US Patent No: 8,186,287

Number of patents in Portfolio can not be more than 2000

Depth adjustment assembly for a disc opener of an agricultural implement

ALSO PUBLISHED AS: 20110113997

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Importance

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Abstract

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A disc hub assembly includes a shouldered spindle that is secured to a disc opener frame and to which a depth adjustment arm and a gauge wheel arm are connected. The disc hub, to which a ground opener disc is mounted, is disposed on the spindle in a manner that allows the disc to rotate around the spindle. A gauge wheel is connected to the gauge wheel arm. When the depth adjustment arm is rotated between depth setting positions the gauge wheel arm is also rotated. As the gauge wheel is connected to the gauge wheel arm, rotation of the gauge wheel arm causes rotation of the gauge wheel. The depth adjustment arm is spring biased into engagement with an arc of notches on the disc opener frame. The notches define a range of positions at which the depth adjustment arm may be positioned.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CNH CANADA, LTD.SASKATOON SASKATCHEWAN S7K 3S5224

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Friggstad, Terrance A Grasswood, CA 85 162
Naylor, Matthew S - 47 60
Schilling, Robin B Saskatoon, CA 52 68

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DEERE & COMPANY (4)
4,796,550 Single angled blade coulter and fertilizer opener 24 1985
4,760,806 Conservation opener 50 1986
2008/0006,189 Boot with scraper for a fertilizer opener in an agricultural machine 4 2006
7,487,732 Boot with scraper for a fertilizer opener in an agricultural machine 7 2006
 
CNH CANADA, LTD. (2)
7,481,278 System and method for a disc opener with gauge wheel depth adjustment assembly 7 2007
2010/0107,942 Seed Boot For Double-Shoot Disc Opener 6 2008
 
CNH AMERICA LLC (1)
5,481,990 Air drill apparatus 16 1994
 
Heath Farm Equipment (1)
4,408,551 Row planter 22 1981
 
KYKLOS BEARING INTERNATIONAL, INC. (1)
6,105,251 Integrally retained bearing race with improved twisting resistance 14 1997
 
MORRIS INDUSTRIES LTD. (1)
6,659,193 Depth adjustment mechanism for farm implements 8 2002
 
SHOUP MANUFACTURING CO., INC. (1)
6,321,667 Adjustable gauge wheel for a planter 12 2000
 
Societe Sogefina, Societe de Gestion Financiere Armoricaine (1)
4,995,325 Setting wheels for seed drills 6 1989
 
Systematic Drill Head Co. Ltd. (1)
5,487,631 Machine tools 8 1994
 
Vibra Blade New Zealand Limited (1)
5,673,757 Ground opening device 3 1995
 
YETTER MANUFACTURING COMPANY (1)
5,887,664 Adjustable depth control mechanism for earth-penetrating disk 10 1997
 
Other [Check patent profile for assignment information] (2)
5,595,130 Planting unit 36 1995
5,904,107 Apparatus for reducing the effects of wear within seed planter gauge wheel hub assemblies 8 1995

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
8,720,351 Gauge wheel with improved wear characteristics 0 2012

Maintenance Fees

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3.5 Year Payment $1600.00 $800.00 $400.00 Nov 29, 2015
7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 29, 2019
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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