Patents by Inventor Matteo Gasperini

Matteo Gasperini 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).

  • Variable displacement lubricant pump
    Patent number: 9017049
    Abstract: A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine includes a shiftable control ring. The control ring comprises a plurality of pump chambers and a pressure relief valve. The plurality of pump chambers rotate through a charge zone and a discharge zone. A pump rotor comprises radially slidable vanes. The pump rotor rotates in the control ring. A pretensioning element pushes the control ring to a high pumping volume direction. A first control chamber pushes the control ring to a low pumping volume direction. A second control chamber pushes the control ring to the high pumping volume direction. A pump outlet is connected to the first control chamber. A throttle valve connects the first control chamber with the second control chamber. The pressure relief valve of the control ring connects the discharge zone to the second control chamber.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: April 28, 2015
    Assignee: Pierburg Pump Technology GmbH
    Inventors: Matteo Gasperini, Stefano Fiorini, Massimiliano Lazzerini, Raffaele Squarcini
  • VARIABLE DISPLACEMENT LUBRICANT PUMP
    Publication number: 20130071275
    Abstract: A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine includes a shiftable control ring. The control ring comprises a plurality of pump chambers and a pressure relief valve. The plurality of pump chambers rotate through a charge zone and a discharge zone. A pump rotor comprises radially slidable vanes. The pump rotor rotates in the control ring. A pretensioning element pushes the control ring to a high pumping volume direction. A first control chamber pushes the control ring to a low pumping volume direction. A second control chamber pushes the control ring to the high pumping volume direction. A pump outlet is connected to the first control chamber. A throttle valve connects the first control chamber with the second control chamber. The pressure relief valve of the control ring connects the discharge zone to the second control chamber.
    Type: Application
    Filed: May 28, 2010
    Publication date: March 21, 2013
    Applicant: PIERBURG PUMP TECHNOLOGY GMBH
    Inventors: Matteo Gasperini, Stefano Fiorini, Massimiliano Lazzerini, Raffaele Squarcini