Patents by Inventor Chad Dannish

Chad Dannish 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).

  • Choke valve flow trim for fracture prevention
    Patent number: 7426938
    Abstract: A choke valve having flow trim components, namely a tubular cage and a flow collar or plug, and related components, designed and arranged for reduced fracturing. The invention includes a protective tubular sleeve, or insert cartridge in which the side ports are located to overlap with the intersection of axes of the inlet and outlet bores, but to avoid direct impingement of fluid along the axis of the inlet bore. In the cage, at least a pair of main flow ports are located to overlap with the intersection of the axes of the inlet and outlet bores, and are aligned with the side ports of the tubular sleeve or cartridge to communicate directly with the side ports. In this manner fluid may enter the choke valve through the inlet bore and pass through the main flow ports at reduced pressure and continue out through the outlet bore, without direct impingement on the side wall of the flow trim components.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: September 23, 2008
    Assignee: Master Flo Valve Inc.
    Inventors: Larry J. Bohaychuk, Loren Kowalchuk, Patrick Rabby, Chad Dannish
  • Choke valve flow trim for fracture prevention
    Publication number: 20060163517
    Abstract: A choke valve having flow trim components, namely a tubular cage and a flow collar or plug, and related components, designed and arranged for reduced fracturing. The invention includes a protective tubular sleeve, or insert cartridge in which the side ports are located to overlap with the intersection of axes of the inlet and outlet bores, but to avoid direct impingement of fluid along the axis of the inlet bore. In the cage, at least a pair of main flow ports are located to overlap with the intersection of the axes of the inlet and outlet bores, and are aligned with the side ports of the tubular sleeve or cartridge to communicate directly with the side ports. In this manner fluid may enter the choke valve through the inlet bore and pass through the main flow ports at reduced pressure and continue out through the outlet bore, without direct impingement on the side wall of the flow trim components.
    Type: Application
    Filed: January 18, 2006
    Publication date: July 27, 2006
    Applicant: Master Flo Valve Inc.
    Inventors: Larry Bohaychuk, Loren Kowalchuk, Patrick Rabby, Chad Dannish