Patents Assigned to Verreries de Graville
  • Apparatus for the production of glass containers of the bottle and flask type having a medium or narrow aperture, using the blow-blow or press-blow process
    Patent number: 4609393
    Abstract: Apparatus for the production of bottle and flask type glass containers having a medium or narrow aperture using the blow-blow or press-blow process. The apparatus is characterized in that it includes a two-part bushing having a top part and a bottom part, a compression spring acting on the bushing, an auxiliary jack connected to the piston of a main jack, a movable end which with the main piston defines one of the main jack chambers. The invention is applicable primarily to the liquid packaging industry.
    Type: Grant
    Filed: January 17, 1985
    Date of Patent: September 2, 1986
    Assignee: Verreries de Graville
    Inventor: Pierre G. Boutier