A tricycle convertible to a bicycle. The tricycle has a first wheel rotatably mounted on one end portion of a frame, and a pair of laterally spaced wheels rotatably mounted on a second end portion of the frame, wherein the laterally spaced wheels are movable, while the tricycle is in motion, between
A tricycle convertible to a bicycle. The tricycle has a first wheel rotatably mounted on one end portion of a frame, and a pair of laterally spaced wheels rotatably mounted on a second end portion of the frame, wherein the laterally spaced wheels are movable, while the tricycle is in motion, between a first position with relatively wide ground-level spacing and a second position with minimal ground-level spacing. A wheel hub capable of providing adjustable wheel camber has left and right pivotally mounted axles extending laterally from the hub body, the axles each adapted to support a wheel and mounted so as to pivot vertically, and a dual camber control mechanism coupled to the axles and adapted to provide coordinated camber adjustment in the same direction for wheels on both axles. The hub has sufficient range of motion to allow the wheels to change from negative camber to positive camber, and is useful in a method of stabilizing a bicycle or the like to increase safety during rider training. The method involves a tricycle mode of operation in which the laterally spaced wheels have negative camber, and a bicycle mode of operation in which the laterally spaced wheels have positive camber, with a change from tricycle mode to bicycle mode while in motion, whereby a rider in training may start moving with stable three-point ground contact and, when in motion and balanced, effectively start riding a bicycle.
대표청구항▼
We claim: 1. A wheeled vehicle with an adjustable wheel camber, comprising: a frame; at least one wheel rotatably mounted on one end portion of said frame; and a pair of laterally spaced wheels rotatably mounted on a second end portion of said frame, wherein said laterally spaced wheels are pivotal
We claim: 1. A wheeled vehicle with an adjustable wheel camber, comprising: a frame; at least one wheel rotatably mounted on one end portion of said frame; and a pair of laterally spaced wheels rotatably mounted on a second end portion of said frame, wherein said laterally spaced wheels are pivotally mounted such that the camber of each is adjustable in the same direction as the other; wherein there is a pair of laterally spaced wheels rotatably mounted on each end portion of said frame wherein the camber is adjustable with said vehicle in motion, and wherein the camber of said rear wheels is adjustable between positive camber and negative camber; and, wherein said rear wheels are sufficiently closely spaced that the bottoms of said rear wheels nearly touch each other in a state of maximum positive camber. 2. A hub providing adjustable wheel camber on a wheeled vehicle, comprising: a hub body; left and right axles extending laterally from said hub body, said axles each adapted to support a wheel, at least one of said axles mounted so as to pivot vertically, wherein said left and right axles are both pivotally mounted to said hub body; a camber control mechanism coupled to said at least one axle and adapted to adjust the angle thereof with respect to the other axle; wherein said camber control mechanism is a dual control mechanism coupled to both of said axles and adapted to provide coordinated camber adjustment in the same direction for wheels on both axles and said camber control mechanism includes left and right collars around said left and right axles, respectively and further comprising a center axle in said hub body, and left and right U-joints connecting said center axle to said left and right axles, respectively. 3. The hub of claim 2, wherein said camber control mechanism is capable of adjusting camber with the vehicle in motion. 4. The hub of claim 3, further comprising a drive sprocket mounted on said center axle for transmitting power thereto from a crankset via a flexible drive member. 5. The hub of claim 4, wherein the wheel camber is adjustable between positive camber and negative camber. 6. The hub of claim 5, wherein said left and right axles are sized with respect to the wheels to be supported thereon so as to pivot vertically between a first position corresponding to maximum negative camber in which the tops of the wheels nearly touch each other during use, and a second position corresponding to maximum positive camber in which the bottoms of the wheels nearly touch each other during use. 7. The hub of claim 6, wherein said hub body is adapted to fit the rear end of a bicycle frame. 8. The hub of claim 7, wherein said camber control mechanism includes means for biasing said left and right axles downwardly.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (27)
Vidal Carlos C. (Martinez de la Rosa 12 18002 Granada ESX), Articulated balancer with an oscillating axle and having locking possibilities.
Lofgren Michael S. (20589 SW. Elk Horn Ct. Tualatin OR 97062) Stewart Brian C. (20589 SW. Elk Horn Ct. Tualatin OR 97062), Steering method and mechanism for three-wheel vehicle.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.