Patents by Inventor Steven Edward Hackman

Steven Edward Hackman 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).

  • Retention means for a seal boot used in a universal joint in a downhole motor driveshaft assembly
    Patent number: 9534638
    Abstract: A driveshaft assembly for a downhole motor comprises a housing and a driveshaft rotatably disposed within the housing. The driveshaft has a central axis and a first end. Further, the driveshaft assembly comprises a driveshaft adapter having a first end coupled to the first end of the driveshaft with a universal joint. The first end of the driveshaft adapter includes a counterbore. The first end of the driveshaft and the universal joint are disposed in the counterbore. Still further, the driveshaft assembly comprises an end cap disposed about the driveshaft and coaxially coupled to the adapter. Moreover, the driveshaft assembly comprises a seal boot disposed about the driveshaft and adapted to restrict fluid flow through a annular gap positioned between the driveshaft and the end cap. The driveshaft assembly also comprises a locking assembly adapted to restrict the end cap from moving axially relative to the adapter.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: January 3, 2017
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: Nicholas Ryan Marchand, Jeremy Scott Clements, Steven Edward Hackman, Tyler Jarret Dyck
  • Retention Means for a Seal Boot Used in a Universal Joint in a Downhole Motor Driveshaft Assembly
    Publication number: 20110005839
    Abstract: A driveshaft assembly for a downhole motor comprises a housing and a driveshaft rotatably disposed within the housing. The driveshaft has a central axis and a first end. Further, the driveshaft assembly comprises a driveshaft adapter having a first end coupled to the first end of the driveshaft with a universal joint. The first end of the driveshaft adapter includes a counterbore. The first end of the driveshaft and the universal joint are disposed in the counterbore. Still further, the driveshaft assembly comprises an end cap disposed about the driveshaft and coaxially coupled to the adapter. Moreover, the driveshaft assembly comprises a seal boot disposed about the driveshaft and adapted to restrict fluid flow through a annular gap positioned between the driveshaft and the end cap. The driveshaft assembly also comprises a locking assembly adapted to restrict the end cap from moving axially relative to the adapter.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 13, 2011
    Applicant: National Oilwell Varco, L.P.
    Inventors: Nicholas Ryan Marchand, Jeremy Scott Clements, Steven Edward Hackman, Tyler Jarret Dyck