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. In both such first and second modes, the frame of the tricycle is configured to rotatably support the rear wheels and configured
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. In both such first and second modes, the frame of the tricycle is configured to rotatably support the rear wheels and configured to support the head tube at a distance from the rear wheels such that a distance between the head tube and rear wheels need not necessarily be changed even when the front wheel axis location is changed from one mode to another.
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 fork having at least one blade configured to support a front wheel in a manner permitting the front wheel
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 fork having at least one blade configured to support a 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;a rider handle, configured to turn the fork about a stem 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, 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; andwherein the offset distance, between the stem axis and the front wheel axis, is between 15 mm and 40 mm. 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 rider handle is configured to be uncoupled from the stem via a manually activatable release mechanism. 4. The tricycle of claim 3, wherein the rider 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 operably couple and non-operably couple a rotational connection between the rider 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 non-operably coupled to the stem such that it 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, further comprising a plurality of pedals, wherein the pedals are configured for selective rotational engagement and rotational disengagement from the wheel, thereby allowing rotation of the front wheel. 8. 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. 9. 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 head tube;a frame configured to support a seat, to rotatably support the rear wheels and to support the head tube at a fixed distance from the rear wheels;a fork having at least one blade configured to support a front wheel in a manner permitting the front wheel to rotate about the front wheel axis;a stem, which extends from the fork; anda rider handle, configured to turn the fork about a stem axis transverse to the front wheel axis, the rider handle, in the first mode, where the rider is permitted to directly rotate the front wheel, 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 pushing force,wherein the stem extends from the fork at an angle of between about 165 degrees and 179 degrees. 10. The tricycle of claim 9, wherein an offset distance between the stem axis and the front wheel axis is between 15 mm and 40 mm. 11. The tricycle of claim 9, wherein the stem has a minimum diameter that is at least three times smaller than the width of the front wheel. 12. The tricycle of claim 9, wherein the stem has a minimum diameter that is at least four times smaller than the width of the front wheel. 13. The tricycle of claim 9, wherein the handle is configured to be uncoupled from the stem via a manually activatable release mechanism. 14. The tricycle of claim 13, wherein the handle is configured to be coupled to the stem via a snap-in-place mechanism. 15. 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;at least one pedal deactivatably attached to the tricycle;a head tube;a frame configured to rotatably support the rear wheels and to support the head tube at a fixed distance from the rear wheels;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; anda 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 rider is permitted to directly rotate the front wheel, 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 pushing force,wherein the handle is configured to be rotationally coupled to the stem via a pressure transferring element. 16. The tricycle of claim 9, further including a pair of pedals, each pedal configured for connection about the front wheel axis to rotate the front wheel. 17. The tricycle of claim 16, wherein the pedals are configured for selective rotational engagement and rotational disengagement from the front wheel. 18. The tricycle of claim 9, further including a footrest connected to the frame. 19. 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 seat;a frame configured to support the seat, to rotatably support the rear wheels and to support the head tube at a distance from the rear wheels;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 parental handle extending from a rear portion of the tricycle and permitting the tricycle to be pushed and steered from behind, wherein the parental handle is telescopically adjustable; anda rider handle, configured to turn the fork about a stem axis transverse to the front wheel axis, the rider handle, in the first mode, where the rider is permitted to directly rotate the front wheel, 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 permitting the individual pushing the tricycle to turn the fork via pushing force. 20. 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 fork having at least one blade configured to support a front wheel in a manner permitting the front wheel to rotate about the front wheel axis;a stem which extends from the fork; anda rider handle, configured to turn the fork about a stem axis, the rider handle in the first mode, being configured to be rotationally coupled with the fork 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 fork, 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,wherein an offset distance, between the stem axis and the front wheel axis, is less than 50 mm. 21. 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 head tube;a fork having at least one blade configured to support a front wheel in a manner permitting the front wheel to rotate about the front wheel axis;a stem, which extends from the fork; anda rider handle, configured to turn the fork about a stem axis transverse to the front wheel axis, the rider handle, in the first mode, where the rider is permitted to directly rotate the front wheel, 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 pushing force,wherein the stem extends from the fork at an angle of between about 165 degrees and 179 degrees. 22. The tricycle of claim 15, wherein the at least one pedal is removable, disengagable, or foldable relative to the tricycle.
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이 특허에 인용된 특허 (48)
Li Hsing,TWX, Auxiliary steering assembly for a tricycle.
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