Patents by Inventor Jeffrey Michael Calkins

Jeffrey Michael Calkins 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).

  • Debris resistant thrust bearing assembly for high speed hydraulic centrifugal turbines and pumps
    Patent number: 9683574
    Abstract: A rotating assembly adapted for use in turbines and pumps is provided. The rotating assembly includes a shroud that rotates around a central axis and a disk seated in a recess in the shroud so that the disk rotates with the shroud, the disk being oriented perpendicular to the central axis. The rotating assembly also includes a stationary element in which at least one surface of the disk contacts a fluid so that when the fluid flows under pressure, the surface of the disk resists the generation of drag between the surface and the stationary element of the rotating assembly. A shroud is provided that includes a circular recess with a cavity on an outer perimeter extending away from the fixed assembly. A method of manufacturing a rotating assembly is provided.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: June 20, 2017
    Assignee: ENERGY RECOVERY, INC.
    Inventors: Felix Winkler, Jeffrey Michael Calkins
  • DEBRIS RESISTANT THRUST BEARING ASSEMBLY FOR HIGH SPEED HYDRAULIC CENTRIFUGAL TURBINES AND PUMPS
    Publication number: 20150043845
    Abstract: A rotating assembly adapted for use in turbines and pumps is provided. The rotating assembly includes a shroud that rotates around a central axis and a disk seated in a recess in the shroud so that the disk rotates with the shroud, the disk being oriented perpendicular to the central axis. The rotating assembly also includes a stationary element in which at least one surface of the disk contacts a fluid so that when the fluid flows under pressure, the surface of the disk resists the generation of drag between the surface and the stationary element of the rotating assembly. A shroud is provided that includes a circular recess with a cavity on an outer perimeter extending away from the fixed assembly. A method of manufacturing a rotating assembly is provided.
    Type: Application
    Filed: August 26, 2014
    Publication date: February 12, 2015
    Inventors: Felix Winkler, Jeffrey Michael Calkins
  • Debris resistant thrust bearing assembly for high speed hydraulic centrifugal turbines and pumps
    Patent number: 8834028
    Abstract: A rotating assembly adapted for use in turbines and pumps is provided. The rotating assembly includes a shroud that rotates around a central axis and a disk seated in a recess in the shroud so that the disk rotates with the shroud, the disk being oriented perpendicular to the central axis. The rotating assembly also includes a stationary element in which at least one surface of the disk contacts a fluid so that when the fluid flows under pressure, the surface of the disk resists the generation of drag between the surface and the stationary element of the rotating assembly. A shroud is provided that includes a circular recess with a cavity on an outer perimeter extending away from the fixed assembly. A method of manufacturing a rotating assembly is provided.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: September 16, 2014
    Assignee: Energy Recovery, Inc.
    Inventors: Felix Winkler, Jeffrey Michael Calkins
  • DEBRIS RESISTANT THRUST BEARING ASSEMBLY FOR HIGH SPEED HYDRAULIC CENTRIFUGAL TURBINES AND PUMPS
    Publication number: 20130163900
    Abstract: A rotating assembly adapted for use in turbines and pumps is provided. The rotating assembly includes a shroud that rotates around a central axis and a disk seated in a recess in the shroud so that the disk rotates with the shroud, the disk being oriented perpendicular to the central axis. The rotating assembly also includes a stationary element in which at least one surface of the disk contacts a fluid so that when the fluid flows under pressure, the surface of the disk resists the generation of drag between the surface and the stationary element of the rotating assembly. A shroud is provided that includes a circular recess with a cavity on an outer perimeter extending away from the fixed assembly. A method of manufacturing a rotating assembly is provided.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Inventors: Felix Winkler, Jeffrey Michael Calkins