Collapsible Lazy Tong Group Patents (Class 172/648)
  • Patent number: 5964167
    Abstract: A variable width field implement includes a central frame and wing assemblies which are pivotally attached to the central frame. Implement elements are pivotally attached to the wing assemblies. The field implement utilizes a collapsible parallelogram geometry and pivotal connections to allow the width between implement elements to be altered while at the same time the elements retain an orientation that is parallel to the direction of travel.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: October 12, 1999
    Inventor: Brian Moeller