Patents by Inventor Charles D. Crickmer

Charles D. Crickmer 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).

  • Well setting tool
    Patent number: 4058166
    Abstract: A well tool and more particularly a hanger or setting tool actuating assembly for hanging a liner in a well or setting various other well equipment in a desired sub-surface position. The actuating assembly includes a magnet which is moved by means controlled remotely therefrom to cause a member magnetically coupled thereto to correspondingly move resulting in setting of the well equipment in the desired location.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: November 15, 1977
    Assignee: Otis Engineering Corporation
    Inventor: Charles D. Crickmer
  • Well tool
    Patent number: 4047565
    Abstract: A well tool and more particularly a hanger assembly having an improved design for more effectively, reliably and economically hanging a liner or other well equipment in a well casing or the like.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: September 13, 1977
    Assignee: Otis Engineering Corporation
    Inventor: Charles D. Crickmer
  • Buoyant counterbalancing for drill string
    Patent number: 3991837
    Abstract: A fluid actuated counterbalancing apparatus and method for maintaining substantially constant height of the upper end of a string of members suspended from a vessel floating on a body of water wherein such position is controlled by a buoyant element floating in the water in a vertical open ended tube extending downwardly into the body of water to a virtually stable water level.
    Type: Grant
    Filed: May 18, 1973
    Date of Patent: November 16, 1976
    Assignee: Joy Manufacturing Company
    Inventor: Charles D. Crickmer
  • Well tool
    Patent number: RE30988
    Abstract: A well tool and more particularly a hanger assembly having an improved design for more effectively, reliably and economically hanging a liner or other well equipment in a well casing or the like.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: July 6, 1982
    Assignee: Otis Engineering Corporation
    Inventor: Charles D. Crickmer