| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Cultivator | US281126D | US281126A | 1883-07-10 | ||
| 122 | Cultivator | US280263D | US280263A | 1883-06-26 | ||
| 123 | brennan | US277874D | US277874A | 1883-05-22 | ||
| 124 | Augustus g | US275354D | US275354A | 1883-04-10 | ||
| 125 | Cultivator-toqth | US252279D | US252279A | 1882-01-10 | ||
| 126 | benson | US251513D | US251513A | 1881-12-27 | ||
| 127 | Improvement in cultivators | US220985D | US220985A | 1879-10-28 | ||
| 128 | Improvement in drill-teeth | US220157D | US220157A | 1879-09-30 | ||
| 129 | Improvement in cultivator and seeding-machine | US198372D | US198372A | 1877-12-18 | ||
| 130 | Improvement in devices for bracing cultivator-teeth | US193735D | US193735A | 1877-07-31 | ||
| 131 | Improvement in cultivator-teeth | US192390D | US192390A | 1877-06-26 | ||
| 132 | Improvement in wheel-cultivators | US190972D | US190972A | 1877-05-22 | ||
| 133 | Improvement in gang-plows | US179094D | US179094A | 1876-06-27 | ||
| 134 | Improvement in friction-blocks for attaching cultivator and other teeth | US110103D | US110103A | 1870-12-13 | ||
| 135 | lowth and t | US82423D | US82423A | 1868-09-22 | ||
| 136 | lowth and t | US75436D | US75436A | 1868-03-10 | ||
| 137 | Improvement in cultivators | US56102D | US56102A | 1866-07-03 | ||
| 138 | Improvement in hanging cultivator-teeth | US47008D | US47008A | 1865-03-28 | ||
| 139 | ROW PLANTER LOCK ASSEMBLY | US15787208 | 2017-10-18 | US20180103573A1 | 2018-04-19 | JEFFREY ALAN SIVINSKI |
| A lock assembly is provided for a row planter unit to maintain the unit in a raised transport position and to relieve stress on the hydraulic system of the planter unit. The lock assembly includes a lock arm pivotally mounted to the bracket assembly of the row planter unit for selective receipt in a notch or detent on the mounting plate or mast of the bracket assembly so as to retain the row unit in the raised transport position. The lock arm can be disengaged from the bracket assembly notch or detent, such that the planter unit can be lowered to the field use position. | ||||||
| 140 | APPARATUSES, METHODS, AND SYSTEMS FOR PROVIDING DOWN FORCE FOR AN AGRICULTURAL IMPLEMENT | US15783708 | 2017-10-13 | US20180035597A1 | 2018-02-08 | COURTNEY N. ACHEN; MARVIN BACHMAN; RHETT SCHILDROTH; MERLAN ROLFFS; MICHAEL J. MYERS; JOHN KOLLMAN; JOHN P. MULHERIN |
| An agricultural planter includes systems, methods, and apparatus for providing down force pressure at row units of the planter. The row units may include an electric linear actuator connected to linkages of the row units to provide and maintain a down force pressure for the row unit. The linkage may also be removed and replaced with a strut or like mechanism to apply a direct down force pressure to components of the row unit. One or more sensors can be included to obtain information related to the ground to automatically adjust the amount of down force provided based upon a ground characteristic in order to maintain a substantially uniform furrow depth. | ||||||
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