Pivoting hooks for parallelogram lift linkages

Details Pivoting hooks for parallelogram lift linkages Pivoting hooks for parallelogram lift linkages

A - Human Necessities

01

B

A01B 63/02 (2006.01) A01B 51/00 (2006.01) A01D 34/64 (2006.01)

Patent

CA 2373660

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. Patent 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.

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