Patents by Inventor Derryl Schroeder

Derryl Schroeder 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).

  • Drill string valve and method
    Patent number: 8727040
    Abstract: Method and drill string valve assembly for closing a conduit through which a high pressure fluid flows. The drill string valve assembly includes first, second and third portions forming an elongated housing having an inside cavity; and a drill string valve provided inside the cavity, to extend from the first portion to the third portion. The second portion has an extension that fits inside a groove of the third portion and prevents the second portion to linearly move relative to the third portion and also allows the second portion to rotate relative to the third portion, and the second portion has a distal region provided with a thread configured to engage a corresponding thread of the first portion such that a rotation of the second portion relative to the third portion determines a tight connection between the first portion and the second portion.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: May 20, 2014
    Assignee: Hydril USA Distribution LLC
    Inventors: Derryl Schroeder, Michael Friedrichs
  • Drill string valve and method
    Patent number: 8539975
    Abstract: Method and drill string valve for closing a conduit through which a high pressure fluid flows.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: September 24, 2013
    Assignee: Hydril USA Manufacturing, LLC
    Inventors: Derryl Schroeder, Michael Friedrichs
  • Drill String Valve and Method
    Publication number: 20120103619
    Abstract: Method and drill string valve assembly for closing a conduit through which a high pressure fluid flows. The drill string valve assembly includes first, second and third portions forming an elongated housing having an inside cavity; and a drill string valve provided inside the cavity, to extend from the first portion to the third portion. The second portion has an extension that fits inside a groove of the third portion and prevents the second portion to linearly move relative to the third portion and also allows the second portion to rotate relative to the third portion, and the second portion has a distal region provided with a thread configured to engage a corresponding thread of the first portion such that a rotation of the second portion relative to the third portion determines a tight connection between the first portion and the second portion.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Applicant: HYDRIL USA MANUFACTURING LLC
    Inventors: Derryl SCHROEDER, Michael FRIEDRICHS
  • Drill String Valve and Method
    Publication number: 20110100471
    Abstract: Method and drill string valve for closing a conduit through which a high pressure fluid flows.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 5, 2011
    Applicant: HYDRIL USA MANUFACTURING LLC
    Inventors: Derryl Schroeder, Michael Friedrichs