Patents by Inventor Giovanni Allegri

Giovanni Allegri 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).

  • Injection system having skirt walls forming an annular seal walls
    Patent number: 8985998
    Abstract: An injection system, in an apparatus for injection-molding plastics, comprises a manifold plate (2) having an injection nozzle (3) closed by a valve stem (7) commanded by a dual-effect pneumatic linear actuator (8, 9) wherein a piston cylinder (8) is compressed between a back plate (10) and a hot runner manifold (5). The piston cylinder bounds an annular gap into which the compressed air that drives the actuator can flow.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: March 24, 2015
    Assignee: Sacmi Cooperativa Meccanici Imola Societa' Cooperativa
    Inventors: Andrea Ravagnani, Giovanni Allegri
  • INJECTION SYSTEM
    Publication number: 20140037782
    Abstract: An injection system, in an apparatus for injection-moulding plastics, comprises a manifold plate (2) having an injection nozzle (3) closed by a valve stem (7) commanded by a dual-effect pneumatic linear actuator (8, 9) wherein a piston cylinder (8) is compressed between a back plate (10) and a hot runner manifold (5). The piston cylinder bounds an annular gap into which the compressed air that drives the actuator can flow.
    Type: Application
    Filed: June 16, 2011
    Publication date: February 6, 2014
    Applicant: Sacmi Cooperativa Meccanici Imola Societa' Cooperative
    Inventors: Andrea Ravagnani, Giovanni Allegri