| 摘要 |
A bow having a variable tension bowstring including one or more movable connecting points for the bowstring which points travel along the bow limbs from more central positions toward the limb tips as the bowstring is drawn, whereby the "drawing force," required to draw the bowstring to a fully extended position, gradually increases to a peak and then decreases and stabilizes so that the drawing force required to maintain the bowstring fully drawn is much less than the force at its peak. A pair of rollers are coupled to the bowstring and mounted for movement along the bow limbs. The rollers are connected by a member for keeping the distance between the rollers constant while the rollers ride along the limbs as a bowstring is drawn.
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