Patent ID: 7370574
Filing Date: 2008-05-13
Classification: G01N

Abstract:
1. A device adapted to determine and maintain an angle of gyration of a mold engaged with a gyratory compactor apparatus defining an axis, the mold being generally cylindrical, defining an axis, and having opposed first and second ends, the mold being gyratable about the apparatus axis at a gyration point displaced from the second end toward the first end, said device comprising: an offsetable member adapted to be capable of engaging the second end of the mold in displacement from the apparatus axis and to be movable in an orbital motion about the apparatus axis so as to cause the mold to gyrate with respect to the gyration point, the gyration point being remotely disposed with respect to the second end of the mold; a sensor device configured to dynamically determine an actual angle of gyration of the mold, the actual angle of gyration being related to the displacement of the offsetable member, the gyration point, and the apparatus axis; and a controller operably engaged with the offsetable member so as to be capable of directing adjustment of the displacement of the offsetable member to provide a desired angle of gyration with respect to the gyration point, the controller being in communication with the sensor device and responsive thereto so as to be capable of dynamically adjusting the displacement of the offsetable member to maintain the actual angle of gyration substantially equal to the desired angle of gyration.