Vehicle having a swivel wheel

摘要

A tricycle 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. A rider handle, 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 and thereby turn the fork, and the rider handle in the second mode, being configured to be rotationally uncoupled from the stem, preventing forces on the rider handle from turning the fork. At least one rotation restrictor may be included for preventing the front wheel from turning to a position where the front wheel axis leads the fork axis, and for maintaining the front wheel axis in a position trailing the fork axis both when the tricycle is propelled by a tricycle rider in the first mode and when the tricycle is pushed from behind in the second mode.

主权项

1. A tricycle 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, the tricycle comprising:
a frame; a pair of rear wheels for rotatable connection to the frame; a front wheel having opposing sides and a front wheel axis; a pair of pedals, each pedal configured to rotate the front wheel; a fork having at least one blade configured to support the front wheel in a manner permitting the front wheel to rotate about the front wheel axis; a stem configured to be rotatably moveable with the fork and rotatably connectable to the frame; a rider handle, configured to turn the fork about a stem axis transverse to the front wheel axis, the rider handle, in the first mode, being configured to be rotationally coupled with the stem in a manner permitting a tricycle rider to exert forces on the rider handle and thereby turn the fork, and the rider handle in the second mode, being configured to be rotationally uncoupled from the stem, preventing forces on the rider handle from turning the fork; and wherein the front wheel, the pair of pedals, the fork, and the stem are configured to cooperate with each other in a manner such the front wheel axis trails the stem axis when the tricycle is pushed from behind in the second mode.