Patents by Inventor Shawn M. Callahan

Shawn M. Callahan 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).

  • High fatigue life fittings for high-pressure fluid systems
    Patent number: 8430430
    Abstract: A fitting for collecting or distributing high-pressure fluid via fluid transmission lines is provided. The fitting includes a body, and a plurality of apertures formed in the body in a common plane, intersecting inside the body such that all of the apertures are in mutual fluid communication. Each of the apertures is configured to receive a threaded coupling member of a respective high-pressure transmission line. The fitting also includes first and second compression members positioned on opposing sides of the body and coupled thereto so as to exert a compressing bias to the body in an axis perpendicular to the common plane. The compression members each comprise a raised contact surface corresponding to the region of the body where the plurality of apertures meet, and through which the compressing bias is exerted. The fitting may be an elbow-fitting, a tee fitting, a cross-fitting, or some other configuration.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: April 30, 2013
    Assignee: Flow International Corporation
    Inventors: Chidambaram Raghavan, Mohamed A. Hashish, Olivier L. Tremoulet, Jr., Shawn M. Callahan, Bruce M. Schuman
  • Device and method for maintaining a static seal of a high pressure pump
    Patent number: 8277206
    Abstract: A pressure enclosure includes a first component having an opening, a second component coupled to the first component in a position over the opening, a third component positioned between the first and second components and covering the opening, and a load chamber defined by a space between the second and third components and configured such that pressure in the load chamber biases the third component against the first component to seal the opening. The pressure enclosure may be a cylinder of a pump for pressurizing fluid or gas, with the first component a cylinder body, the second component an end cap and the third component a valve body, with the load chamber biasing the valve body against the cylinder body.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: October 2, 2012
    Assignee: Flow International Corporatioin
    Inventors: Chidambaram Raghavan, Kraig T. Kostohris, Katherine M. Madden, Shawn M. Callahan, Sigurd C. Mordre, Mohamed A. Hashish, Olivier L. Tremoulet, Jr.
  • HIGH FATIGUE LIFE FITTINGS FOR HIGH-PRESSURE FLUID SYSTEMS
    Publication number: 20100224270
    Abstract: A fitting for collecting or distributing high-pressure fluid via fluid transmission lines is provided. The fitting includes a body, and a plurality of apertures formed in the body in a common plane, intersecting inside the body such that all of the apertures are in mutual fluid communication. Each of the apertures is configured to receive a threaded coupling member of a respective high-pressure transmission line. The fitting also includes first and second compression members positioned on opposing sides of the body and coupled thereto so as to exert a compressing bias to the body in an axis perpendicular to the common plane. The compression members each comprise a raised contact surface corresponding to the region of the body where the plurality of apertures meet, and through which the compressing bias is exerted. The fitting may be an elbow-fitting, a tee fitting, a cross-fitting, or some other configuration.
    Type: Application
    Filed: May 21, 2010
    Publication date: September 9, 2010
    Applicant: Flow International Corporation
    Inventors: Chidambaram Raghavan, Mohamed A. Hashish, Olivier L. Tremoulet, JR., Shawn M. Callahan, Bruce M. Schuman
  • High fatigue life fittings for high-pressure fluid systems
    Patent number: 7748750
    Abstract: A fitting for collecting or distributing high-pressure fluid via fluid transmission lines is provided. The fitting includes a body, and a plurality of apertures formed in the body in a common plane, intersecting inside the body such that all of the apertures are in mutual fluid communication. The fitting also includes first and second compression members positioned on opposing sides of the body and coupled thereto so as to exert a compressing bias to the body in an axis perpendicular to the common plane. The compression members each comprise a raised contact surface corresponding to the region of the body where the plurality of apertures meet, and through which the compressing bias is exerted. The fitting may be an elbow-fitting, a tee fitting, a cross-fitting, or some other configuration.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: July 6, 2010
    Assignee: Flow International Corporation
    Inventors: Chidambaram Raghavan, Mohamed A. Hashish, Olivier L. Tremoulet, Jr., Shawn M. Callahan, Bruce M. Schuman
  • Device and method for maintaining a static seal of a high pressure pump
    Publication number: 20080264493
    Abstract: A pressure enclosure includes a first component having an opening, a second component coupled to the first component in a position over the opening, a third component positioned between the first and second components and covering the opening, and a load chamber defined by a space between the second and third components and configured such that pressure in the load chamber biases the third component against the first component to seal the opening. The pressure enclosure may be a cylinder of a pump for pressurizing fluid or gas, with the first component a cylinder body, the second component an end cap and the third component a valve body, with the load chamber biasing the valve body against the cylinder body.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 30, 2008
    Applicant: Flow Internationa Corporation
    Inventors: Chidambaram Raghavan, Kraig T. Kostohris, Katherine M. Madden, Shawn M. Callahan, Sigurd C. Mordre, Mohamed A. Hashish, Olivier L. Tremoulet
  • Device for maintaining a static seal of a high pressure pump
    Patent number: 7367789
    Abstract: A pressure enclosure includes a first component having an opening, a second component coupled to the first component in a position over the opening, a third component positioned between the first and second components and covering the opening, and a load chamber defined by a space between the second and third components and configured such that pressure in the load chamber biases the third component against the first component to seal the opening. The pressure enclosure may be a cylinder of a pump for pressurizing fluid or gas, with the first component a cylinder body, the second component an end cap and the third component a valve body, with the load chamber biasing the valve body against the cylinder body.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: May 6, 2008
    Assignee: Flow International Corporation
    Inventors: Chidambaram Raghavan, Kraig T. Kostohris, Katherine M. Madden, Shawn M. Callahan, Sigurd C. Mordre, Mohamed A. Hashish, Olivier L. Tremoulet, Jr.