Patents Assigned to Vann Tool Company, Inc.
  • Method of simultaneously setting a packer device and actuating a vent assembly
    Patent number: 4040485
    Abstract: A packer actuated vent assembly comprising a packer device settable by reciprocal movement of a mandrel, a valve actuator in the form of a barrel attached to the packer body, and a mandrel extension having a valve means thereon attached to the packer mandrel. The valve means is engaged by a stop member located on the barrel and is moved to the venting position when the packer mandrel is properly manipulated to seat the packer.
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: August 9, 1977
    Assignee: Vann Tool Company, Inc.
    Inventors: Roy R. Vann, Flint R. George
  • Downhole packer actuated vent assembly
    Patent number: 3931855
    Abstract: A packer actuated vent assembly comprising a packer device settable by reciprocal movement of a mandrel, a valve actuator in the form of a barrel attached to the packer body, and a mandrel extension having a valve means thereon attached to the packer mandrel. The valve means is engaged by a stop member located on the barrel and is moved to the venting position when the packer mandrel is properly manipulated to seat the packer.
    Type: Grant
    Filed: October 23, 1974
    Date of Patent: January 13, 1976
    Assignee: Vann Tool Company, Inc.
    Inventors: Roy R. Vann, Flint R. George