| 摘要 |
PCT No. PCT/SE84/00158 Sec. 371 Date Dec. 19, 1984 Sec. 102(e) Date Dec. 19, 1984 PCT Filed Apr. 27, 1984 PCT Pub. No. WO84/04284 PCT Pub. Date Nov. 8, 1984.A tractor having a wheel (15) on the end of each of a pair of pivot arms (13) having a comon central pivot axis (12). A hydraulic cylinder (16) is attached to each arm (13) intermediate the pivot axis (12) and the wheel (15) and to a centrally located bracket (17) on the frame located directly above the pivot axis 12. |
