Friction Lock Patents (Class 172/270)
  • Patent number: 10194573
    Abstract: A harrow attachment for a tillage implement has a harrow drawbar, configured to mount to a frame member of the tillage implement, and at least one harrow rank having a rank bar supporting a plurality of harrowing tools oriented to extend away from the rank bar. An anti-tangle bracket assembly has a first pivot link coupled to the harrow drawbar and a second pivot link pivotally coupled to the at least one harrow rank. The first and second pivot links pivot about pivot axes with respect to one another within a pivotal range of movement of the at least one harrow rank from a first, extended position to a second, tripped position.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: February 5, 2019
    Assignee: DEERE & COMPANY
    Inventors: David L. Steinlage, Jerry R. Merkle, Bryan D. Blauwet, Luc Janelle, Jeremy Nefzger, Shawn J. Becker, Humberto Moreno