Patents by Inventor Andrew Trowbridge

Andrew Trowbridge 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).

  • Fail-safe high velocity flow casing shoe
    Patent number: 10760383
    Abstract: A casing shoe having a composite body portion, a coupling portion attached to one end of the body portion, and a one-way check valve assembly positioned in the body portion, the valve assembly and body portion having a centerline nozzle and a plurality of circumferentially spaced smaller diameter nozzles positioned around the centerline nozzle.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: September 1, 2020
    Assignee: WWT NORTH AMERICA HOLDINGS, INC.
    Inventors: Sarah Mitchell, Andrew Trowbridge
  • FAIL-SAFE HIGH VELOCITY FLOW CASING SHOE
    Publication number: 20180179864
    Abstract: A casing shoe having a composite body portion, a coupling portion attached to one end of the body portion, and a one-way check valve assembly positioned in the body portion, the valve assembly and body portion having a centerline nozzle and a plurality of circumferentially spaced smaller diameter nozzles positioned around the centerline nozzle.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 28, 2018
    Inventors: Sarah Mitchell, Andrew Trowbridge