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| Number | Title | Issue Date |
| 7373890 | Vacuum control for seed planter A seed planting unit provides a manifold connecting a vacuum to multiple metering disks. The manifold includes valves to sequentially connect the manifold branches to the seed unit so as to moderate the peak air flow necessary to be handled by the vacuum source redu... | 05/20/2008 |
| 7237496 | Modular planter hydraulic system and method An apparatus and manufacturing method in which from one to three hydraulic pumps are provided and installed near a front end of the implement, so that a first pump can be easily coupled to the power take-off shaft of the tractor by an operator. In an exemplary embod... | 07/03/2007 |
| 7171913 | Self-calibrating meter with in-meter diffuser A self-calibrating metering system for dispensing chemical granules. The system incorporates a flow sensor configured to sense a greater flow rate at the inlet aperture than at the outlet aperture. Further included is an adjustment mechanism configured to adjust the... | 02/06/2007 |
| 6863006 | Drive mechanism for agricultural planters A drive mechanism for an agricultural planter includes a first electronic controller, a second electronic controller, a hydraulic valve manifold, hydraulic drives for the seed and fertilizer hoppers, and a feedback sensor from the hydraulic drives to the second elec... | 03/08/2005 |
| 6145455 | Agricultural material metering system An agricultural material metering system includes a metering member, a hydraulically driven actuator, a pump, a rotatable ground driven member, a variable drive control and an actuator coupled to the variable drive control. The metering member is configur... | 11/14/2000 |
| 5878680 | Seeder with linear actuation and seed leveling shuffler with dust removal capability A linear actuated needle seeder comprising a frame, a seed dispenser assembly further including a shuffler assembly and a capture assembly. The seed shuffler assembly further comprises: an energizeable vibrator having a top portion and a bottom portion, a... | 03/09/1999 |
| 5598794 | High accuracy automatically controlled variable linear seed spacing planting apparatus A control system for a mobile planting apparatus which permits discrete plant spacing to be determined and maintained independent of any wheel rotation on the planting apparatus or towing apparatus is disclosed, having: (1) a ground speed sensor wherein t... | 02/04/1997 |
| 5358055 | Partial width seeding attachment A partial width seeding attachment includes electronically controlled solenoids which activate hydraulic flow control valves connected to the hydraulic cylinders on respective implement sections. Switches in the tractor cab control the rockshaft of one or... | 10/25/1994 |
| 5078066 | Seeder clutch for tramlines A clutching mechanism for a seed meter incorporates a spring wrapped clutch for selectively disengaging a seed meter on a seed drill in order to tramline fields for agricultural purposes. A common shaft rotates and dispenses seeds from a series of seed me... | 01/07/1992 |
| 5003894 | Seeder clutch for tramlines A clutching mechanism for a seed meter incorporates a spring wrapped clutch for selectively disengaging a seed meter on a seed drill in order to tramline fields for agricultural purposes. A common shaft rotates and dispenses seeds from a series of seed me... | 04/02/1991 |
| 4742785 | Planting machine with ground-conditioning drive A planting machine has a ground-conditioning wheel ahead of the planting mechanism. This wheel normally carries a portion of the weight of the machine. The traction thus established is utilized to generate power for the planting mechanism as the machine i... | 05/10/1988 |
| 4550860 | Planter population reduction drive unit A planter population reduction drive system includes a third shaft adapted to be added onto a planter implement transmission unit having existing first and second shafts. The individual planter units are driven by the second shaft which is connected by a ... | 11/05/1985 |
| 4122974 | Variable speed planter seed drive An electrically adjusted and mechanically driven variable speed pulley transmission provides immediate and accurate changes to the seed dispensing rate of a planter. The variable speed pulley transmission is driven by a ground-engaging wheel and adjusted ... | 10/31/1978 |
