IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0798090
(2001-03-05)
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발명자
/ 주소 |
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인용정보 |
피인용 횟수 :
11 인용 특허 :
5 |
초록
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A Tread Wheel Frame System drives a human-powered cycle by a tread wheel driving a tread of a drive wheel of a cycle rather than driving a drive wheel hub, as conventional cycles do. Most of the driving mechanism, including the tread wheel, a speed ratio mechanism, shifting device, and a power unit
A Tread Wheel Frame System drives a human-powered cycle by a tread wheel driving a tread of a drive wheel of a cycle rather than driving a drive wheel hub, as conventional cycles do. Most of the driving mechanism, including the tread wheel, a speed ratio mechanism, shifting device, and a power unit device, are safely located above the level of a cycle's axles where they are less likely to encounter accidental impact. The tread wheel with the power unit device also does the braking, which eliminates the need for caliper brakes or hub brakes. Accordingly, a drive wheel is lighter, without the need for a heavy hub, or a heavy rim to withstand the wear and heat of friction of caliper brakes. The tread wheel frame is uniquely designed and engineered to be light, yet strong where needed. The best mode includes many features: an energy recapture and storage system that saves energy that would be lost in braking, for assisting in going up hills, thigh levers, extendable pedal cranks for providing more pedal leverage, a frame extension that has no cross bar, and foot room to allow easy, low-level, mounting and dismounting, retractable stand, lean-on device, adjustable steering, and low-mass suspension.
대표청구항
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1. A tread wheel frame system for a human-powered cycle comprising:an adjustable axle; a tread wheel rotatably mounted on said adjustable axle; controlling means, including fittings connected to the ends of said adjustable axle, to control said tread wheel; rear frame members having upper portions c
1. A tread wheel frame system for a human-powered cycle comprising:an adjustable axle; a tread wheel rotatably mounted on said adjustable axle; controlling means, including fittings connected to the ends of said adjustable axle, to control said tread wheel; rear frame members having upper portions connected respectively to said controlling means; substantially vertical frame members having upper portions connected respectively to upper ends of said rear frame members; a saddle tube connected to the upper ends of said substantially vertical frame members; lower frame members having the rear portions connected respectively to the lower ends of said rear frame members, and having the middle portions connected respectively to the lower ends of said substantially vertical frame members; a drive wheel disposed substantially below, and being controlled by, said tread wheel; a drive wheel axle connected to the rear portions of said lower frame members; a hub assembly connected to the middle portions of said lower frame members; driving means including pedals, crank arms, crank axle, and drive pulley rotatably connected to said hub assembly, to utilize the power of a pedaling motion; power transmission means, including a drive belt connected to said drive pulley, to convey power; a speed ratio mechanism, including a pulley cluster, rotatably mounted on said adjustable axle, driven by said power transmission means; shifting means, including a derailleur mounted on the middle portion of said rear frame member, to operate said speed ratio mechanism; transmitting means, including a ratchet integral with said speed ratio mechanism, to convey power to said tread wheel; a power unit device connected to the middle portion of said saddle tube, in combination with said tread wheel for driving, including braking, said drive wheel; whereby power transmitted to said drive wheel controls the motion of said cycle.
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