Patents by Inventor Davide I. Davoli

Davide I. Davoli 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).

  • Low pressure rise rate pilot operated poppet relief valve
    Patent number: 8360096
    Abstract: A relief valve for a hydraulic machine that combines a poppet valve assembly and a pilot valve assembly together using a connector pin wherein internal fluid passageways within the poppet and pilot spools provide a fluid flow path between the inlet of the valve and a cavity disposed between the poppet and pilot. As a result of the internal passageways fluid is metered to the interior cavity to provide additional control and stability within the relief valve.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: January 29, 2013
    Assignee: Sauer-Danfoss Inc.
    Inventors: Dennis O. Courtright, Enzo Soncini, Davide I. Davoli
  • Low rise rate direct acting relief valve
    Patent number: 7591283
    Abstract: A relief valve assembly. The relief valve assembly has a housing that houses a sleeve element that surrounds a spool that has a spring guide disposed therein and is biased away from the spool by a spring. A fluid flow path is created from a valve exit of the assembly through the sleeve and spool via a series of openings, grooves and orifices in at least one position of the relief valve assembly. The fluid flow path acts to reduce pressure rise rate.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: September 22, 2009
    Assignee: Sauer-Danfoss, Inc.
    Inventors: Dennis O. Courtright, Enzo Soncini, Davide I. Davoli
  • LOW PRESSURE RISE RATE PILOT OPERATED POPPET RELIEF VALVE
    Publication number: 20090044871
    Abstract: A relief valve for a hydraulic machine that combines a poppet valve assembly and a pilot valve assembly together using a connector pin wherein internal fluid passageways within the poppet and pilot spools provide a fluid flow path between the inlet of the valve and a cavity disposed between the poppet and pilot. As a result of the internal passageways fluid is metered to the interior cavity to provide additional control and stability within the relief valve.
    Type: Application
    Filed: August 15, 2007
    Publication date: February 19, 2009
    Applicant: SAUER-DANFOSS INC.
    Inventors: Dennis O. Courtright, Enzo Soncini, Davide I. Davoli
  • LOW RISE RATE DIRECT ACTING RELIEF VALVE
    Publication number: 20080276997
    Abstract: A relief valve assembly. The relief valve assembly has a housing that houses a sleeve element that surrounds a spool that has a spring guide disposed therein and is biased away from the spool by a spring. A fluid flow path is created from a valve exit of the assembly through the sleeve and spool via a series of openings, grooves and orifices in at least one position of the relief valve assembly. The fluid flow path acts to reduce pressure rise rate.
    Type: Application
    Filed: May 7, 2007
    Publication date: November 13, 2008
    Applicant: SAUER-DANFOSS INC.
    Inventors: Dennis O. Courtright, Enzo Soncini, Davide I. Davoli