The intermediate platen is supported and guided by the movable platen without any contact between this intermediate platen and the columns.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: July 5, 1977
    Assignee: Societe Materiel pour Toutes Applications Plastiques - M.A.P.
    Inventor: Marcel J. Pierre