Apparatus for simultaneously vibrating specimens in multiple directions
Patent 4748851 Issued on June 7, 1988. Estimated Expiration Date: 
December 22, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 22, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesControlled motion apparatus Method and apparatus for two-axis screening vibration Patent #: 4498343 InventorAssigneeApplicationNo. 06/944205 filed on 12/22/1986US Classes:73/668Electromagnetically vibratedExaminersPrimary: Levy, Stuart S.Assistant: Fess, Lawrence G. Attorney, Agent or FirmInternational ClassesG01M 7/00 (20060101)G01M 7/06 (20060101) Foreign Application Priority Data1986-12-26 JPAbstractApparatus and method for vibrating a specimen in multiple directions. Exciters for vibration in the X and Y orthogonal directions are coupled to shafts extending through orifices in the hollow vibrator to X and Y control plates on the inside of the vibrator in contact with the interior walls thereof to move the vibrator in X and Y directions. A Z-axis exciter is coupled to the base of the vibrator for moving it in the Z-axis direction. The orifices for the X and Y-axis exciter shafts are sufficiently large to allow Z-axis movement of the vibrator without affecting the motions of the X and Y shafts. | |
