Molded bow limb method

Details Molded bow limb method Molded bow limb method

1986-10-15

1988-04-05

Pinkham, Richard C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156172, 156245, 156267, 124 23R, 264257, 264137, B31C 0000, F41B 500, B27N 310

Patent

active

047356677

ABSTRACT:
A method of making a bow limb which comprises the steps of wrapping impregnated fiberglass strands around a frame to create a fiberglass and resin blank or package. The wet blank or package is then placed in the mold to be shaped and cured. The package has a calculated predetermined number of fiberglass strands, and also a calculated predetermined volume and weight of plastic resin. The mold, has two parts, a male and female. The volume of the mold may be simultaneously thinned and widened in forming the mold in such a manner that the cross-sectional area is constant at any given point. The thickness of the limb can be varied in accordance with the depth of penetration of the male member of the mold into the female. A tail of the excess fiberglass and resin extends from both ends of the mold, and after the formed unit or paddle is first cured and then removed from the mold; these are removed with a saw cut. The paddle is removed from the mold as soon as cured to the handling point, and then finish cured in an oven. When totally cured the paddle is severed into two limbs.

REFERENCES:
patent: 2813818 (1957-11-01), Pearson
patent: 2980158 (1961-04-01), Meyer
patent: 3057767 (1962-10-01), Kaplan
patent: 3657040 (1972-04-01), Shobert
patent: 3844268 (1974-10-01), Ikeya

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