Patents by Inventor Hans A. K. Edelmann

Hans A. K. Edelmann 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).

  • Process and apparatus for analyzing and controlling energy transfer to the ground
    Patent number: 4755976
    Abstract: A method and apparatus for determining the occurrence and behavior of energy transference processes to the ground includes a vibrator which transfer seismic energy to the ground. Force and velocity signals are derived from acceleration signals measured at the baseplate and a reaction mass. The signals are filtered and multiplied together. The output components are separated and used for regulating the vibrator or for determining transference losses in the soil.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: July 5, 1988
    Assignee: Prakla Seismos AG
    Inventor: Hans A. K. Edelmann
  • Method and apparatus for producing shear waves for subsurface geophysical investigation
    Patent number: 4286332
    Abstract: Two or a larger even number of compressional wave producing vibrators are symmetrically disposed in two groups on opposite sides of a profile line in closely spaced relationship. The vibrators are energized by the same (or identical) sweep signals, the signals to one vibrator (or group) on one side of the line being separated in phase by 180.degree. from the signals to the vibrator or group on the other side. P-wave components are thereby cancelled, leaving the shear waves to be propagated.
    Type: Grant
    Filed: August 7, 1979
    Date of Patent: August 25, 1981
    Assignee: Prakla-Seismos GmbH
    Inventor: Hans A. K. Edelmann