Patents Examined by Manyard R. Wilbur
  • Patent number: 4078223
    Abstract: Sets of at least three geophones are oriented in different directions perpendicular to the longitudinal axis of a seismic cable in which they are assembled, so that at least one geophone in each set will detect substantially vertically-propagating reflected seismic signals when the cable is rotated in any orientation about its longitudinal axis. Arrangements may be provided to selectively enable the one geophone of each set that has its axis most nearly oriented to the vertical.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: March 7, 1978
    Assignee: Western Geophysical Co. of America
    Inventor: Booth B. Strange