Class 172/771 - With curved surface

Subclass of Class 172 - Earth working
Definition: Apparatus in which the earth working element has at least
No. of patents: 27
Last issue date: 09/12/2006

Number	Title	Issue Date
7104341	Low disturbance deep tillage point Ripper point structure includes a nose with a tapered top that initiates lift and fracture of compacted soil layers. The tapered top with an included angle of about 100 degrees just forward of the parting wear shin creates a parting stress which increases until the ...	09/12/2006
6557646	Mulch-till ripper An agricultural tillage implement employing a series of apparatus to perform one-pass primary tillage is disclosed. A cutting disk is the first apparatus that works the field. These disks cut the residue laterally (across the machine) and mix the majority...	05/06/2003
6199639	Hilling spade A hilling spade according to the present invention has a pair of moldboards or wings defining a plowing angle having a pointed forward end. Each wing has a central planar surface, a cutting edge, and a lower curved surface between the cutting edge and the...	03/13/2001
6098721	Tool for cultivating and hilling row crops A novel cultivator comprising a scoop and chute blade to scoop up dirt between rows of plants and direct a portion of the dirt onto a hill about the base of the plants to cover weeds without disturbing produce plant roots. A leaf lifter bar is provided to...	08/08/2000
6026908	Blade, particularly for blade-bearing chassis A blade includes at least one blade body attached to a chassis to be hitched to a tractor vehicle. The blade includes at least one part which is laterally inclined in relation to a vertical plane parallel to the tractor vehicle's line of advancement. This...	02/22/2000
5979568	Agricultural sweep having reinforcing ridge An agricultural sweep has an upwardly extending stem adapted to be secured to a tine of an agricultural implement and a ground breaking member comprised of a pair of substantially planar wings diverging rearwardly from a tip. In order to prevent bending o...	11/09/1999
5787994	Narrow profile soil opening device for agriculture material placement An opener assembly for forming a groove in soil in preparation for placement of substances in the soil broadly comprises an upright, elongated shank having a lower end and a lower mounting edge, a lowermost, groove-forming component, and fastening structu...	08/04/1998
5718295	Ground levelling blade The present invention consists of a mobile device that can be attached to the underside of existing mining machines thus eliminating the large number of ground levelling machines used in the mine, and increasing both air quality and worker productivity. T...	02/17/1998
5497836	Row cleaner A row cleaner comprising a pair of ground engageable finger wheels which are angled with respect to each other so they converge forwardly toward the center of their normal path of travel. Each of the finger wheels includes a central disc-shaped portion ha...	03/12/1996
5461994	Seed drill planting assembly A seed drill includes a novel planting assembly combining press wheels for packing angular sides of a furrow and a runner immediately behind and longitudinally aligned with the press wheel. The runner extends rearwardly from beneath the press wheel and is...	10/31/1995
5429197	Blade for a soil agitating device The present invention relates to soil agitation, and in particular to machines which are used to dig decompacted soil and agitate the turf on sporting greens, such as golf greens and football fields. The present invention in particular presents a new type...	07/04/1995
5357883	Method and apparatus for spreading a liquid slurry A trailer vehicle for distributing a fertilizing manure slurry to a field which includes a slurry distribution assembly mounted to the rear of the vehicle having four slurry distribution units, each with three plow teeth and a slurry distribution nozzle a...	10/25/1994
5309852	Seed drill A seed drill includes a novel planting assembly combining press wheels for packing angular sides of a furrow and a runner immediately behind and longitudinally aligned with the press wheel. The runner extends rearwardly from beneath the press wheel and is...	05/10/1994
4869328	Chisel plow point A chisel plow point consisting of a unitary tip section, a tip extender portion extending in the direction opposite to that of the tip section and conforming to and adapted to overlie the end section of a moldboard to present a working surface that turns ...	09/26/1989
4817732	Spider wheel for a rotary incorporator A spider wheel for a rotary incorporator for one pass incorporation of chemicals or small grains in previously tilled soil. The incorporator includes two rows of aggressive, large diameter spider wheels supported from a toolbar for rotation in the soil ab...	04/04/1989
4813491	Tillage point A tillage point for attachment to an excavating or earthmoving apparatus includes a tapered point extending below its longitudinal axis and formed by a convex top surface and concave bottom surface when viewed in side elevation. A convex protuberance axia...	03/21/1989
4808027	Compaction attachment for backhoe An improved simplified compacting apparatus for mounting on the tool-support boom of a backhoe or other tractor. The apparatus includes a lower member with a convex cylindrical compacting surface which extends through an arc of less than about 180 degrees...	02/28/1989
4787462	Cultivator sweep A sweep is disclosed for use with an earth-cultivating implement and includes an elongated body terminating in a front nose portion. A stem is provided for attaching the body to the implement. A pair of laterally extending wing members diverge rearwardly ...	11/29/1988
4697646	Deep tillage sweep An earth engaging implement comprising an earth engaging portion located forwardly and below an integral socket portion which socket is tapered in cross-section from its top toward its junction with the earth engaging portion and includes strengthening ad...	10/06/1987
4583599	Ground working sweep A ground working sweep comprises a flange for supporting the sweep body and provides two cutting edges lying in a horizontal plane extending rearwardly and outwardly from a central point at the front of the sweep. The point lies forwardly and below the fl...	04/22/1986
4313503	Agricultural implement An agricultural implement having a primary frame on which is mounted an adjustable secondary support frame through connecting links and depth control screws enabling adjustment of the secondary support frame relative to the primary frame while maintaining...	02/02/1982
4275792	Shovel with soil directing structure A twisted shovel, for a chisel plow or similar implement, having a concave twisted surface. The concave surface maintains soil flow in the desired path as the shovel is moved forwardly through the soil. The soil displaced by the shovel is directed more ef...	06/30/1981
4130820	Mulcher attachment for cultivator A bracket structure is provided for attachment to the rock shaft of a draft implement and a swing arm having front and rear ends is pivotally attached at its front end to the bracket structure for oscillation of the swing arm relative to the bracket struc...	12/19/1978
4117611	Digging teeth for an excavating bucket An improved excavating bucket having special excavating teeth thereon for use with a backhoe type digging machine. The teeth are affixed in spaced relation to a leading edge of the bucket, with there being a central and a lowermost tooth; opposed, interme...	10/03/1978
4047577	Discharge controlling plow sweep A plow sweep is provided including a shovel body defining a central front to rear extending axis and having a pair of first and second rearwardly divergent blade arms disposed on opposite sides of the central axis and joined at their forward ends along th...	09/13/1977
4033418	Tine mounting for rotary harrow including U-shaped recess A rotary harrow has soil working members, each of which includes a tine mounting wherein a horizontal support has a holder with a tine at one end, or both ends. Near the top of the fastening portion are one or two recess stops that are engaged by tighteni...	07/05/1977
4026367	Forward angle plow sweep with elevated trailing wing edge A plow sweep construction comprising a generally horizontal plate is provided. The plate includes front and rear marginal edges extending longitudinally of the plate and the center portion of the rear marginal edge includes an integral rearwardly and upwa...	05/31/1977

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Class 172/771 - With curved surface