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
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.
대표청구항▼
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
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; andwherein 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. 2. The tricycle of claim 1, wherein the fork includes two blades configured to rotatably support the front wheel therebetween. 3. The tricycle of claim 1, wherein the handle is configured to be uncoupled from the stem via a manually activatable release mechanism. 4. The tricycle of claim 1, wherein the handle is configured to be coupled to the stem via a snap-in-place mechanism. 5. The tricycle of claim 1, further comprising a coupling mechanism associated with the stem, for permitting an operator to selectively couple and uncouple a rotational connection between the handle and the stem. 6. The tricycle of claim 5, wherein the coupling mechanism is configured such that in the second mode, the rider handle is freely rotatable independent of the stem, and in the first mode the rider handle is locked to the stem for rotation with the stem. 7. The tricycle of claim 1, wherein the front wheel has a diameter and a width, wherein the stem has a minimum diameter, and wherein the width of the front wheel is at least three times greater than the minimum diameter of the stem. 8. The tricycle of claim 1, wherein the stem includes a steel tube that has a minimum diameter that is at least four times smaller than a width of the front wheel. 9. The tricycle of claim 1, wherein the frame is configured to maintain a fixed, non-adjustable distance between the fork stem and the rear wheels. 10. The tricycle of claim 1, further including a parental handle extending from a rear portion of the tricycle and permitting the tricycle to be pushed and steered from behind.
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이 특허에 인용된 특허 (45)
Li Hsing,TWX, Auxiliary steering assembly for a tricycle.
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