The Gates Corporation

Other

General Sports Venue LLC

Generalsports Turf, LLC

Imperial College London

John Graeme Knox

Lambert Pasch

Joseph R Duke, Jr

Kelechi C Anyaogu

Ralph Michael Duke

Alexander Bismarck

Donald James Burlett

Mark William Scharr

Su Bai

Tulin K Markes

An aqueous adhesive composition for treating a reinforcing fiber for bonding to a thermosetting polymer matrix and products made therefrom such as power transmission belts. The adhesive composition includes: water as the solvent or dispersing medium; a polyelectrolyte co-curable with the polymer matrix; a primer material compatible with the fiber and co-curable with the polyelectrolyte; and optionally a rubber curative compatible with the polyelectrolyte and the polymer matrix. A fiber-reinforced, composite polymer system may thus include a thermosetting polymer matrix, a reinforcing fiber embedded therein, and an adhesive composition coating the fiber; the adhesive composition including a polyelectrolyte co-curable with the polymer matrix and a primer material compatible with the fiber and co-curable with the polyelectrolyte. The adhesive composition may include a curative compatible with the polyelectrolyte. In one preferred embodiment, the invention is an aqueous adhesive composition including water, an epoxy resin, a maleated polybutadiene derivative, and a curative.

Adhesive treatment for fiber for polymer reinforcement and reinforced products

A belt with a tensile cord embedded in an elastomeric body, having a polyurea-urethane adhesive composition impregnating the cord and coating the fibers. The composition is reaction product of a polyurethane prepolymer and a diamine curative. The prepolymer is a reaction product of a compact, symmetric diisocyanate and a polyester, polyether, or polycarbonate polyol. The belt body may be of cast polyurethane, vulcanized rubber, or thermoplastic elastomer. The cord may have an adhesive overcoat.

Polyurea-urethane cord treatment for power transmission belt and belt

A treated carbon fiber tensile cord for use in power transmission belts, hose, tires or other reinforced rubber products and the resulting product, which includes carbon fibers which are coated with a polymeric layer deposited and polymerized at atmospheric pressure in a plasma assisted chemical vapor deposition process. A suitable polymeric layer is compatible with the intended matrix which the cord will reinforce. For a rubber belt, the coating is compatible with the rubber composition of the belt body or an adhesion gum or adhesive such as RFL which surrounds the cord. For RFL/rubber systems and cast polyurethane elastomers, a suitable polymer is the APP reaction product of a vinyl carboxylic acid or an ester or amide thereof. Suitable carboxylic acids include acrylic acid and methacrylic acid. Various esters and amides of vinyl carboxylic acid are also suitable, such as 2-hydroxyethyl methacrylate, N-isobutoxymethyl acrylamide, and N-hydroxyethyl acrylamide.

Carbon cord for reinforced rubber products and the products

A belt with a tensile cord embedded in an elastomeric body, having a polyurea-urethane adhesive composition impregnating the cord and coating the fibers. The composition is reaction product of a polyurethane prepolymer and a diamine curative or water. The prepolymer is a reaction product of a compact, symmetric diisocyanate and a polyester, polyether, or polycarbonate polyol. The belt body may be of cast polyurethane, vulcanized rubber, or thermoplastic elastomer. The cord may have an adhesive overcoat.

A snap-in tire valve for mounting in a valve hole in a wheel rim, having a valve body and a resilient member having an overall shape including a groove and a rib adapted to snap into and be retained in the hole. The resilient member may include a rubber that is the reaction product of ethylene-propylene copolymer elastomer, a peroxide curative, zinc diacrylate or zinc dimethacrylate, and a high-density inert filler, such as barium sulfate. The resilient member may include a first and second rubber members of different compositions from each other and defining two layers under the groove. The thickness of the layer of the first rubber member is preferably greater than the thickness of the layer of the second rubber member.

Rubber composition and design for snap-in tire valve

A system and method of making an open-ended, reinforced, layered belt having a profile layer, a top layer material, and tensile cords fully encapsulated there between. The method includes engaging portion of the profile layer on a rotatable cylindrical mandrel with an engaging roller, disengaging with a take-off roller, and applying and fusing the cords to the profile layer at a desired cord spacing there between. The cord may be fused by melting the profile layer surface with a heated plow and/or with heated cord. The cord is then covered with the top layer material in a lamination step involving heating to melt at least a portion of the top layer and pressing it to fuse it to the reinforced profile layer. Lamination may be done downstream or directly on the mandrel.

Method of making open-ended thermoplastic belting

A vulcanized rubber CVT belt in the form of an endless V-belt having a belt body with angled sides, a tensile cord layer of helically spiraled tensile cord embedded in the belt body, an overcord rubber layer, and an undercord rubber layer, wherein the tensile cord is a twisted, single-tow bundle of continuous-filament, carbon fiber impregnated with an adhesive treatment and/or overcoated with adhesive compatible with the rubber of the tensile cord layer. The tow may be 18K. The carbon fiber may have a filament diameter of from about 6.0 to about 6.4-micron, a tensile modulus of from about 200 to about 300 GPa, an elongation at break of from about 1.9% to about 2.3%.

CVT belt

A system, method and apparatus for making endless belts having a profile layer, a fully embedded, helically wound, cord layer, and a top layer. The apparatus has a rotatable mandrel with a profile complementary to the belt profile, two or one engagement rolls adjacent the mandrel to maintain forced, wrapped engagement of the profile layer on a portion thereof; a cord applicator which may include a heated blade that plows a groove in the profile layer into which the cord is laid and fused thereto. A laminator applies the top layer onto the reinforced carcass. A system of buffer rolls handles the loose portion of the profile layer or carcass guiding it.

Apparatus and method for making endless reinforced belts

A method for testing internal differences in reinforced flexible composites including placing a flexible composite on a rigid support structure, tapping the composite with a tapper of predetermined mass, determining a value representative of the impact duration of the tap and/or computing a value representative of the local stiffness of the composite. The composite may be a power transmission belt or portion thereof with tensile cord reinforcement. The method is useful for comparing the degree of penetration of elastomer into the tensile cord, for example in a cast polyurethane toothed belt.

Nondestructive test for flexible composites

A toothed belt includes a body, at least one tooth formed of the body, a jacket disposed along a peripheral surface of the at least one tooth and having a compressed thickness in the range from 0.5 mm to about 0.8 mm, and at least one cord embedded in the body and having a diameter. The at least one cord and said jacket have a ratio of said cord diameter to said jacket thickness of less than 1.8, and said cord diameter and said jacket thickness describe an optical belt PLD of about 1.2 mm or less.

Toothed power transmission belt

A durable and wear resistant synthetic sports field having at least one strip having a plurality of fibrillated polypropylene strands tufted within a multilayer backing material. The strands are tufted in a wide variety of pile heights, patterns, gauges, and stitch patterns depending upon end use. The multiplayer backing material has a top mesh polypropylene layer at least three layers of a backing material coated with a secondary coating used to contain the ends of the plurality of strands. The strips are placed onto a fine aggregate layer placed over a coarse aggregate layer and a geotextile fabric. The geotextile fabric is placed onto a compacted and leveled subgrade. A ground rubber infill, with or without sand particles and diatomaceous earth, is introduced onto the strips. In alternative arrangements, a series of perforated drains and drain tiles may be introduced to the coarse aggregate layer to promote drainage.

Growing community of inventors

Oxford, MI, United States of America

John Graeme Knox