子分类：
| 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 | Traction-wheel. | US1902095429 | 1902-02-24 | US716606A | 1902-12-23 | WOOD JAMES E |
| 122 | Harvester. | US1901057669 | 1901-04-27 | US712509A | 1902-11-04 | DENNIS SAMUEL K |
| 123 | Cleat for traction-wheels. | US1902100475 | 1902-03-28 | US701180A | 1902-05-27 | EINFELDT EMIL |
| 124 | Traction-wheel. | US1900031296 | 1900-09-27 | US669143A | 1901-03-05 | MOONEY EMMETT |
| 125 | Metal rim for wheels. | US1899738885 | 1899-12-01 | US654049A | 1900-07-17 | BETTENDORF JOSEPH WILLIAM |
| 126 | Traction-wheel for agricultural machines. | US1898004694 | 1898-01-17 | US645429A | 1900-03-13 | RAND CHARLES A ANDERSON |
| 127 | Vehicle-wheel. | US1899707196 | 1899-02-28 | US629117A | 1899-07-18 | WINGATE CHARLES E |
| 128 | Abraham e | US555330D | US555330A | 1896-02-25 | ||
| 129 | Gustaf aryid anderson | US543075D | US543075A | 1895-07-23 | ||
| 130 | Field | US514061D | US514061A | 1894-02-06 | ||
| 131 | Traction-wheel | US509221D | US509221A | 1893-11-21 | ||
| 132 | Wheel | US401080D | US401080A | 1889-04-09 | ||
| 133 | Spuq-attachment for road-grader wheels | US356584D | US356584A | 1887-01-25 | ||
| 134 | Traction-wheel | US352483D | US352483A | 1886-11-09 | ||
| 135 | Oliveb w | US336649D | US336649A | 1886-02-23 | ||
| 136 | James andrew stout | US309417D | US309417A | 1884-12-16 | ||
| 137 | Almeein h | US247203D | US247203A | 1881-09-20 | ||
| 138 | Joseph allokas | US235722D | US235722A | 1880-12-21 | ||
| 139 | Improvement in wheels for vehicles | US112167D | US112167A | 1871-02-28 | ||
| 140 | Wheel assembly for an irrigation system | US15040657 | 2016-02-10 | US09463668B2 | 2016-10-11 | Michael S. Fredenburg; Thomas J. Korus |
| A wheel assembly for traversing a path along a ground surface having a layer of soil, the wheel assembly comprising a central support and an airless flexible covering mounted on the central support and having a plurality of rigid sections and a plurality of flexible sections. The outwardly protruding spokes urge the rigid sections into the layer of soil when the rigid sections contact the ground surface. The flexible sections include a set of traction lugs for gripping peaks of a corrugated pattern in the ground surface for improved traction. | ||||||
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