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US 4,230,752 AGranted
Cigarette burn proof artificial grass
AssigneeBrunswick Corporation
InventorJoseph C. Benedyk
Life of this patent
Estimating the term…
Abstract
An artificial grass product with pile fibers having a modulus of elasticity of from 25,000 p.s.i. to 100,000 p.s.i. and a moment of inertia of from 1.06.times.10.sup.-10 in..sup.4 to 8.33.times.10.sup.-9 in.sup.4. For fibers of rectangular cross-section the fiber dimensions range from 0.004 in. to 0.010 in. in thickness and 0.020 in. to 0.100 in. in width. The fibers or product made therefrom may be exposed to ionizing radiation to promote cross-linking and increase resistance to cigarette burning.
Claims26
A cigarette burn proof artificial grass product, comprising:
- a pile fabric with twisted yarn comprised of a plurality of fibers made of an ethylene-vinyl acetate copolymer and having an elastic modulus of from 25,000 p.s.i. to 100,000 p.s.i. and a moment of inertia of from 1.06.times.10.sup.-10 in..sup.4 to 8.33.times.10.sup.-9 in..sup.4, the fibers extending from and substantially perpendicular to a backing to which the fibers are secured, wherein the yarn is twisted at the part of emergence from the backing, and wherein the copolymer is cross-linked by exposure to an effective amount of ionizing radiation to achieve a gel content of from about 25 to 75 percent.
A cigarette burn proof artificial grass product, comprising:
- a pile fabric with twisted yarn comprised of a single fiber made of an ethylene-vinyl acetate copolymer and having an elastic modulus of from 25,000 p.s.i. to 100,000 p.s.i. and a moment of inertia of from 1.06.times.10.sup.-10 in..sup.4 to 8.33.times.10.sup.-9 in..sup.4, the yarn tufted into a backing to form successive rows of loops of the fiber which are cut to provide a cut-pile face, and wherein the copolymer is cross-linked by exposure to an effective amount of ionizing radiation to achieve a gel content of from about 25 to 75 percent.
Dependencies are inferred from the claim text.