Back to results
US 2003/0188905 A1Published application
Pivoting hooks for parallelogram lift linkages
AssigneeDeere & Company
InventorSteven Henry Buss
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeDeere & Company
InventorSteven Henry Buss
Estimating the term…
Pivoting hooks usable with four bar parallelogram implement lift linkages are provided. The hooks are pivotally attached at the forward edge of the implement to receive the cross bar of a suspension mechanism such as that taught in U.S. Pat. No. 5,025,617. The pivotal connection and axis about which the hooks are supported on the deck comprise one corner of the four bar parallelogram lift linkage. The hooks pivot forwardly and downwardly to receive the cross bar and then swing up as tension is applied to the hanger to support the deck. As the cross bar slides forwardly into the throats of the hooks when the hanger is tensioned, it is retained in the proper parallelogram lift geometry so that the deck remains level as it is adjusted throughout its vertical cutting height. The use of the pivoting hooks permits decks with extended fore and aft dimensions to be used with existing four bar parallelogram designs.
A hook, in combination with an implement supported by a vehicle, the hook being securable to a forward portion of the implement and pivotable about a laterally extending axis, the axis comprising one pivot corner of a four bar parallelogram lift linkage.
An implement supported by a vehicle, the implement comprising a hook, the hook being pivotable about a laterally extending axis, the axis comprising one pivot corner of a four bar parallelogram lift linkage.
An implement adapted for connection with a vehicle, the implement comprising a hook, the hook being pivotable about a laterally extending axis, the axis comprising one pivot corner of a four bar parallelogram lift linkage.
An implement supported by a vehicle, the implement comprising a hook, the hook being moveable, a four bar parallelogram lift linkage, an extent of which comprises a laterally extending axis relative to which the hook is moveable.
Dependencies are inferred from the claim text.