Patents by Inventor Leonardo Tognarelli

Leonardo Tognarelli 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).

  • Publication number: 20130019745
    Abstract: Disclosed herein is a differential pressure poppet valve comprising: a valve body, the valve body having at least one flow inlet and at least one flow outlet; at least one shutter guide disposed inside the valve body; at least one poppet shutter guided by the shutter guide; at least one flow passage from the flow inlet to the flow outlet, the flow passage being formed between an inside surface of the valve body and an outside surface of the shutter guide and of the poppet shutter. The valve further comprises at least one biasing member configured to bias the poppet shutter towards a closed position so as to block the flow passage through the flow inlet. To reduce impact wear at least a first damper is provided, configured and arranged to at least partly absorb impact energy of the poppet shutter when the poppet shutter opens or closes the flow inlet.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 24, 2013
    Inventors: Riccardo BAGAGLI, Leonardo TOGNARELLI, Guido VOLTERRANI, Michele SANESI
  • Publication number: 20120141261
    Abstract: An impeller for a turbo-machine and is provided.
    Type: Application
    Filed: May 7, 2010
    Publication date: June 7, 2012
    Inventors: Iacopo Giovannetti, Massimo Giannozzi, Dino Bianchi, Leonardo Tognarelli, Manuele Bigi, Andrea Massini
  • Patent number: 8186875
    Abstract: System, computer software and method for determining a susceptibility to reheat cracking of a sample of material, which includes a welded area. The method includes measuring a length of the sample, applying a first stress to the sample to achieve a predetermined elongation of the sample, exposing the elongated sample to a predefined heat treatment, applying a second stress to the sample until the sample breaks at least into two different pieces, and determining the susceptibility of the broken sample to reheat cracking.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: May 29, 2012
    Assignee: Nuovo Pignone S.p.A.
    Inventors: Leonardo Tognarelli, Eugenio Giorni, Marco Romanelli, Marco Manetti
  • Publication number: 20110137616
    Abstract: Systems and methods for generating transfer functions associated with calculating local stresses on pipe elements by post processing forces and moments of a pipe model representing the piping system. The transfer functions are reusable and allow recalculation with different sets of user data without requiring regeneration of the transfer functions.
    Type: Application
    Filed: May 3, 2010
    Publication date: June 9, 2011
    Applicant: NUOVO PIGNONE S.P.A.
    Inventors: Leonardo TOGNARELLI, Paolo DI SISTO, Michelangelo FABBRIZZI, Roberto MERLO
  • Publication number: 20100070203
    Abstract: System, computer software and method for determining a susceptibility to reheat cracking of a sample of material, which includes a welded area. The method includes measuring a length of the sample, applying a first stress to the sample to achieve a predetermined elongation of the sample, exposing the elongated sample to a predefined heat treatment, applying a second stress to the sample until the sample breaks at least into two different pieces, and determining the susceptibility of the broken sample to reheat cracking.
    Type: Application
    Filed: December 8, 2008
    Publication date: March 18, 2010
    Inventors: Leonardo TOGNARELLI, Eugenio Giorni, Marco Romanelli, Marco Manetti
  • Patent number: 7555906
    Abstract: A mounting system for a liner within a combination chamber of a gas turbine, where the liner is secured at one upstream end to a burner and at an opposite downstream end to a transition duct, the mounting system comprising: a first elastic head comprised of a first ring-shaped housing having first and second pluralities of radially spaced, axially extending teeth, with a first annular groove between said first and second pluralities of teeth, wherein said first elastic head is secured to said upstream end of said liner, with an end portion of said liner received within said first annular groove; and a second elastic head comprised of a second ring-shaped housing having third and fourth pluralities of radially-spaced, axially-extending teeth, with a second annular groove between said third and fourth pluralities of teeth, wherein said second elastic head is secured to said downstream end of said liner, with an opposite end portion of said liner received within said second annular groove.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: July 7, 2009
    Assignee: Nuovo Pignone Holding S.p.A.
    Inventors: Alessio Anichini, Nicola Lanese, Eugenio Giorni, Leonardo Tognarelli
  • Patent number: 6910853
    Abstract: A structure for attaching together or sealing a space between a first component and a second component that have different rates or amounts of dimensional change upon being exposed to temperatures other than ambient temperature. The structure comprises a first attachment structure associated with the first component that slidably engages a second attachment structure associated with the second component, thereby allowing for an independent floating movement of the second component relative to the first component. The structure can comprise split rings, laminar rings, or multiple split rings.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: June 28, 2005
    Assignee: General Electric Company
    Inventors: Gregory Scot Corman, Anthony John Dean, Leonardo Tognarelli, Mario Pecchioli
  • Publication number: 20050058537
    Abstract: A structure for attaching together or sealing a space between a first component and a second component that have different rates or amounts of dimensional change upon being exposed to temperatures other than ambient temperature. The structure comprises a first attachment structure associated with the first component that slidably engages a second attachment structure associated with the second component, thereby allowing for an independent floating movement of the second component relative to the first component. The structure can comprise split rings, laminar rings, or multiple split rings.
    Type: Application
    Filed: November 27, 2002
    Publication date: March 17, 2005
    Applicant: General Electric Company
    Inventors: Gregory Corman, Anthony Dean, Leonardo Tognarelli, Mario Pecchioli
  • Publication number: 20050050902
    Abstract: Fixing system (1), inside the combustion chamber of a gas turbine with low polluting emissions, of a liner or flame pipe equipped with two cylindrical elastic heads (5) each wedged at the end of the flame pipe (10) to allow its thermal expansion by lowering the thermal tensions due to the different expansion coefficient with the combustion chamber.
    Type: Application
    Filed: August 26, 2004
    Publication date: March 10, 2005
    Applicant: Nuovo Pignone Holdings SPA
    Inventors: Alessio Anichini, Nicola Lanese, Eugenio Giorni, Leonardo Tognarelli