Patents by Inventor Sergio D'ANDREA

Sergio D'ANDREA 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).

  • Automatic balancing valve
    Patent number: 9910447
    Abstract: An automatic balancing valve is described, wherein a pressure regulator device is provided and comprises a sleeve sliding axially between a position opening at least one passage port for the fluid towards the outlet channel and a position closing the passage port/s depending on the pressure difference detected between two different chambers separated by an elastic membrane.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: March 6, 2018
    Assignee: FRATELLI PETTINAROLI S.P.A.
    Inventors: Giulio Pettinaroli, Liborio Spagnolo, Sergio D'Andrea
  • Bypass valve and hydraulic unit including such a valve
    Patent number: 9683677
    Abstract: A bypass valve is described comprising a delivery duct, a return duct and a central duct connecting the delivery and return ducts for the circulation of a heat-exchange fluid. A first ball valve is placed along the delivery duct and a second ball valve is placed along the return duct, at the intersection between the central duct and the delivery and return ducts. The rotation axes of the balls of the ball valves are perpendicular to each other.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: June 20, 2017
    Assignee: FRATELLI PETTINAROLI S.P.A.
    Inventors: Giulio Pettinaroli, Sergio D'Andrea
  • AUTOMATIC BALANCING VALVE
    Publication number: 20160266584
    Abstract: An automatic balancing valve is described, wherein a pressure regulator device is provided and comprises a sleeve sliding axially between a position opening at least one passage port for the fluid towards the outlet channel and a position closing the passage port/s depending on the pressure difference detected between two different chambers separated by an elastic membrane.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 15, 2016
    Inventors: Giulio PETTINAROLI, Liborio SPAGNOLO, Sergio D'ANDREA
  • BYPASS VALVE AND HYDRAULIC UNIT INCLUDING SUCH A VALVE
    Publication number: 20160061350
    Abstract: A bypass valve is described comprising a delivery duct, a return duct and a central duct connecting the delivery and return ducts for the circulation of a heat-exchange fluid. A first ball valve is placed along the delivery duct and a second ball valve is placed along the return duct, at the intersection between the central duct and the delivery and return ducts. The rotation axes of the balls of the ball valves are perpendicular to each other.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 3, 2016
    Inventors: Giulio PETTINAROLI, Sergio D'ANDREA