Patents by Inventor Randall L. Trout

Randall L. Trout 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).

  • Patent number: 5348086
    Abstract: A combination clean-out and fishing tool for use under rotary power in a well bore. The tool is adapted for connection to the drill string by means of an elongated connector sub. The connector sub then carries a cylindrical sleeve thereon which houses a cylindrical hub secured within the sleeve by means of shear pins. A cylindrical extension then secures below the cylindrical sleeve to support a clean-out tool of selected type therebelow while the hub and extension sub carrying a selected fishing tool are inside the cylindrical extension. After rotary operation of the clean-out tool to expose the fish, sufficient weight jarring the drill stem shears the shear pins to lower the connector sub, hub, extension sub and fishing tool into rotary engagement with the fish.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: September 20, 1994
    Inventor: Randall L. Trout