Patents by Inventor Wilfred K. Lenhardt

Wilfred K. Lenhardt 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).

  • Recording system for a borehole logging tool
    Patent number: 4538248
    Abstract: A borehole logging system includes a borehole logging tool, a logging tool depth encoder for indicating rate of movement of the logging tool, a moving recording medium, and a recording encoder for indicating the actual rate of movement of the recording medium. The logging rate indicated by the depth encoder is used to provide a signal representative of a desired recording rate. This desired recording rate is compared to the actual recording rate and correction made to the recording rate when there is a variance between such desired and actual recording rates.
    Type: Grant
    Filed: April 1, 1982
    Date of Patent: August 27, 1985
    Assignee: Mobil Oil Corporation
    Inventor: Wilfred K. Lenhardt