| 摘要 |
<p>A tricycle (810) may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle (810). A rider handle (200), in the first mode, may be configured to be rotationally coupled with the stem in a manner permitting a tricycle rider to exert forces on the rider handle (200) and thereby turn the fork, and the rider handle (200) in the second mode, being configured to be rotationally uncoupled from the stem, preventing forces on the rider handle (200) from turning the fork. At least one rotation restrictor may be included for maintaining the front wheel axis in a position trailing the fork axis both when the tricycle (810) is propelled by a tricycle rider in the first mode and when the tricycle (810) is pushed from behind in the second mode.</p> |
