# US 2019/0376579 A1 · Fabric for Toothed Power Transmission Belt and Belt > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0376579 A1 - Document ID: US20190376579A1 - Status: Published application - Kind: A1 - Application number: 16/005,291 - Filed: 2018-06-11 - Published: 2019-12-12 - Earliest claimed: 2018-06-11 - Assignees: The Gates Corporation - Applicants: Gates Corporation - Inventors: Shawn Xiang Wu; Clifford Walker; Kevin Ward - Web page: https://patentgrep.com/patent/US20190376579A1 ## CPC - D02G 3/447: {Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement} - F16G 1/10: with textile reinforcement - D02G 3/32: Elastic yarns or threads {; Production of plied or cored yarns, one of which is elastic} - D03D 1/00: Woven fabrics designed to make specified articles - D03D 1/0094: {Belts (D03D1/0005 takes precedence)} - D03D 15/47: multicomponent, e.g. blended yarns or threads (multicomponent fibres or filaments D03D15/292) - D03D 15/56: elastic - F16G 1/28: with a contact surface of special shape, e.g. toothed - D10B 2331/02: polyamides (D10B2331/08 takes precedence) - D10B 2331/021: aromatic polyamides, e.g. aramides - D10B 2331/04: polyesters, e.g. polyethylene terephthalate [PET] - D10B 2331/14: polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles - D10B 2331/301: polyarylene sulfides, e.g. polyphenylenesulfide - D10B 2401/061: elastic - D10B 2505/02: Reinforcing materials; Prepregs - D02G: CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS - F16G: BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR - D03D: WOVEN FABRICS; METHODS OF WEAVING; LOOMS - D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES ## Abstract A fabric for reinforcing a power transmission belt including fibers of polyarylene sulfide and a belt utilizing the fabric. The fabric may have textured or elastic core wrapped stretch yarns in the longitudinal direction. Longitudinal yarns may include PPS and textured transverse yarns include nylon. Yarns may include blends of high performance fibers and nylon or other fibers. ## Claims ### Claim 1 A woven stretch fabric for reinforcing a power transmission belt comprising textured staple fibers of polyarylene sulfide and optionally some textured fibers of polyamide. ### Claim 2 (depends on 1) The fabric of claim 1 comprising warp and weft threads, wherein at least one of said warp and weft threads comprises said staple fibers of polyarylene sulfide in the form of a textured staple yarn of poly p-phenylene sulfide fibers. ### Claim 3 (depends on 2) The fabric of claim 2 wherein said poly p-phenylene sulfide fibers are present in the weft and textured to have at least 50% elongation at 2 kg tension, and said warp comprises textured polyamide fiber. ### Claim 4 (depends on 3) The fabric of claim 3 wherein said fabric further comprises as said polyamide fiber nylon-66 fibers textured to have from 1 to 20% elongation at 2 kg tension, and wherein said fabric has no elastic core thread. ### Claim 5 A power transmission belt having an elastomeric body, a tensile member embedded within said body, a pulley contact surface, and a back surface; comprising on at least one of said surfaces a woven stretch fabric comprising textured staple fibers of polyarylene sulfide and optionally some textured fibers of nylon. ### Claim 6 (depends on 5) The belt of claim 5 in the form of a toothed belt having teeth on said pulley contact surface and with said fabric covering said teeth. ### Claim 7 (depends on 5) The belt of claim 5 wherein said fabric is woven with transverse and longitudinal threads with respect to their orientation in the belt, and wherein said transverse threads comprise nylon-66 fibers, and said longitudinal threads comprise both textured nylon-66 fibers and said polyarylene sulfide fibers in the form of poly p-phenylene sulfide fibers. ### Claim 8 (depends on 7) The belt of claim 7 wherein said transverse threads are textured to achieve from 1% to 20% elongation at 2 kg tension, and said longitudinal threads are textured to achieve at least 50% elongation at 2 kg tension. ### Claim 9 (depends on 7) The belt of claim 7 wherein said longitudinal threads comprise no elastic core. ### Claim 10 A power transmission belt reinforced with a woven stretch fabric comprising longitudinal yarns oriented in the belt longitudinal direction that are capable of stretching at least about 50% and transverse yarns oriented in the belt transverse direction; with the longitudinal yarns comprising polyamide fibers and staple fibers of polyarylene sulfide; and the transverse yarns consisting of textured multifilament polyamide yarn. ### Claim 11 (depends on 10) The belt of claim 10 wherein the longitudinal yarns are textured to achieve said stretching capability. ### Claim 12 (depends on 10) The belt of claim 10 wherein the transverse yarns are textured to achieve the capability of stretching in the range of from about 1% to about 20%. ### Claim 13 (depends on 10) The belt of claim 10 wherein the transverse yarns are textured to achieve the capability of stretching in the range of from about 2% to about 10% under 2 kg tension, and said longitudinal yarns are capable of stretching at least about 80%. ### Claim 14 (depends on 12) The belt of claim 12 in the form of a toothed power transmission belt.