Patents by Inventor Damaso CHECCACCI

Damaso CHECCACCI 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).

  • STEAM TURBINE WITH ROTATABLE STATOR BLADES
    Publication number: 20220154588
    Abstract: The steam turbine has a plurality of expansion stages and stator blades upstream at least one of the expansion stages; in order to regulate steam flow inside the steam turbine and maximize turbine efficiency, the angular positions of the stator blades are controlled for example by an external control unit through e.g. a command rod during operation of the steam turbine.
    Type: Application
    Filed: April 3, 2020
    Publication date: May 19, 2022
    Inventors: Lorenzo Cosi, Enrico Giusti, Andrea Paggini, Damaso Checcacci, Federico Bucciarelli, Massimiliano Gagliano, Marco Fiori, Damiano Guadagnoli
  • Turbomachine rotor assembly and method
    Patent number: 10267166
    Abstract: A turbomachine assembly is shown, including a rotor and a ring of blades mounted on the rotor. Each blade includes an airfoil portion and a root portion inserted in a circumferential blade-retaining groove of the rotor. The blade-retaining groove includes an enlarged groove portion. The blades in the enlarged groove portion are rotatable around a respective, generally radial axis, to take a position of minimum tangential dimension. At least one removable insert is arranged along the enlarged groove portion, between the root portions of the blades located in the enlarged groove portion and a side wall of the blade-retaining groove, to force and lock the blades in a final assembled arrangement.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: April 23, 2019
    Assignee: NUOVO PIGNONE SRL
    Inventors: Lorenzo Cosi, Damaso Checcacci
  • TURBOMACHINE ROTOR ASSEMBLY AND METHOD
    Publication number: 20160130956
    Abstract: A turbomachine assembly is shown, including a rotor and a ring of blades mounted on the rotor. Each blade includes an airfoil portion and a root portion inserted in a circumferential blade-retaining groove of the rotor. The blade-retaining groove includes an enlarged groove portion. The blades in the enlarged groove portion are rotatable around a respective, generally radial axis, to take a position of minimum tangential dimension. At least one removable insert is arranged along the enlarged groove portion, between the root portions of the blades located in the enlarged groove portion and a side wall of the blade-retaining groove, to force and lock the blades in a final assembled arrangement.
    Type: Application
    Filed: May 19, 2014
    Publication date: May 12, 2016
    Applicant: NUOVO PIGNONE SRL
    Inventors: Lorenzo COSI, Damaso CHECCACCI