Patents by Inventor David Scott Crew, JR.

David Scott Crew, JR. 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).

  • Liner lock flange for a piston pump
    Patent number: 11125331
    Abstract: A piston pump includes a frame, a housing configured to be coupled to the frame via a fastener, an annular liner defining a chamber configured to receive a piston of the piston pump, and an annular liner lock flange circumferentially surrounding the annular liner. The annular liner lock flange includes a radially-extending portion configured to be positioned within a respective counterbore of the frame and a respective counterbore of the housing while the housing is coupled to the frame via the fastener to block relative movement between the liner lock flange, the frame, and the housing.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: September 21, 2021
    Assignee: Schlumberger Technology Corporation
    Inventors: Jaakko Jalmari Halmari, David Scott Crew, Jr., Jeffrey Boardman Pruitt, Ban Tran
  • Liner Lock Flange for A Piston Pump
    Publication number: 20200049144
    Abstract: A piston pump includes a frame, a housing configured to be coupled to the frame via a fastener, an annular liner defining a chamber configured to receive a piston of the piston pump, and an annular liner lock flange circumferentially surrounding the annular liner. The annular liner lock flange includes a radially-extending portion configured to be positioned within a respective counterbore of the frame and a respective counterbore of the housing while the housing is coupled to the frame via the fastener to block relative movement between the liner lock flange, the frame, and the housing.
    Type: Application
    Filed: August 9, 2018
    Publication date: February 13, 2020
    Inventors: Jaakko Jalmari Halmari, David Scott Crew, JR., Jeffrey Boardman Pruitt, Ban Tran