Patents by Inventor Glenn E. Hobbs

Glenn E. Hobbs 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).

  • Polyurethane stator for a progressive cavity pump
    Publication number: 20030003000
    Abstract: A progressive cavity pump including a shell, a stator removably affixed within the shell, a rotor positioned interior of the stator within the shell and a motor interconnected to the rotor so as to rotate the rotor. The stator is formed of polyurethane material. The polyurethane material of the stator has a durometer hardness of 50-98 shore. The polyurethane material of the stator has an operating temperature of between 212° F. and 400° F. The polyurethane material of the stator had a tensile stress of between 100-5100 p.s.i. The stator is positioned between the fluid inlet and outlet of the shell.
    Type: Application
    Filed: June 29, 2001
    Publication date: January 2, 2003
    Inventors: Samuel L. Shepherd, Glenn E. Hobbs