Patent ID: 8635994
Filing Date: 2014-01-28
Classification: F41B

Abstract:
1. An archery bow comprising: a central riser; first and second bow limbs attached to the riser; and a draw cable coupled to the first and second bow limbs, the bow limbs and draw cable being arranged so that pulling the draw cable to draw the bow causes the first and second bow limbs to bend toward one another, wherein: each of the first and second bow limbs comprises a multilayer composite structure having a compression layer, a tension layer, and an intermediate layer between the compression and tension layers, each of said layers comprising corresponding fibers embedded in a corresponding polymer matrix; the first and second bow limbs are arranged on the bow so that drawing the bow causes each limb to bend toward its corresponding compression layer; and the compression and tension layers each have a respective elastic modulus smaller than an elastic modulus of the intermediate layer; and wherein: the compression layer comprises multiple sublayers having differing elastic moduli; the intermediate layer comprises multiple sublayers having differing elastic moduli; or the tension layer comprises multiple sublayers having differing elastic moduli.