Patents by Inventor William F. Pranger

William F. Pranger 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).

  • Enhanced thermal conductivity material in annular gap between electrical motor stator and housing
    Patent number: 8358043
    Abstract: A submersible electric motor has feature to enhance thermal conductivity from the motor interior to the exterior. The motor has a cylindrical housing and a stator rigidly mounted within housing. A rotatable rotor is located within the stator. A gap formed between the stator's outer diameter and the inner wall of the housing is filled with a high thermal conductivity material to improve heat transfer from the motor. The remaining portion of the housing may be filled with a dielectric lubricant that has lesser thermal conductivity than the high thermal conductivity material.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: January 22, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Ketankumar K. Sheth, John M. Knapp, Earl B. Brookbank, William F. Pranger, Thien Q. Tran, Suresha R. O'Bryan
  • ENHANCED THERMAL CONDUCTIVITY MATERIAL IN ANNULAR GAP BETWEEN ELECTRICAL MOTOR STATOR AND HOUSING
    Publication number: 20100102648
    Abstract: A submersible electric motor has feature to enhance thermal conductivity from the motor interior to the exterior. The motor has a cylindrical housing and a stator rigidly mounted within housing. A rotatable rotor is located within the stator. A gap formed between the stator's outer diameter and the inner wall of the housing is filled with a high thermal conductivity material to improve heat transfer from the motor. The remaining portion of the housing may be filled with a dielectric lubricant that has lesser thermal conductivity than the high thermal conductivity material.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 29, 2010
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Steven K. Tetzlaff, Ketankumar K. Sheth, John M. Knapp, Earl B. Brookbank, William F. Pranger, Thien Q. Tran, Suresha Roshani O'Bryan
  • Resistant components for submersible pump stages
    Patent number: 4678399
    Abstract: A centrifugal submersible pump has wear resistant features to resist erosion due to sand laden fluid from a well. The pump has diffusers and impellers located within a housing. Wear resistant inserts are secured to the diffusers and impellers. The inserts include inserts with cylindrical surfaces for radial support and sealing, and inserts with flat transverse surfaces for thrust. The inserts are preferably formed of tungsten carbide and are harder than the material of the impellers and the diffusers.
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: July 7, 1987
    Assignee: Hughes Tool Company
    Inventors: Joseph E. Vandevier, John L. Bearden, William F. Pranger, Harold L. Miller