Patent ID: 8602432

Claim:
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 pair of rear wheels; a front wheel having opposing sides and a front wheel axis; a head tube; a frame configured to rotatably support the rear wheels and configured to support the head tube at a distance from the rear wheels; a pair of pedals, each pedal configured for connection about the front wheel axis 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 extend from the head tube in a manner permitting the stem to rotate, the stem including a metal rod having a minimum diameter that is at least three times smaller than a width of the front wheel; a rider handle, configured to turn the fork about a stem axis extending transverse to the front wheel axis, the rider handle in the first mode, where the stem axis trails the front wheel axis, 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, where the stem axis leads the front wheel axis, being configured to be rotationally uncoupled from the stem, preventing forces on the rider handle from turning the fork and permitting the individual pushing the tricycle to turn the fork via a pushing force; and wherein the stem extends from the fork at an angle of between about 165 degrees and 179 degrees and wherein an offset distance between the stem axis and the front wheel axis is between 15 mm and 40 mm.