Effort-saving bicycle
OwnerChin An Changinventor
Life of this patent
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Abstract
An effort-saving bicycle is provided. The bicycle includes at least one wheel. The wheel is centrality provided with a shaft gear at its rim. The shaft gear is connected to a chain that is further connected to a transmission gear. The transmission gear has its shaft connected to one end of a first crank whose opposite end acts as a first crank joint connected to a link's one end at its inner side. The link has its opposite end provided with a pedal. The first crank joint of the link is connected to one end of a second crank through a second crank joint whose opposite end is connected to a second crank-frame joint that is connected to a frame. The specially located transmission gear working with the extended links that connects cranks and pedals allows effort-saving bicycling based on the lever rule.
Claims4
An effort-saving bicycle, the bicycle comprising at least a wheel, the wheel being centrality provided with a shaft gear at its rim, the shaft gear being connected to a chain, the chain being connected to a transmission gear, the transmission gear having a shaft connected to one end of a first crank, the first crank having an opposite end acting as a first crank joint, the first crank joint being connected to one end of a link at the link's inner side, the link having an opposite end provided with a pedal;
- the first crank joint of the link having its outer side connected to one end of a second crank through a second crank joint, the second crank having an opposite end connected to a second crank-frame joint, and the second crank-frame joint being connected to a frame.
Dependencies are inferred from the claim text.