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Class Information
Number: 172/310
Name: Earth working > Plural wheeled implements
Description: Apparatus in which there are plural earth working devices and plural ground wheels, the different ground wheels or groups of ground wheels being intimately associated with different earth working devices or groups of earth working devices.










Sub-classes under this class:

Class Number Class Name Patents
172/312 Implement draft connection forwardly of rear of self-propelled vehicle 0
172/314 Implements in echelon (e.g., gang plows, etc.) 24
172/313 Laterally spaced with separate draft tongues 19
172/311 Outrigged implement adjustable inwardly 371


Patents under this class:

Patent Number Title Of Patent Date Issued
8646798 Drawn agricultural machine Feb. 11, 2014
8489290 Farm sidehill compensation Jul. 16, 2013
8118110 Agricultural implements with hinged and floating wings Feb. 21, 2012
7543657 Tillage apparatus having flexible frame and weight distribution system Jun. 9, 2009
6260629 Swing hitch Jul. 17, 2001
5720352 Hitch for two unit planter Feb. 24, 1998
5653292 Method and apparatus for automatically controlling the soil penetration depth of zone tillage coulters and the like Aug. 5, 1997
5413182 Improvements in frame of winged agricultural implement May. 9, 1995
5343958 Agricultural fertilizer applicator including self-leveling wagon hitch Sep. 6, 1994
5167286 Disc harrow implement Dec. 1, 1992
5129463 Conservation tillage implement convertible for end transport Jul. 14, 1992
5044447 Guide and control device for an agricultural machine Sep. 3, 1991
5042589 Multi-tine cultivator frame suspension and adjustment mechanism Aug. 27, 1991
5020604 Dual tillage implement Jun. 4, 1991
5000268 Lifting assembly for agricultural implements Mar. 19, 1991
4977964 Resilient planar framework for supporting multiple groundworking tools Dec. 18, 1990
4974683 Ridge tillage attachment for planters Dec. 4, 1990
4871028 Articulated implement frame with swing hitch Oct. 3, 1989
4869327 Reversible one-way disk plow Sep. 26, 1989
4846084 Leveling linkage for planter units Jul. 11, 1989
4834189 Row crop cultivator May. 30, 1989
4819737 Row crop cultivator Apr. 11, 1989
4750440 Hoe-opener assembly Jun. 14, 1988
4738315 Hydraulic control apparatus including master cylinder with multiple limit positions Apr. 19, 1988
4702323 Ridge tillage attachment for planters Oct. 27, 1987
4700641 Pivoting spring-cushioned press wheel gang assembly Oct. 20, 1987
4676321 Framework for ground working implement Jun. 30, 1987
4601484 Implement pulling hitch assembly Jul. 22, 1986
4591181 Hinge-wing drawbar mechanism May. 27, 1986
4567689 Vineyard cultivator Feb. 4, 1986
4539921 Drill frame construction Sep. 10, 1985
4519460 Compaction and support apparatus May. 28, 1985
4487267 Agricultural apparatus with tool supported thereon and wheel adjustment structure therefor Dec. 11, 1984
4445706 Tandem hitch apparatus May. 1, 1984
4417747 Agricultural transporter Nov. 29, 1983
4406329 Agricultural tool cart for minimum tillage and seed planting Sep. 27, 1983
4396069 Agricultural implement carriage system Aug. 2, 1983
4346763 Agricultural implement sectional frame with depth limit Aug. 31, 1982
4186805 Ground working implement Feb. 5, 1980
4167978 Field cultivator Sep. 18, 1979
4157735 Endwise transport structure for drills Jun. 12, 1979
4127283 Multiple drill hitch assembly Nov. 28, 1978
4109928 Sectional grain drill hitch Aug. 29, 1978
4102404 Articulated cultivator Jul. 25, 1978
4036306 Multi-unit adjustable plow pulled by vehicle and having steering wheel turnable only on adjustment of plow Jul. 19, 1977
3965989 Flexible plow Jun. 29, 1976











 
 
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