US Patent No: 7,958,707
Number of patents in Portfolio can not be more than 2000
Non-parallel four-bar linkage for suspending an agricultural implement header
Stats
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Jun 14, 2011
Issued date -
Apr 14, 2010
filing date -
12/760,081
serial no -
In Force
status
Importance
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Abstract
A suspension system for agricultural implements having at least one floating head using a four-bar linkage and permitting the floating head to accommodate variations in ground surface elevation in a lateral or transverse direction. By permitting the floating head to float, a more consistent cutting height is realized when ground surface elevation varies in a transverse direction. A main frame is provided to which the ground engaging wheels are attached. A sub-frame is connected to the main frame via the four-bar linkage and the linkage arms of the four-bar linkage are not parallel to one another as viewed from above. The linkage arms of the four-bar linkage are pivotally attached to the main frame and sub-frame by spherical bearings.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,723,396 Mower | 40 | 1986 | |
| 4,719,742 Mowing machine | 46 | 1987 | |
| 4,848,069 Mower | 25 | 1987 | |
| 4,970,848 Mower with release safety device | 17 | 1990 | |
| 5,107,663 Farm machine having a deformable suspension mechanism | 40 | 1990 | |
| 5,060,462 Mower having a lightening mechanism | 53 | 1990 | |
| 5,094,063 Mower including a group of working elements extending crosswise to a direction of advance at work | 46 | 1990 | |
| 5,417,042 Farm machine with improved load-lightening and lifting device | 35 | 1993 | |
| 5,357,737 Mower having a device for driving processing rollers of the mower | 31 | 1993 | |
| 5,992,133 Agricultural machine for harvesting plant matter, with two conditioning units | 24 | 1997 | |
| 6,055,800 Agricultural cutting machine comprising an improved suspension device for the cutting mechanism | 21 | 1998 | |
| 6,125,619 Implement or machine comprising a working unit articulated to a carrying structure, and method of articulation | 9 | 1998 | |
| 6,085,501 Automatic adjusting for lightening a machine working unit: method, device and machine | 20 | 1998 | |
| 6,345,490 Agricultural machine including a locking mechanism for preventing a double-rod ram from rotating around its longitudinal axis | 10 | 1999 | |
| 6,269,619 Mower with a centralized device for adjusting the lightening force exerted on the harvesting mechanism | 17 | 1999 | |
| 6,308,504 Device for treating cut fodder and mower employing such a treatment device | 14 | 2000 | |
| 6,381,935 Cutting machine comprising a cutting device connected to a chassis by means of an improved connecting device | 16 | 2000 | |
| 6,907,719 Agricultural implement comprising a transporting device | 13 | 2003 | |
| 2006/0248,870 Machine for gathering products such as grass | 10 | 2004 | |
| 2007/0144,130 Hay-harvest machine provided with a hinged frame | 8 | 2004 | |
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| 4,216,975 Tractor hitch | 20 | 1978 | |
| 6,186,043 Cushion hydraulic cylinder | 13 | 1999 | |
| 6,250,055 Suspension for a mowing unit | 14 | 1999 | |
| 6,758,031 Cutting angle adjustment for mowing heads | 21 | 2002 | |
| 7,024,844 Agricultural bi-mower with cantilever beam suspension | 12 | 2004 | |
| 7,047,714 Tongue swing cylinder arrangement for rotary side-pull mower-conditioner | 10 | 2005 | |
| 7,370,460 Drawn cotton picker | 4 | 2006 | |
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| 6,655,118 Suspension system | 13 | 2002 | |
| 2009/0107,100 CUSHIONED SWING CYLINDER FOR AGRICULTURAL MOWER | 3 | 2007 | |
| 7,596,935 Suspension system for a floating header on an agricultural implement | 8 | 2007 | |
| 7,658,056 System for folding an agricultural machine with a floating work tool | 7 | 2007 | |
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| 4,724,661 Two piece crop harvesting header and flotation mechanism therefor | 63 | 1986 | |
| 4,723,401 Steerable wheel assembly for unitized rakes | 34 | 1986 | |
| 6,360,516 Two stage hydraulic tongue swing mechanism | 14 | 2000 | |
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| 6,588,513 Articulating hitch assembly | 11 | 2000 | |
| 6,238,170 Agricultural implement trailer | 11 | 2000 | |
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| 4,599,852 Adjustable leaf spring suspension for flexible cutterbar | 34 | 1985 | |
| 6,662,540 Method and apparatus for controlling pivotal movement of the tongue of a harvesting machine | 11 | 2002 | |
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| 2002/0027,612 Spatio-temporal channel for images | 3 | 2001 | |
| 2002/0027,612 Spatio-temporal channel for images | 3 | 2001 | |
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| 4,286,423 Crop cutting apparatus | 17 | 1979 | |
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| 6,347,504 Vehicle with a working device, especially with a chopping device | 4 | 2000 | |
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| 4,518,043 Tool apparatus with control to move tool when object approached | 96 | 1982 | |
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| 4,239,085 Side shift assembly for earth-working implements | 10 | 1979 | |
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| 5,566,536 Mower-conditioner platform suspension including single upper arm and hydraulic cylinder for platform lift | 15 | 1995 | |
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| 2004/0035,288 Cushioned hydraulic cylinder | 10 | 2002 | |
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| 5,738,316 Vertical work center | 56 | 1995 | |
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| 5,566,535 Remote header angle adjustment mechanism for swing-tongue harvesters | 20 | 1995 | |
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| 4,676,053 Quick adjust flotation apparatus for a crop harvester | 17 | 1985 | |
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| 4,351,397 Vibrating ripper | 11 | 1980 | |
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| 5,157,905 Support linkage for mounting a header on a support frame | 33 | 1991 | |
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| 5,337,544 Mower conditioner | 22 | 1992 | |
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| 5,203,154 Hay rake and merger | 34 | 1991 | |
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| 5,743,020 Three-axis continuous probe | 10 | 1996 | |
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| 4,218,865 Agricultural machines | 14 | 1979 | |
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| 4,858,698 Weight transfer linkage arrangement | 9 | 1988 | |
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| 4,207,802 Hydraulic cylinder with improved dashpot and porting | 12 | 1978 | |
| 4,345,873 Material handling vehicle | 11 | 1980 | |
| 5,193,330 Agricultural reaping or haying machine | 14 | 1990 | |
| 5,918,451 Dual lifting system for rotary hay raking machine | 7 | 1997 | |
| 6,698,113 Decelerating fluid actuator for snowplows and other heavy machinery | 9 | 2003 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Dec 14, 2014 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 14, 2018 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 14, 2022 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |