Patents Assigned to Nor-Cal Aggregate Systems
  • Neo seal socket sealing ring
    Patent number: 6446977
    Abstract: A cone rock crusher for crushing rocks into sized aggregate material, including an improved protective seal that prevents external contaminants from entering the crusher's lubrication system. The seal is a rotating, self-cleaning, socket sealing ring with a magnetic safety release device which protects the flexible membrane seal from damage.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: September 10, 2002
    Assignee: Nor-Cal Aggregate Systems
    Inventor: Anthony S. Thiede