Patents Assigned to Thomas A. de Lackner
  • Roller mill journal labyrinth lubrication system
    Patent number: 4989795
    Abstract: Improvements are provided for the journals used in rock grinding and similar operations to lubricate the bearings of such a journal in such a way as to prevent contaminants from ever reaching the bearings.
    Type: Grant
    Filed: November 20, 1988
    Date of Patent: February 5, 1991
    Assignee: Thomas A. de Lackner
    Inventor: Donald P. de Lackner