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).

  • Patent number: 10578091
    Abstract: Fluid flow adapter for a cylinder of a reciprocating compressor, the cylinder having a side wall provided with a valve seat, the fluid flow adapter comprising a filler element having an internal surface facing an internal volume of the cylinder and an external surface facing the valve, the filler element having at least a channel connecting the internal surface to the external surface, wherein the internal surface is flush with the side wall of the cylinder, the channel being configured to allow the passage of fluid between the internal volume of the cylinder and the valve.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 3, 2020
    Assignee: NUOVO PIGNONE SRL
    Inventors: Riccardo Bagagli, Leonardo Tognarelli, Alberto Babbini, Massimo Bargiacchi, Guido Pratelli, Federico Puccinelli, Riccardo Maleci
  • Patent number: 10563645
    Abstract: Apparatuses and methods overcoming the technical challenges in actuating valves of reciprocating compressors used in oil and gas industry are provided. A valve assembly includes an actuator, a shaft, a collar and a thrust bushing. The actuator is configured to generate a displacement. The shaft configured to receive a rotating motion caused by the displacement and to penetrate inside a compressor body of the reciprocating compressor. The collar is located close to a location where the shaft penetrates inside the compressor body. The thrust bushing is located between the collar and the compressor body. The rotating motion actuates a valve closing member of a valve inside the compressor body.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: February 18, 2020
    Assignee: NUOVO PIGNONE SPA
    Inventors: Riccardo Bagagli, Leonardo Tognarelli
  • Patent number: 10563766
    Abstract: A packing case for a plunger or a piston rod of a reciprocating machine comprises packing cups, each packing cup comprising a body with a hole for the passage of the plunger or rod and a sealing ring seat for housing a sealing ring which slidably bear against the plunger or rod. Packing cups are aligned with each other in series. The packing case comprises lube oil ducts for supplying lube oil from an end of the packing case to the sealing ring seat. Each packing cup comprises sectors, each sector comprising at least lube oil duct portions. The packing cups are positionable to bring, one sector at a time in an activation position where some of the lube oil duct portions of the sector are connected with the lube oil duct portions of an adjacent packing cup to form lube oil ducts. The packing cups are lockable.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: February 18, 2020
    Assignee: NUOVO PIGONE SRL
    Inventors: Carmelo Maggi, Jan Pawel Wojnar, Michele Sanesi, Leonardo Tognarelli
  • Patent number: 10267308
    Abstract: A crosshead-piston rod assembly for a reciprocating compressor comprises a piston rod; a crosshead having a bore; a connection element attached to the piston rod and at least partially inserted into the bore for connecting the crosshead to a piston.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: April 23, 2019
    Assignee: Nuovo Pignone SRL
    Inventors: Riccardo Bagagli, Leonardo Tognarelli, Francesco Chiesi, Tommaso Breschi
  • Patent number: 10253765
    Abstract: A valve assembly in a reciprocating compressor used in oil and gas industry is provided. The valve assembly comprises an actuator configured to a valve actuating motion and a valve. The valve has a valve seat comprises an inlet port configured to allow a fluid to flow through the valve seat, a counter-seat comprising an outlet port configured to allow the fluid to flow through the counter-seat, and a valve closing member attached to the counter-seat and configured to cover the inlet port when the counter-seat is in a closed position. The counter-seat is configured to receive the valve actuating motion and to move between the closed position and an open position in which the valve closing member does not cover the inlet port thereby selectively allowing the fluid to flow on a flow path which comprises the inlet port and the outlet port.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: April 9, 2019
    Assignee: NUOVO PIGNONE S.P.A.
    Inventors: Riccardo Bagagli, Leonardo Tognarelli
  • Patent number: 10253760
    Abstract: Cam actuated valves for compressors including mechanisms for changing an instant when the cam actuated valve is opened and/or a time interval during which the cam actuated valve is in an open state within the time range of a compression cycle. A reciprocating compressor has: a body including a compression chamber; a cam having an oblong portion, being located inside the body and being configured to be rotated around a rotation axis, to perform a rotation during each compression cycle; an actuating element located inside the body and configured to receive a linear displacement or an angular displacement due to the oblong portion of the cam; and a valve located on a flow path of the fluid toward or from the compression chamber and configured to be switched to an open state by the actuating element. The reciprocating compressor also includes a controller configured to adjust timing of the valve.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: April 9, 2019
    Assignee: Nuovo Pignone SRL
    Inventors: Riccardo Bagagli, Leonardo Tognarelli
  • Patent number: 10184464
    Abstract: A compressor includes a piston disposed in a housing and configured to be reciprocatably driven in the housing by an electromagnetic drive. A conventional linear motor drive assembly reciprocatably drives the piston in an embodiment. A magnetically-geared drive assembly reciprocatably drives the piston in another embodiment. A solenoid drive assembly reciprocatably drives the piston in another embodiment. A control system is coupled to the drive for varying piston displacement, and an accumulator conserves force by decelerating a translating assembly at the end of one stroke and accelerating the assembly in a subsequent stroke.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: January 22, 2019
    Assignee: NUOVO PIGNONE SRL
    Inventors: Riccardo Bagagli, Leonardo Tognarelli, Massimo Bargiacchi, Alessio Capanni
  • Publication number: 20180361479
    Abstract: A method for manufacturing a component of a rotating machine comprises the steps of forming a structural inner portion by additive manufacturing from a first material; covering the structural inner portion with a protective outer portion made of a second material; the first material has a melting point higher than a second material.
    Type: Application
    Filed: December 1, 2016
    Publication date: December 20, 2018
    Inventors: Pierluigi TOZZI, Massimo GIANNOZZI, Iacopo GIOVANNETTI, Leonardo Tognarelli, Antonella DIMATTEO
  • Patent number: 10030638
    Abstract: A compressor including a pair of opposed pistons disposed in a housing and defining a compression chamber. An electromagnetic actuator reciprocatedly drives the pistons within the housing in cooperation with force accumulator. The force accumulators bank the force during a first reciprocation, decelerating the pistons, and apply the force in a subsequent reciprocation, thereby accelerating the pistons.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: July 24, 2018
    Assignee: Nuovo Pignone Srl
    Inventors: Riccardo Bagagli, Leonardo Tognarelli
  • Publication number: 20180135680
    Abstract: A method for assembling equipment on a support of a turbo-machine. The method comprises the step of mechanically assembling the equipment to a part of the support by means of a fastening device and a further step consisting of providing a coating layer of resin at the interface between the fastening device and the support part. The coating layer allows to perfectly seal the interface between the fastening device and the support part thus avoiding the oxidation of the internal surface without painting.
    Type: Application
    Filed: May 25, 2016
    Publication date: May 17, 2018
    Inventors: Fabio FORNACIARI, Leonardo TOGNARELLI, Alessandro PACCIANI, Mario BIGI
  • Patent number: 9874286
    Abstract: Disclosed is a differential pressure valve comprising: a valve body, the valve body having at least one flow inlet and one flow outlet: at least one shutter, the shutter being movable between an open position and a closed position under a differential pressure across the valve; at least one flow passage from the flow inlet to the flow outlet; at least one biasing member configured to bias the shutter towards a closed position so as to block the flow passage through the flow inlet. The biasing member is a non-linear biasing member.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: January 23, 2018
    Inventors: Riccardo Bagagli, Leonardo Tognarelli, Carmelo Maggi, Alberto Babbini
  • Publication number: 20180010691
    Abstract: A packing case for a plunger or a piston rod of a reciprocating machine comprises packing cups, each packing cup comprising a body with a hole for the passage of the plunger or rod and a sealing ring seat for housing a sealing ring which slidably bear against the plunger or rod. Packing cups are aligned with each other in series. The packing case comprises lube oil ducts for supplying lube oil from an end of the packing case to the sealing ring seat. Each packing cup comprises sectors, each sector comprising at least lube oil duct portions. The packing cups are positionable to bring, one sector at a time in an activation position where some of the lube oil duct portions of the sector are connected with the lube oil duct portions of an adjacent packing cup to form lube oil ducts. The packing cups are lockable.
    Type: Application
    Filed: November 27, 2015
    Publication date: January 11, 2018
    Applicant: Nuovo Pignone Srl
    Inventors: Carmelo MAGGI, Jan Pawel WOJNAR, Michele SANESI, Leonardo TOGNARELLI
  • Publication number: 20170350406
    Abstract: A stabilizing arrangement for a rotating shaft including a shaft being arranged substantially vertically in a machine so as to rotate during machine operation, first pressure delivery system for delivering a fluid pressure, in particular of a fluid circulating inside the machine, at a first location of the machine. First location is close to the shaft and part of first pressure delivery system is arranged at first location so as to exert a lateral pulling or pushing action on the shaft.
    Type: Application
    Filed: November 26, 2015
    Publication date: December 7, 2017
    Inventors: Andrea MASSINI, Leonardo TOGNARELLI, Carlo Maria MARTINI
  • Publication number: 20170350380
    Abstract: Fluid flow adapter for a cylinder of a reciprocating compressor, the cylinder having a side wall provided with a valve seat, the fluid flow adapter comprising a filler element having an internal surface facing an internal volume of the cylinder and an external surface facing the valve, the filler element having at least a channel connecting the internal surface to the external surface, wherein the internal surface is flush with the side wall of the cylinder, the channel being configured to allow the passage of fluid between the internal volume of the cylinder and the valve.
    Type: Application
    Filed: November 24, 2015
    Publication date: December 7, 2017
    Inventors: Riccardo Bagagli, Leonardo Tognarelli, Alberto Babbini, Massimo Bargiacchi, Guido Pratelli, Federico Puccinelli, Riccardo Maleci
  • Publication number: 20170328237
    Abstract: A sector for the assembly of a stage of a turbine comprises a central and a peripheral portion; a plurality of blades attached between the central and the peripheral portions; a first and a second side opposite to each other, the first side is configured to join with the second side of another sector, the first side is provided with a first connecting portion and the second side is provided with a second connecting portion configured to mate with a first connecting portion of a first side of another sector.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 16, 2017
    Applicant: Nuovo Pignone SRL
    Inventors: Giacomo BENCINI, Fabio FORNACIARI, Leonardo TOGNARELLI, Pierluigi TOZZI
  • Patent number: 9810230
    Abstract: An impeller for a turbo-machine is provided. The impeller includes a metallic base having a back surface and a front surface opposite to the back surface; at least one blade extending on the front surface of the metallic base; a composite shroud attached to the at least one blade such that plural closed paths are formed by the front surface of the metallic base, the at least one blade and the composite shroud; and a connector configured to attach the composite shroud to the metallic base or the at least one blade.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: November 7, 2017
    Inventors: Iacopo Giovannetti, Massimo Giannozzi, Dino Bianchi, Leonardo Tognarelli, Manuele Bigi, Andrea Massini
  • Patent number: 9790932
    Abstract: An actuated rotary valves for reciprocating compressors used in oil and gas industry, the valve including a stator with a stator opening, a rotor with a rotor opening, and an actuation mechanism. The actuation mechanism is configured to receive a rotation motion and to actuate the rotor to perform first an axial translation moving away from the stator and then a rotation. The actuation mechanism includes an outer shaft configured to receive the rotation motion, and an inner shaft inside the outer shaft and configured to rotate the rotor. The outer shaft is configured to rotate a predetermined angular displacement while pushing the rotor away from the stator before engaging the inner shaft to rotate together with the rotor.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: October 17, 2017
    Assignee: Nuovo Pignone S.P.A.
    Inventors: Riccardo Bagagli, Leonardo Tognarelli
  • Publication number: 20170260997
    Abstract: A method for manufacturing impellers is described. The method provides for manufacturing a plurality of tubular components, each tubular component forming an inner passage, which is shaped as one of the flow passages of the final impeller. The tubular components are assembled together forming a semi-finished impeller. The semi-finished impeller is provided with annular cavities extending around the rotation axis of the impeller and gaps between adjacent tubular components. The gaps and cavities are filled with metal powder and the semi-finished impeller is subject to hot isostatic pressing, to densify the metal powder and form a monolithic final impeller.
    Type: Application
    Filed: July 2, 2015
    Publication date: September 14, 2017
    Applicant: Nuovo Pignon SrI
    Inventors: Paolo MOLA, Gabriele MASI, Mihirkumar Pravinbhai PATEL, Leonardo TOGNARELLI, Federico IOZZELLI
  • Publication number: 20160348661
    Abstract: A system for driving a reciprocating compressor is disclosed. The system includes a reciprocating compressor with a crankshaft. A Stirling engine is drivingly connected to the crankshaft of the reciprocating compressor. A heat source, for example a waste heat source, provides heat to the hot end of the Stirling engine. Heat is partly converted into mechanical power to drive the reciprocating compressor.
    Type: Application
    Filed: January 27, 2015
    Publication date: December 1, 2016
    Inventors: Leonardo TOGNARELLI, Ricardo BAGAGLI, Francesco BUFFA, Marco SANTINI
  • Publication number: 20160341188
    Abstract: The CNG system comprises a gas inlet line and a reciprocating compressor arranged and configured for compressing gas from the gas inlet line and delivering compressed gas towards a dispenser. A Stirling engine is drivingly connected to the reciprocating compressor. A burner receives gas from the gas inlet line and generates thermal energy for powering the Stirling engine.
    Type: Application
    Filed: January 30, 2015
    Publication date: November 24, 2016
    Inventors: Leonardo TOGNARELLI, Marco SANTINI, Francesco BUFFA