Patents Assigned to AB Castings
  • Pile connecting device
    Patent number: 4143985
    Abstract: A connecting device is described in which two complementary connecting elements comprise several interengaging locking portions with holes for driving pins thereinto to interlock the connecting elements, and spaces inside the locking portions to permit continued driving of the pins thereinto to thereby realize unlocking of the connecting elements.
    Type: Grant
    Filed: September 13, 1977
    Date of Patent: March 13, 1979
    Assignee: AB Castings
    Inventors: Gunborg H. V. Axelsson, Kristina E. I. Axgarde