Abstract: A method of making a fiber-loaded polymeric sheet and power transmission belts utilizing same are provided wherein the sheet comprises a substantially solid polymeric matrix having fibers embedded therein and wherein the fibers comprise between 2 phr and 70 phr of the sheet and at least 70% of the fibers are disposed in substantially parallel relation.

Abstract: A chain belt construction, a load block therefor and methods of making the same are provided, the chain belt construction comprising a plurality of interleaved sets of links, each set of links having a transversely disposed pivot pin arrangement joining its links to the links of the sets of links adjacent thereto, and a plurality of load blocks respectively interconnected to certain of the sets of links to be carried thereby, each load block having a tubular opening arrangement therein telescopically receiving the pivot pin arrangement of its respective set of links therein to interconnect that load block to its respective set of links.

Abstract: The present invention relates to a polymeric composition which may be processed with increased scorch safety while retaining good physical properties. The composition of the invention comprises the combination of a specific retarder (vulcanization inhibitor) and at least one of two specific accelerators, and such composition prevents premature vulcanization of the chloroprene while it is being mixed and processed, yet provides excellent cure characteristics at the proper time, producing polymeric products with excellent dynamic properties.

Abstract: A method of making a fiber-loaded polymeric sheet and power transmission belts utilizing same are provided wherein the sheet comprises a substantially solid polymeric matrix having fibers embedded therein and wherein the fibers comprise between 40% and 70% by weight of the sheet and at least 70% of the fibers are disposed in substantially parallel relation.

Abstract: A method of making a fiber-loaded polymeric sheet and power transmission belts utilizing same are provided wherein the sheet comprises a substantially solid polymeric matrix having fibers embedded therein and wherein the fibers comprise between 40% and 70% by weight of the sheet and at least 70% of the fibers are disposed in substantially parallel relation.

Abstract: An endless power transmission V-belt construction and method of making the same are provided, the belt construction being formed mainly of polymeric material and having rounded top and bottom teeth respectively extending along the length of the top and bottom surfaces of the belt construction, the belt construction comprising a tension section having the top surface, a compression section having the bottom surface, and a load-carrying section disposed intermediate the tension section and the compression section. The bottom to top tooth pitch ratio of the belt construction, the bottom to top tooth depth ratio thereof, and the belt thickness to flex thickness ratio thereof may be varied in specific instances to optimize performance in specific uses.

Abstract: An endless power transmission V-belt construction and method of making the same are provided, the belt construction being formed mainly of polymeric material and having rounded top and bottom teeth respectively extending along the length of the top and bottom surfaces of the belt construction, the belt construction comprising a tension section having the top surface, a compression section having the bottom surface, and a load-carrying section disposed intermediate the tension section and the compression section. The quotient of the top width to belt thickness is approximately 2.0, the quotient of the bottom to top tooth pitch is approximately 1.40, the quotient of the bottom to top tooth depth is approximately 1.77 and the quotient of the belt thickness to flex thickness is approximately 3.98.

Abstract: A strip of material adapted for use in a power transmission belt construction, method of making such strip, and belt construction and method of making same employing the strip are provided wherein such strip comprises an uncured polymeric matrix material having opposed surfaces and a plurality of elongate reinforcing fibers disposed substantially uniformly throughout the matrix material in a random manner and in parallel relation and a plurality of parallel spaced apart bleeder yarns are adhered against at least one of the surfaces with the strip being adapted to be laminated against associated layer means comprising the belt construction on at least one common interface with the bleeder yarns along the interface and the bleeder yarns are adapted to serve as fluid passages for any fluid present at the interface during curing of the strip and its associated layer means.

Abstract: A method of making a fiber-loaded polymeric sheet and power transmission belts utilizing same are provided wherein the sheet comprises a substantially solid polymeric matrix having fibers embedded therein and wherein the fibers comprise between 40% and 70% of the sheet and at least 70% of the fibers are disposed in substantially parallel relation.

Abstract: A strip of material adapted for use in a power transmission belt construction, method of making such strip, and belt construction and method of making same employing the strip are provided wherein such strip comprises an uncured polymeric matrix material having opposed surfaces and a plurality of elongate reinforcing fibers disposed substantially uniformly throughout the matrix material in a random manner and in parallel relation and a plurality of parallel spaced apart bleeder yarns are adhered against at least one of the surfaces with the strip being adapted to be laminated against associated layer means comprising the belt construction on at least one common interface with the bleeder yarns along the interface and the bleeder yarns are adapted to serve as fluid passages for any fluid present at the interface during curing of the strip and its associated layer means.

Abstract: An endless power transmission V-belt construction and method of making the same are provided, the belt construction being formed mainly of polymeric material and having rounded top and bottom teeth respectively extending along the length of the top and bottom surfaces of the belt construction, the belt construction comprising a tension section having the top surface, a compression section having the bottom surface, and a load-carrying section disposed intermediate the tension section and the compression section. The quotient of the bottom to top tooth pitch ratio of the belt construction is approximately 1.40 and the quotient of the bottom to top tooth depth ratio thereof is approximately 1.77 while the quotient of the belt thickness to flex thickness ratio thereof is approximately 3.98.

Abstract: A method and apparatus for making toothed belts and toothed belt made using such method and apparatus are provided wherein the belt is made primarily of polymeric material and is comprised of at least parts of a plurality of successive turns of a single helically wound toothed strip wherein the turns are bonded together in adjoining side-by-side relation and the toothed belt has improved teeth comprised of teeth initially provided in the single toothed strip by compressed, displaced, and reshaped portions of hot strip means of substantially self-supporting quadrilateral cross-sectional configuration employed to define such single strip.

Abstract: An emergency drive belt and a method of forming the same are provided, wherein such method comprises the steps of winding a ribbon of a cured elastomeric material having a bonding medium on at least one side thereof around at least two spaced apart pulleys and continuing such winding until the belt is built up to a desired thickness.

Abstract: A continuous, spliceless bias fabric in which the angular displacement between the warp and filling yarns is in the approximate range of 90 to 150 degrees is produced by the steps of cutting a tubular, square-woven fabric at a bias angle of 40-50 degrees to provide a continuous length of fabric, optionally drying the fabric, calendering at least one layer of an elastomeric compound to at least one side of the continuous length of fabric, heating the thus-calendered fabric, stretching the fabric in its width direction to provide a warp to filling angle of about 90-150 degrees, and cooling the stretched fabric.

Abstract: Cord or fabric is reduced to short fiber lengths by applying a point contact compressive force thereto.

Abstract: The dispersibility of cotton filter fly in an elastomeric composition is greatly improved by applying point contact compressive force to the filter fly prior to mixing it into the elastomer.

Abstract: An elastomeric endless power transmission belt is provided and has a tension section, a compression section, a load-carrying section, and may include one or more platform sections wherein at least one of the belt sections is made of a rubber matrix having a plurality of discrete aramid fibers embedded therein with the fibers having a comparatively high aspect ratio and being tenaciously bonded in position.

Abstract: An endless power transmission belt and method of making same is provided wherein such belt is defined by a helically wound elongated strip of polymeric material having load-carrying means extending throughout its length with the strip having adjoining turns thereof bonded together so that the polymeric material thereof is a homogeneous mass and the belt is a unitary structure.

Abstract: A substantially trapezoidal endless belt structure having reduced coefficient of friction raw-edged non-parallel sides is provided and comprises a tension section, a compression section, and load-carrying means disposed between the sections with each of such sections being made of an elastomeric compound having anti-friction properties which reduce the coefficient of friction of such sides.