Patents by Inventor John E. Strecker

John E. Strecker 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).

  • Automatic direction control for omni-directional shear wave sources
    Patent number: 5062061
    Abstract: A system to control the orientation of a seismic source includes a signal processor that receives an input signal from a compass to provide an input orientation for the vibrator control electronics of an omnidirectional shear wave source. By orienting the signal generation in this manner, the need to orient the truck is obviated without negatively impacting the quality of the data. The signal processor can be eliminated if the compass output signal is already in a form that can be used by the vibrator control electronics.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: October 29, 1991
    Assignee: Conoco Inc.
    Inventors: John E. Strecker, Truman R. Stiner
  • Apparatus for inducing elliptically polarized shear waves in an earth medium
    Patent number: 4922472
    Abstract: The present invention relates to a method for generation of elliptically polarized shear waves in an earth medium using two shear wave vibrators engaged to the earth medium in cross-polarized attitude and driven at sweep rates having variable phase displacement.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: May 1, 1990
    Assignee: Conoco Inc.
    Inventors: Jack H. Cole, John S. Gergely, Robert T. Baumel, John E. Strecker