Patent ID: 7900711
Filing Date: 2011-03-08
Classification: A01B,A01C

Abstract:
1. An agricultural implement adapted to be pulled by a traction vehicle having a hitch and convertible between a use configuration and a transport configuration, said agricultural implement comprising: a carrier frame aligned generally transverse to the direction of travel of said agricultural implement, said carrier frame having an axle with plural ground engaging wheels: draft tongue means adapted for pivotal coupling at a forward portion thereof to the traction vehicle's hitch and further pivotally coupled at an aft portion thereof to said carrier frame, said draft tongue means having an upwardly extending vertically cornered post attached to an aft portion thereof, wherein said post is rotatable about a vertical pivot axis; a lift frame adapted for coupling to plural row units attached to said lift frame along the length thereof in a spaced manner, wherein said lift frame includes an integral center frame section extending generally transverse to the direction of travel of said agricultural implement in a lowered use position, and wherein said lift frame further includes a sleeve adapted for sliding engagement with said post for allowing movement of said lift frame on and along the length of said post; first displacement means coupling the aft portion of said draft tongue means to said carrier frame for pivotally moving the aft portion of said draft tongue means and said lift frame between said use position and a first elevated position for avoiding obstructions and to facilitate turning in a field; second displacement means coupling said lift frame to a lower portion of said post for moving said lift frame substantially vertically along said post between said first elevated position and a second higher elevated position; and third displacement means coupling said post to said carrier frame for rotating said post and said lift frame about said vertical pivot axis to a longitudinal position for transport.