| 摘要 |
PURPOSE: A short bow having a simple NLOC(Negative Let-off Cam) is provided to ensure the smooth movement of a pair of limbs since an idler pulley is installed on the ends of the limbs. CONSTITUTION: A short bow having a simple NLOC(Negative Let-off Cam) comprises an unique riser, a pair of limbs(Li), an idler pulley(IP), a riser extender(RE), and a differential pulley. The limbs are connected to the unique riser. The idler pulley is installed on the ends of the limbs. The riser extender is extended to the unique riser. The differential pulley is installed on the riser extender and can rotate by over 270°. The differential pulley comprises a pair of differential pulley large leaves(DPLL) and a differential pulley small leaf(DPSL). The differential pulley small leaf rotates with the differential pulley large leaves.
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