Patents by Inventor Andrea Spaggiari

Andrea Spaggiari 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).

  • Combined actuator with rheological control brake
    Patent number: 8051823
    Abstract: A combined actuator provided with: a mobile element; a driver for displacing the mobile element; and a rheological control brake, which is mechanically coupled to the mobile element to adjust the displacement of the mobile element; the rheological control brake has: two contiguous adjustment chambers; a rheological fluid contained in the two adjustment chambers; a sliding piston, which tightly separates the two adjustment chambers and is mechanically connected to the mobile element; at least one external connection pipe, which reciprocally connects the two adjustment chambers; and a driving device which is coupled to the external connection pipe so as to apply a variable electromagnetic field to the rheological fluid contained in the external connection pipe for varying the viscosity of the rheological fluid between a minimum value and a maximum value.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: November 8, 2011
    Assignee: Magneti Marelli Powertrain S.p.A.
    Inventors: Andrea Spaggiari, Eugenio Dragoni, Nazario Bellato, Michele Pecora, Federico Lancioni, Stefano Fornara, Andrea Baldassari
  • COMBINED ACTUATOR WITH RHEOLOGICAL CONTROL BRAKE
    Publication number: 20090127484
    Abstract: A combined actuator provided with: a mobile element; a driver for displacing the mobile element; and a rheological control brake, which is mechanically coupled to the mobile element to adjust the displacement of the mobile element; the rheological control brake has: two contiguous adjustment chambers; a rheological fluid contained in the two adjustment chambers; a sliding piston, which tightly separates the two adjustment chambers and is mechanically connected to the mobile element; at least one external connection pipe, which reciprocally connects the two adjustment chambers; and a driving device which is coupled to the external connection pipe so as to apply a variable electromagnetic field to the rheological fluid contained in the external connection pipe for varying the viscosity of the rheological fluid between a minimum value and a maximum value.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 21, 2009
    Inventors: Andrea Spaggiari, Eugenio Dragoni, Nazario Bellato, Michele Pecora, Federico Lancioni, Stefano Fornara, Andrea Baldassari