| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Cultivator | US329888D | US329888A | 1885-11-10 | ||
| 242 | William l | US224402D | US224402A | 1880-02-10 | ||
| 243 | Improvement in wheat-cultivators | US209431D | US209431A | 1878-10-29 | ||
| 244 | Improvement in carriages for plows | US155040D | US155040A | 1874-09-15 | ||
| 245 | Improvement in cultivators | US129730D | US129730A | 1872-07-23 | ||
| 246 | Improvement in cultivators | US124329D | US124329A | 1872-03-05 | ||
| 247 | Improvement in cultivators | US91802D | US91802A | 1869-06-22 | ||
| 248 | Improvement in cultivators | US84588D | US84588A | 1868-12-01 | ||
| 249 | Improvement in harrows | US72623D | US72623A | 1867-12-24 | ||
| 250 | of eushville | US70328D | US70328A | 1867-10-29 | ||
| 251 | Improvement | US59022D | US59022A | 1866-10-23 | ||
| 252 | Improvement in cultivators | US56295D | US56295A | 1866-07-10 | ||
| 253 | Improvement in cultivators | US51494D | US51494A | 1865-12-12 | ||
| 254 | Improvement in corn-cultivators | US47016D | US47016A | 1865-03-28 | ||
| 255 | Improvement in cultivators | US46675D | US46675A | 1865-03-07 | ||
| 256 | Improvement in cultivators | US37532D | US37532A | 1863-01-27 | ||
| 257 | Improvement in cultivators | US36922D | US36922A | 1862-11-11 | ||
| 258 | Improvement in seed-drills and cultivators | US34918D | US34918A | 1862-04-08 | ||
| 259 | Steerable rear axle on a field cultivator | US14547634 | 2014-11-19 | US10085371B2 | 2018-10-02 | Matthew R. Sudbrink; Dean A. Knobloch |
| An agricultural tillage implement has a steerable rear axle which facilitates the implement more faithfully following a towing unit. The implement has a solid axle mounted to the main pull frame that allows for vertical movement of the implement to switch between field operation and a transport configuration. Attached to the solid axle are two steering knuckles that are tied together by an adjustable tie rod and two hydraulic steering cylinders. On each knuckle is a set of walking tandems to which the tires are mounted. The two cylinders are connected to an auxiliary port in a towing traction unit to enable the steering function without having to turn the unit steering wheel. The arrangement allows the steering knuckles to turn up to 25 degrees in either direction. | ||||||
| 260 | WORK VEHICLE, DISPLAY METHOD FOR WORK VEHICLE, AND DISPLAY SYSTEM | US15629755 | 2017-06-22 | US20180209793A1 | 2018-07-26 | Kazuo SAKAGUCHI; Izuru SHIMAMOTO; Kenji TAMATANI; Megumi SUZUKAWA; Atsushi SHINKAI |
| A work vehicle includes a memory, a sensor, circuitry, and a display. The memory is to store a target travel route in a work field. The sensor is to detect an actual travel track of the work vehicle to find a traveled portion of the target travel route, along which the work vehicle has traveled. The circuitry is configured to calculate an index value indicating a degree of a deviation of the actual travel track from the target travel route. The display is to display the traveled portion such that a display pattern to display the traveled portion is changed according to the index value. | ||||||
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