Patents Examined by Jerome W. Masie, IV
  • Manifold arrangement for use with a top drive power unit
    Patent number: 4854383
    Abstract: A manifold arrangement for use with a top drive power unit to enable fluid circulation to be conducted to a well string for well bore conditioning to be effected with cementing plugs in place in the manifold arrangement and for conducting a pumpable substance such as cement to the well string without first circulating it through the top drive power unit.
    Type: Grant
    Filed: September 27, 1988
    Date of Patent: August 8, 1989
    Assignee: Texas Iron Works, Inc.
    Inventors: Ronald D. Arnold, Gerald R. Atol, Samuel F. Baker