Patents by Inventor Francisco Kobata

Francisco Kobata 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).

  • Running tool that prevents seal test
    Patent number: 8286711
    Abstract: A running tool sets a casing hanger packoff and ensures that the packoff is not pressure tested unless the proper setting stroke was made by the running tool. The running tool has a stem, an inner body, and a piston. The inner body is connected to the stem so that rotation of the stem relative to the inner body will cause the stem to move longitudinally. The piston is connected to the stem so that the stem and piston rotate and move longitudinally in unison. A test slot is located in the outer surface of the inner body. A limit pin is connected to the piston and is adapted to engage the test slot when the piston moves longitudinally relative to the inner body. The stem has a raised profile on a portion of its exterior surface.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: October 16, 2012
    Assignee: Vetco Gray Inc.
    Inventors: Guilherme Pedro Eppinghaus Neto, Francisco Kobata, Nicholas P. Gette
  • Running Tool That Prevents Seal Test
    Publication number: 20100326664
    Abstract: A running tool sets a casing hanger packoff and ensures that the packoff is not pressure tested unless the proper setting stroke was made by the running tool. The running tool has a stem, an inner body, and a piston. The inner body is connected to the stem so that rotation of the stem relative to the inner body will cause the stem to move longitudinally. The piston is connected to the stem so that the stem and piston rotate and move longitudinally in unison. A test slot is located in the outer surface of the inner body. A limit pin is connected to the piston and is adapted to engage the test slot when the piston moves longitudinally relative to the inner body. The stem has a raised profile on a portion of its exterior surface.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Applicant: Vetco Gray Inc.
    Inventors: Guilherme Pedro Eppinghaus Neto, Francisco Kobata, Nicholas P. Gette