US Patent 6901729 Header lift system with hydraulic counterweight
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Patent abstract
A hydraulic lift/flotation system for the header of a crop harvesting machine wherein each side of the header is supported by a single cylinder, which performs both the flotation and lift functions. To accommodate unbalanced headers (center of gravity not centered between the lift arms), hydraulic oil is sent to the return side of the lift cylinder on the lighter side of the header, thus resulting in even raising, lowering and float.
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Patent Inventor Names
Douglas R. Otto0
Kenneth W. McLean0
Date of Patent
June 7, 2005
0Patent Application Number
108224640
Date Filed
April 12, 2004
0Patent Primary Examiner
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US Patent 6901729 Header lift system with hydraulic counterweight
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