Patents by Inventor Renato Groppo

Renato Groppo 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: 10670035
    Abstract: The present invention relates to an impeller assembly for centrifugal pumps, comprising a first disk-like element, operatively arranged towards a coaxial inlet, facing a second disk-like element with a smaller diameter, operatively arranged towards the outlet; this second disk-like element is rigidly connected to the first disk-like element through a set of angularly spaced blades, and is centrally provided with fastening means for fastening to a drive shaft. The distinctive feature of the present invention is that the blades comprise appendices, in flat sheet form, adjacent to the second disk-like element, which are essentially located in correspondence with areas subject to lesser axial thrust.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: June 2, 2020
    Assignee: Ebara Corporation
    Inventors: Renato Groppo, Mariano Matteazzi, Dai Sakihama, Fabio Balbo
  • Patent number: 10626880
    Abstract: An impeller assembly for centrifugal pumps has two disk members that have different diameters, are arranged coaxially to a rotation axis and face each other so as to form an interspace; blades are radially arranged in the interspace; the two disk members are also centrally provided with a fastening means for fastening to a transmission shaft, which rotates about the rotation axis. The particularity of the present invention resides in having contoured vanes that protrude radially from the peripheral region of the disk member that has the smallest diameter and are arranged substantially at the blades.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: April 21, 2020
    Assignee: Ebara Corporation
    Inventors: Masashi Obuchi, So Kuroiwa, Dai Sakihama, Renato Groppo, Fabio Balbo, Mariano Matteazzi, Lucio Cardillo, Alessandro Corsini, Giovanni Delibra, Franco Rispoli
  • Publication number: 20180313358
    Abstract: The present invention relates to a shaft coupling (also referred to as a spacer coupling) that couples a motor shaft and a pump shaft while both shafts are spaced from each other. The present invention is further relates to a pump apparatus having such a shaft coupling. The shaft coupling (10) includes: a first inner circumferential surface (23) capable of contacting an outer circumferential surface of a motor shaft (6); a second inner circumferential surface (24) capable of contacting an outer circumferential surface of a pump shaft (1); a step portion (26) protruding radially inwardly from the first inner circumferential surface (23) and capable of contacting an end portion of the motor shaft (6); and a spacer portion (28) located between the step portion (26) and the second inner circumferential surface (24).
    Type: Application
    Filed: November 16, 2016
    Publication date: November 1, 2018
    Applicant: Ebara Corporation
    Inventors: So KUROIWA, Dai SAKIHAMA, Renato GROPPO, Marco GROPPO, Mauro MAULE, Nicola RIGON
  • Publication number: 20180128281
    Abstract: The present invention relates to an impeller assembly for centrifugal pumps, comprising a first disk-like element, operatively arranged towards a coaxial inlet, facing a second disk-like element with a smaller diameter, operatively arranged towards the outlet; this second disk-like element is rigidly connected to the first disk-like element through a set of angularly spaced blades, and is centrally provided with fastening means for fastening to a drive shaft. The distinctive feature of the present invention is that the blades comprise appendices, in flat sheet form, adjacent to the second disk-like element, which are essentially located in correspondence with areas subject to lesser axial thrust.
    Type: Application
    Filed: April 27, 2016
    Publication date: May 10, 2018
    Applicant: Ebara Corporation
    Inventors: Renato GROPPO, Mariano MATTEAZZI, Dai SAKIHAMA, Fabio BALBO
  • Publication number: 20180045213
    Abstract: An impeller for centrifugal pumps has a first disk element, functionally arranged toward the inlet, which is coaxial to and faces a second disk element, which is functionally arranged toward the delivery and is connected rigidly to the first disk element by virtue of a series of angularly spaced vanes and is provided centrally with a means for fixing to a transmission shaft. The particularity of the present invention resides in that the impeller includes a series of openings formed in the substantially peripheral region of the second disk element, between pairs of adjacent vanes, substantially at the areas subjected to the greatest axial thrust.
    Type: Application
    Filed: March 18, 2016
    Publication date: February 15, 2018
    Applicant: Ebara Corporation
    Inventors: Renato GROPPO, Fabio BALBO, Mariano MATTEAZZI, Masashi OBUCHI, Dai SAKIHAMA, So KUROIWA
  • Publication number: 20170260992
    Abstract: An impeller assembly for centrifugal pumps has two disk members that have different diameters, are arranged coaxially to a rotation axis and face each other so as to form an interspace; blades are radially arranged in the interspace; the two disk members are also centrally provided with a fastening means for fastening to a transmission shaft, which rotates about the rotation axis. The particularity of the present invention resides in having contoured vanes that protrude radially from the peripheral region of the disk member that has the smallest diameter and are arranged substantially at the blades.
    Type: Application
    Filed: October 8, 2015
    Publication date: September 14, 2017
    Applicant: Ebara Corporation
    Inventors: Masashi OBUCHI, So KUROIWA, Dai SAKIHAMA, Renato GROPPO, Fabio BALBO, Mariano MATTEAZZI, Lucio CARDILLO, Alessandro CORSINI, Giovanni DELIBRA, Franco RISPOLI
  • Patent number: D776166
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: January 10, 2017
    Assignee: EBARA CORPORATION
    Inventors: Masashi Obuchi, So Kuroiwa, Dai Sakihama, Renato Groppo, Fabio Balbo, Mariano Matteazzi, Lucio Cardillo, Alessandro Corsini, Giovanni Delibra, Franco Rispoli
  • Patent number: D791841
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: July 11, 2017
    Assignee: EBARA CORPORATION
    Inventors: Masashi Obuchi, So Kuroiwa, Dai Sakihama, Renato Groppo, Fabio Balbo, Mariano Matteazzi, Lucio Cardillo, Alessandro Corsini, Giovanni Delibra, Franco Rispoli