Patents by Inventor Leroy S. Finnigan

Leroy S. Finnigan 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).

  • Radial impeller and casing for centrifugal pump
    Patent number: 10094384
    Abstract: An improved impeller and a casing for a centrifugal pump are disclosed. The impeller comprises vanes which sweep an arc around an impeller axis to provide a smooth path past the impeller and through the pump. The casing is constructed to allow maximum flow rate at the eye of the impeller then shrink the flow channel to reduce internal recirculation promote efficiency, further limiting the effect of damaging forces. The impeller is suited for use in pumps in which a high head is required and in which only low shear forces must be applied to the fluid moving through the pump.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: October 9, 2018
    Assignee: MCFINN TECHNOLOGIES, LLC
    Inventors: John J McGinn, Leroy S Finnigan
  • RADIAL IMPELLER AND CASING FOR CENTRIFUGAL PUMP
    Publication number: 20150211521
    Abstract: An improved impeller and a casing for a centrifugal pump are disclosed. The impeller comprises vanes which sweep an arc around an impeller axis to provide a smooth path past the impeller and through the pump. The casing is constructed to allow maximum flow rate at the eye of the impeller then shrink the flow channel to reduce internal recirculation promote efficiency, further limiting the effect of damaging forces. The impeller is suited for use in pumps in which a high head is required and in which only low shear forces must be applied to the fluid moving through the pump.
    Type: Application
    Filed: January 23, 2015
    Publication date: July 30, 2015
    Inventors: John J. McGinn, Leroy S. Finnigan
  • Radial impeller for a centrifugal pump
    Patent number: 6595752
    Abstract: An improved impeller for a centrifugal pump is disclosed. The impeller is particularly suited for use in pumps in which a high head is required and in which only low shear forces must be applied to the fluid moving through the pump. The impeller comprises vanes which sweep an arc around an impeller axis to provide a smooth path past the impeller and through the pump. The vanes of the impeller are formed to cause the fluid moving over the vanes to apply a hydrodynamic force to the vane that opposes the force applied to the vane by fluid as the vane urges fluid through the pump. An impeller according to this invention does not require the supporting structures that are required by known impellers.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: July 22, 2003
    Inventors: John McGinn, Leroy S. Finnigan
  • Improved radial impeller for a centrifugal pump
    Publication number: 20030007871
    Abstract: An improved impeller for a centrifugal pump is disclosed. The impeller is particularly suited for use in pumps in which a high head is required and in which only low shear forces must be applied to the fluid moving through the pump. The impeller comprises vanes which sweep an arc around an impeller axis to provide a smooth path past the impeller and through the pump. The vanes of the impeller are formed to cause the fluid moving over the vanes to apply a hydrodynamic force to the vane that opposes the force applied to the vane by fluid as the vane urges fluid through the pump. An impeller according to this invention does not require the supporting structures that are required by known impellers.
    Type: Application
    Filed: July 9, 2001
    Publication date: January 9, 2003
    Inventors: John McGinn, Leroy S. Finnigan