Patents by Inventor Lance T. Robinson

Lance T. Robinson 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: 9885353
    Abstract: A reciprocating well pump assembly has a barrel and a piston reciprocally carried within the barrel between up stroke and down stroke positions. A travelling valve moves with the piston and has a closed position during the up stroke an open position during the down stroke. A relief port extends from a bore of the piston below the travelling valve into the barrel. A valve sleeve mounted around the body of the travelling valve is axially movable between a closed position, closing the tubular body relief port, and an open position, communicating well fluid in the barrel with the well fluid in the bore of the piston. When nearing the top of the stroke, the valve sleeve abuts a stop in the barrel. Continued upward movement of the piston causes the valve sleeve to open the relief port.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: February 6, 2018
    Assignee: Baker Hughes, a GE Company, LLC
    Inventors: Steven K. Tetzlaff, Lance T. Robinson, Gary L. James
  • Patent number: 9777560
    Abstract: A well fluid submersible pump assembly includes a pump operatively coupled to a motor and a seal section located between the motor and the pump. The seal section has a single piece tubular housing with adapters secured to opposite ends of the housing. A shaft extends axially through the housing for driving the pump. An auxiliary seal carrier located in the housing has a central bore through which the shaft extends and has an outer diameter portion that seals to the bore of the housing. Opposed check valves in the seal carrier allow lubricant to flow from one side of the auxiliary carrier to an opposite side of the seal carrier in response to a selected pressure differential. A mechanical face seal mounts to the auxiliary seal carrier and seals around the shaft.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: October 3, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Lance T. Robinson, Kevin R. Bierig, Daniel A. Shaffer
  • Patent number: 9726166
    Abstract: A well pump includes a plunger reciprocally carried within a barrel between up stroke and down stroke positions. A tubular linear actuator housing located below the barrel has a rotatable rotor. An array of rotor magnets is mounted to the rotor, directing rotor magnetic fields in an outward direction. A cage is fixed against rotation relative to the housing and carried within the housing for axial movement relative to the rotor and the housing. The cage has a cylindrical inner sidewall surrounding the outer sidewall of the rotor. An array of cage magnets is mounted to the inner sidewall of the cage. The cage magnets direct cage magnetic fields in an inward direction relative to the axis. The cage and rotor magnetic fields interact such rotation of the rotor causes axial movement of the cage. A motor rotates the rotor.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: August 8, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Peter F. Lawson, Kevin R. Bierig, Lance T. Robinson, Sean A. Cain
  • Publication number: 20160169215
    Abstract: A well pump includes a plunger reciprocally carried within a barrel between up stroke and down stroke positions. A tubular linear actuator housing located below the barrel has a rotatable rotor. An array of rotor magnets is mounted to the rotor, directing rotor magnetic fields in an outward direction. A cage is fixed against rotation relative to the housing and carried within the housing for axial movement relative to the rotor and the housing. The cage has a cylindrical inner sidewall surrounding the outer sidewall of the rotor. An array of cage magnets is mounted to the inner sidewall of the cage. The cage magnets direct cage magnetic fields in an inward direction relative to the axis. The cage and rotor magnetic fields interact such rotation of the rotor causes axial movement of the cage. A motor rotates the rotor.
    Type: Application
    Filed: December 10, 2014
    Publication date: June 16, 2016
    Inventors: Steven K. Tetzlaff, Peter F. Lawson, Kevin R. Bierig, Lance T. Robinson, Sean A. Cain
  • Publication number: 20160145984
    Abstract: A well fluid submersible pump assembly includes a pump operatively coupled to a motor and a seal section located between the motor and the pump. The seal section has a single piece tubular housing with adapters secured to opposite ends of the housing. A shaft extends axially through the housing for driving the pump. An auxiliary seal carrier located in the housing has a central bore through which the shaft extends and has an outer diameter portion that seals to the bore of the housing. Opposed check valves in the seal carrier allow lubricant to flow from one side of the auxiliary carrier to an opposite side of the seal carrier in response to a selected pressure differential. A mechanical face seal mounts to the auxiliary seal carrier and seals around the shaft.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 26, 2016
    Inventors: Steven K. Tetzlaff, Lance T. Robinson, Kevin R. Bierig, Daniel A. Shaffer
  • Publication number: 20160010640
    Abstract: A reciprocating well pump assembly has a barrel and a piston reciprocally carried within the barrel between up stroke and down stroke positions. A travelling valve moves with the piston and has a closed position during the up stroke an open position during the down stroke. A relief port extends from a bore of the piston below the travelling valve into the barrel. A valve sleeve mounted around the body of the travelling valve is axially movable between a closed position, closing the tubular body relief port, and an open position, communicating well fluid in the barrel with the well fluid in the bore of the piston. When nearing the top of the stroke, the valve sleeve abuts a stop in the barrel. Continued upward movement of the piston causes the valve sleeve to open the relief port.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 14, 2016
    Inventors: Steven K. Tetzlaff, Lance T. Robinson, Gary L. James
  • Patent number: 8821137
    Abstract: Systems and methods for employing gauge packages for use with a wet-connect ESPs. In one embodiment, a modular gauge package includes a body, a gauge electronics assembly housed within the body, and a pair of electrical connectors at the upper and lower ends of the body, where power is passed through the body from one connector to the other. The electrical connector at the top of the body engages a complementary electrical connector on the bottom of a pump motor. The electrical connector at the bottom of the body engages a complementary electrical connector at the end of a production conduit. The connector at the bottom of the body may be identically configured with the connector at the bottom of the pump motor, and the connector at the top of the body may be identically configured with the connector at the end of the production conduit.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: September 2, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Ken Bebak, Robert H. McCoy, Lance T. Robinson
  • Publication number: 20110311375
    Abstract: Systems and methods for employing gauge packages for use with a wet-connect ESPs. In one embodiment, a modular gauge package includes a body, a gauge electronics assembly housed within the body, and a pair of electrical connectors at the upper and lower ends of the body, where power is passed through the body from one connector to the other. The electrical connector at the top of the body engages a complementary electrical connector on the bottom of a pump motor. The electrical connector at the bottom of the body engages a complementary electrical connector at the end of a production conduit. The connector at the bottom of the body may be identically configured with the connector at the bottom of the pump motor, and the connector at the top of the body may be identically configured with the connector at the end of the production conduit.
    Type: Application
    Filed: June 22, 2011
    Publication date: December 22, 2011
    Inventors: Steven K. Tetzlaff, Ken Bebak, Robert H. McCoy, Lance T. Robinson
  • Patent number: 7921908
    Abstract: A downhole pumping system includes a submersible pump assembly having a pump and a motor, and an inlet apparatus operably coupled to the submersible pump assembly. The inlet apparatus includes a tubular housing for connection to an intake of the pump, the housing having an axis and defining a plurality of circumferentially spaced apart apertures, a plurality of valve members, each valve member positioned within a corresponding aperture, and a plurality of spring members coupled to the housing, each spring member coupled to a corresponding valve member. At least a portion of one or more of the spring members and the valve members extend above the outer surfaces of the housing.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: April 12, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Lance T. Robinson
  • Publication number: 20100065280
    Abstract: An inlet apparatus for a submersible well pump.
    Type: Application
    Filed: September 18, 2008
    Publication date: March 18, 2010
    Applicant: BAKER HUGHES INC.
    Inventors: Steven K. Tetzlaff, Lance T. Robinson