| 摘要 |
PCT No. PCT/GB96/00687 Sec. 371 Date Nov. 13, 1997 Sec. 102(e) Date Nov. 13, 1997 PCT Filed Mar. 22, 1996 PCT Pub. No. WO96/29228 PCT Pub. Date Sep. 26, 1996A steerable trolley, typically a shopping trolley, comprises two or more pivotable wheels and the steering mechanism comprising communication elements between a driving wheel and corresponding driven wheel, the communication elements being operable such that pivotal movement of the driving wheel about a substantially vertical axis acts to produce a pivotal movement of the corresponding driven wheel, wherein when the driving wheel is a rear wheel the driven wheel is a front wheel and vice versa. Advantageously only one and preferably, the outer of the driving wheels acts to produce the pivotal movement of its corresponding driven wheel during cornering of the trolley. An override mechanism for user engagement or disengagement when the trolley is stacked is also provided. An arcuate handle bar and side bars may also be provided. Ease of maneuverability is assisted by differential offsets in the drive and driven wheels. |
