Archery bow limb constructed of syntactic foam
AssigneeHoyt/Easton Archery Co.
InventorsGary W. Filice, Earl H. Hoyt, Jr.
Life of this patent
Estimating the term…
Abstract
A laminated archery bow limb has a relatively light weight core consisting of a plurality of hollow micro spheres in a matrix of hard synthetic resin and formed as a tapered strip of "syntactic foam" material with relatively thin facing and backing strips of high tensile and compressive strengths and a high rate of recovery glued to opposite sides thereof. In a second form of bow limb construction the core material further includes, in addition to the hollow micro spheres, reinforcing fibres to increase the physical strength thereof.
Claims18
An archery bow, comprising a handle section;
- a pair of bow limbs attached to and extending outwardly from the handle section to provide a pair of spaced limb tips, each limb having a side adapted to face the archer and a side adapted to face away from the archer when the bow is in use, and each limb including a core of a syntactic foam material, a strip of tension material intimately secured along its length to the core along the side of the limb adapted to face away from the archer, and a strip of compression material intimately secured along its length to the core along the side of the limb adapted to face the archer;
- a bowstring;
- and means coupling the bowstring to the limb tips.
A pair of composite bow limbs in an archery bow, each limb fixed at one end to an intermediate handle section and each comprising a core strip of syntactic foam, said syntactic foam comprising a plurality of hollow spheres in a matrix of hard synthetic resin;
- tension strips intimately secured along their lengths to corresponding sides, respectively, of one set of sides of said core strips, compression strips intimately secured along their lengths to opposite corresponding sides, respectively, of said core strips, said tension and compression strips each comprising a matrix of hard synthetic resin and strengthening fibers embedded in said resin.
Dependencies are inferred from the claim text.