Patents by Inventor Thomas E. Ritter

Thomas E. Ritter 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).

  • Method and apparatus for providing accurate wireline depth measurements
    Patent number: 4577410
    Abstract: For use with a wireline supporting a tool in a well borehole, length measuring apparatus is disclosed. In the preferred form, the length measuring apparatus comprises a housing around the wireline locus, rollers clamping the wireline, and helix following wheels. The wheels track the helix of the wireline around the wireline, rotating on a bearing assembly, and driving a chain. The chain drives an encoder to record length of the wireline in the well borehole.
    Type: Grant
    Filed: June 11, 1985
    Date of Patent: March 25, 1986
    Assignee: Halliburton Company
    Inventor: Thomas E. Ritter