| 摘要 |
PCT No. PCT/GB93/02316 Sec. 371 Date Jul. 3, 1995 Sec. 102(e) Date Jul. 3, 1995 PCT Filed Nov. 10, 1993 PCT Pub. No. WO94/11228 PCT Pub. Date May 26, 1994A wheel head and rail assembly comprises a contra-rotatable wheel assembly (20) and associated rails (16, 18). Successive wheels (42, 44, 46) on the assembly contact, alternately, the rails (16, 18) on opposite sides thereof. The wheel head can provide a mounting for a carriage which carries, for example, a dropleg (22) with a spray nozzle for use on an agricultural crop sprayer.
|
