Patents by Inventor Fabio Martello

Fabio Martello 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).

  • Rotary vacuum pump with circumferential groove for a lubricating and sealing fluid
    Patent number: 9388810
    Abstract: A rotary vacuum pump, for instance a vane pump, has at least one circumferential groove (6) between facing side surfaces of the rotor (2) and of the rotor guide (3) for receiving a lubricating and sealing fluid. The circumferential groove (6) is a partial annular groove, which has an angular extension of less than 360° and has at least one interruption enabling creating a hydrodynamic fluid bearing in a region opposite a discharge region of the pump (1; 101; 121; 201), over the whole axial extension of the facing surfaces. A method of lubricating a rotary vacuum pump is also provided.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: July 12, 2016
    Assignee: VHIT S.P.A.
    Inventors: Antonio Crotti, Luciano Marchetti, Fabio Martello, Johannes Muellers
  • ROTARY VACUUM PUMP
    Publication number: 20140341767
    Abstract: A rotary vacuum pump, for instance a vane pump, has at least one circumferential groove (6) between facing side surfaces of the rotor (2) and of the rotor guide (3) for receiving a lubricating and sealing fluid. The circumferential groove (6) is a partial annular groove, which has an angular extension of less than 360° and has at least one interruption enabling creating a hydrodynamic fluid bearing in a region opposite a discharge region of the pump (1; 101; 121; 201), over the whole axial extension of the facing surfaces. A method of lubricating a rotary vacuum pump is also provided.
    Type: Application
    Filed: October 10, 2012
    Publication date: November 20, 2014
    Applicant: VHIT S.P.A.
    Inventors: Antonio Crotti, Luciano Marchetti, Fabio Martello, Johannes Muellers