The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 1988
Filed:
Oct. 15, 1986
Richard Johnston, Tucson, AZ (US);
Precision Shooting Equipment Company, Tucson, AZ (US);
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.