Source: http://www.google.com/patents/US6117549?dq=6,263,507
Timestamp: 2016-09-29 03:17:52
Document Index: 513509367

Matched Legal Cases: ['Application No. 2150528', 'Application No. 2286939', 'Application No. 3161517', 'Application No. 52', 'Application No. 52', 'Application No. 900101093', 'Application No. 910058253']

Patent US6117549 - Heterofilaments for cord reinforcement in rubber goods - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsIn an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems....http://www.google.com/patents/US6117549?utm_source=gb-gplus-sharePatent US6117549 - Heterofilaments for cord reinforcement in rubber goodsAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6117549 APublication typeGrantApplication numberUS 08/986,926Publication dateSep 12, 2000Filing dateDec 8, 1997Priority dateFeb 19, 1993Fee statusPaidAlso published asUS5658655, US5672421, US5744237Publication number08986926, 986926, US 6117549 A, US 6117549A, US-A-6117549, US6117549 A, US6117549AInventorsJohn D. GibbonOriginal AssigneeArteva North America S.A.R.L.Export CitationBiBTeX, EndNote, RefManPatent Citations (27), Non-Patent Citations (16), Referenced by (4), Classifications (11), Legal Events (21) External Links: USPTO, USPTO Assignment, EspacenetHeterofilaments for cord reinforcement in rubber goods
US 6117549 AAbstract
In an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems.
1. A multifilament composite yarn comprising sheath-core heterofilaments thermally bonded to one another and having a core component composed of a relatively high melting point polymer and a fusible sheath component surrounding said core component and consisting essentially of poly(butylene terephthalate) polymer having a relatively low melting point.
2. The multifilament composite yarn of claim 1 wherein the core component is polyester or polyamide.
3. The multifilament composite yarn of claim 1 wherein the core comprises polyethylene terephthalate.
This is a continuation of application Ser. No. 08/323,164, filed Oct. 13, 1994, now abandoned, which is a continuation-in-part of application Ser. No. 08/020,875, filed Feb. 19, 1993, now abandoned.
Power transmission belts, for example V-belts and ribbed V-belts, are well known (See: Wake, N. C., et al., "Textile Reinforcement of Elastomers", Applied Science Publishers, Englewood, N.J., 1982). Such power transmission belts typically comprise rubber impregnated fabric layers disposed on the belt's innermost and outermost circumferential surfaces, and a layer of a masticated rubber/staple fiber mixture and a layer of circumferentially disposed reinforcing cord being sandwiched therebetween. The reinforcing cord or "stiff cord" is typically made from an adhesive impregnated, multi-filament yarn. Exemplary yarns include filaments of nylon, polyester, and rayon, polyester being preferred because of its superior properties.
Generally, these belts are made by laying up the above-mentioned layers, in an inverted order, on a drum. First, a layer of rubber impregnated fabric is laid on the drum. Then, the reinforcing cords are laid up. Next, a layer of masticated rubber/staple fiber is laid up. Finally, a second layer of rubber impregnated fabric is applied to the construction. The foregoing is then vulcanized, thereby forming a "large tube". From this tube, individual belts are cut.
One problem with this type of belt is "cord pop-out". "Cord pop-out", or fraying of cord from the belt's cut edge, seriously diminishes the belt's useable life span because the loss of cord from the belt accelerates wear on the belt leading to its ultimate failure. Cord pop-out and situations which lead to cord pop-out can arise during manufacture and use of the belt. In manufacture, when belts are cut from the tube, the cord or the yarn in the cord can be stripped away. In use, as the belts leaves the sheave, the cord or the yarn may "pop-out" of the belt because of the reduction of lateral compressive force on the belt.
"Cord pop-out" is such a serious concern that the reinforcing cords or "stiff cords" are impregnated with an adhesive to facilitate inter-filament bonding. Inter-filament bonding within the yarn and cord reduces the possibility of individual filaments popping from the belt and begin fraying from the belt. Typical adhesives for inter-filament bonding include isocyanate systems which are normally applied to the cord in a solvent carrier. The solvent/isocyanate systems is necessary so that the isocyanate penetrates in between the filaments of the yarn and thereby facilitates inter-filament bonding (See: Wake, W. C., Ibid., pg. 89-90). These solvents, however, pose significant environmental problems (See: Wake, N. C., Ibid.). These adhesive systems for inter-filament bonding should be differentiated from the resinol-formaldehyde-latex (RFL) systems (aqueous based systems) which are applied to the cord. The RFL systems enhance and promote adhesion of the cord to the surrounding rubber.
There is also a need to develop new cord reinforcement products for the rubber goods industry. The rubber goods industry includes any rubber product which uses a reinforcing cord, e.g. power transmission belts, conveyor belts, tires, and the like. Polyester (i.e. polyethylene terephthalate) reinforcement cord is a reinforcement product of choice in most of those applications because of its strength and dimensional stability, but polyester cord suffers because of its inherently poor adhesion to rubber. Consequently, adhesives systems have been devised that overcome the poor adhesion. Work, however, continues to improve the adhesion of polyester to rubber.
This invention is directed to an improved power transmission belt having circumferentially disposed reinforcing cords. Each cord is made from multi-filament yarns. The improvement is the multi-filament yarns comprise heterofilaments.
Referring to FIG. 1, there is shown a power transmission belt 10. Belt 10 is representative of the construction of power transmission belts, and illustrates the invention, however, this particular construction should not be construed as limiting the invention. Belt 10 is referred to, by those of ordinary skill in the art, as "cut edge" or "raw edge" V-belt. Those of ordinary skill will readily recognize the applicability of this invention to other power transmission belts, e.g. ribbed V-belts.
The components of belt 10 generally include: a rubber coated fabric 12; a layer 14 of masticated rubber with a fiber filler; a reinforced cord section 16 (section 16 comprises a plurality of heterofilament cords, see FIG. 3); and a rubber coated fabric 18. These power transmission belts may be manufactured in any conventional manner, for example see: "Vanderbilt Rubber Handbook", R. T. Vanderbilt Co., Inc., Norwalk, Conn. (1978); Blow, C. M., et al. (ed.), "Rubber Technology and Manufacture", 2nd Edition, The Plastics and Rubber Institute University Press, NY, N.Y., (1989); and Wake, W. C., et al., "Textile Reinforcement of Elastomers", Applied Science Publishers, Englewood, N.J., (1982); each of these references are incorporated herein by reference.
The term "filament" or "fiber", as used herein, refers to the components which make up a yarn. The term "yarn", as used herein, is a generic term for a continuous strand of fibers, or filaments. The term "cord", as used herein, refers to the product formed by twisting together or "plying" one or more yarns.
Referring to FIGS. 2 and 3, a prior art cord 20 and inventive cord 30 are illustrated respectively. Both cords are shown as being made from three plied yarns. Cords used in the manufacture of power transmission belts are not so limited and neither is the instant invention. Prior art cord 20 comprises three plied yarns 22. Yarn 22 may be a 1000 total denier yarn of 192 filaments. The individual filaments are bound together with an adhesive system (i.e., the inter-filament bonding systems) as discussed above.
Cord 30 comprises yarns 32. Yarns 32 comprise heterofilaments 34. Heterofilaments 34 are illustrated as, but not limited to, sheath/core heterofilaments. Sheath 36 surrounds core 38. These heterofilaments 34 include a fuseable portion (e.g., sheath 36) which can eliminate the need for the solvent/adhesive systems, because the heterofilaments, when heated under pressure, as is well known, can bond to one another. These heterofilaments 34 may be fused prior to manufacture of the belt or during vulcanization of the belt or a combination of both.
Heterofilaments are known in the art (e.g., see U.S. Pat. Nos. 3,616,183 and 3,998,988, both are incorporated herein by reference). Heterofilaments are known as "bi-component fibers", "conjugate fibers", "heterofils", or "composite fibers". Heterofilament, as used herein, refers to a filament made from a thermoplastic, synthetic, organic polymer composed of a relatively high melting polymer component and a relatively low melting polymer component. Generally, the heterofilaments are either a sheath/core type or a side-by-side type. In either embodiment, both components of the heterofilament will be present in a continuous phase.
The high melting point polymer component may have a melting point about 30� C. greater than that of the lower melting point polymer component. Preferably, a sheath/core heterofilament is used, with the core comprising of about 80% of the heterofilament.
The polymer used for the production of the heterofilament is a thermoplastic, synthetic, organic polymer. Examples of the polymer include, but are not limited to: polyesters; polyamides; polyolefins; polystrenes; polyurethanes; polyesteramides; and mixtures thereof.
The high-melting point polymer component maybe a polyester or a polyamide. The polyester maybe polyethylene terephthalate (PET). The polyamide maybe nylon-6 or nylon-6,6.
The low-melting point polymer component maybe selected from the following exemplary polymers: polystrenes; polyolefins; polyvinyls; polyesters; or polyurethanes. Non-limiting examples of the foregoing polymers are as follows: polyolefins-polyethlene, polyproplene; polyvinyls-polyacrylonitrile, polyvinyl chloride; and polyesters-polybutylene terephthalate or polyester modified with an acid or a glycol. Examples of the forementioned acid include, but are not limited to: isophthalic acid; phthalic acid; adipic acid; sebacic acid. Examples of the forementioned glycol include, but are not limited to: trimethylene glycol; hexamethylene glycol; cyclohexane dimethanol.
The cord to rubber adhesion is improved by the use of PBT/PET-based cord versus conventional polyethylene terephalate cords (i.e., non-heterofilaments). This effect is applicable to any adhesive activated or non-adhesive activated yarn using an adhesive system of, for example, Resinol-Formaldehyde-Latex (RFL) adhesives and RFL's modified with phenol-blocked methylene diisocyanates and/or caprolactan-blocked methylene diisocyanate, and any of the foregoing maybe modified with a topcoat (for example containing 0.10% by weight silane epoxy). The effect is not apparently applicable when a combination of Ner 10A epoxy and phenol-blocked methylene diisocyanate adhesives is used.
Improved cord to rubber adhesion is demonstrated in the following examples. The adhesion of rubber to cord is examined by comparing a conventional polyester (i.e. polyethylene terephthalate) cord (i.e. Hoechst Celanesel's T793 yarn product) to the inventive material (cord made from PBT/PET sheath/core yarns). The cord construction is 1000/2/3, unless otherwise noted. Each yarn (conventional and heterofilament) is adhesive activated, for example see U.S. Pat. No. 5,328,765 incorporated herein by reference. The cords are treated with conventional RFL's or RFL's modified with phenol-blocked methylene diisocyanate with a two zone drying/cure of either 300� F. for 90 sec at 4530 g tension followed by 460� F. for 90 sec at 6804 g tension, or 300� F. for 90 sec at 4530 g tension followed by 450� F. for 90 sec at 6804 g tension, or 300� F. for 90 sec at 4530 g tension followed by 450� F. for 90 sec at 6804 g tension. The cords treated with the combination of Ner 10A epoxy and phenol-blocked methylene diisoryanate were treated in a double dip system with the epoxy cure at 440� F. for 30 sec at 4530 g tension and the RFL cure at 225� F. for 70 sec at 4530 g followed by 450� F. for 50 sec at 6804 g tension.
The test strips were made as follows: A layer of rubber is wrapped around a wind up drum. This is followed by a layer of the test sample. The samples are cut and sandwiched with a layer of thin rubber between them. After curing in a steam heated press, the samples are cut into one inch strips and pulled apart under heat on an Instron-type tensile tester. The average number of pounds to pull the strip apart is a measure of the peel resistance of the sample. Samples maybe tested at room temperature, at 250� F. (in an environmental chamber), or after a 2 hr steaming in an autoclave (15 psi steam).
The rubbers used include: "PET" from Michelin (a tire rubber formerly a product of Uniroyal-Goodrich); Neoprene "D" (used in V-belts); and neoprene (a Goodyear product for V-belts).
The results are reported as follows: Adhesion (in pounds/inch) is shown a function of the cord and adhesive system; also reported is a visual rating of 0-5 that indicates where failure occured i.e. at the cord/rubber interface or in the rubber, wherein "0" indicates no rubber tear and "5" indicates complete rubber tear.
In FIGS. 4, 5, & 7, for each sample, the left hand bar is testing at room temperature, the middle bar, testing after 2 hr steaming, and the right, testing at 250� F. In FIGS. 6, & 8-10, for each sample, the left bar is testing at room temperature, and the right, after 2 hr. steaming.
In FIG. 4, "PET" type rubber is used and "A" is polyethylene terephthalate (PET) cord with RFL, "B" is PET cord with RFL and 5% by weight phenol-blocked methylene diisocyanate (LVBI), "C" is PBT/PET cord with RFL, and "D" is PBT/PET cord with RFL and 5% by weight phenol-blocked methylene diisocyanate (LVBI).
In FIG. 5, Neoprene "D" rubber is used and "A" is PET cord with RFL, "B" is PET cord with RFL/5% LVBI, "C" is PBT/PET cord-RFL, and "D" is PBT/PET cord-RFL/5% LVBI.
In FIG. 6, "PET" rubber is used and "A" is PET cord with Ner 10A epoxy/LVBI & RFL, "B" is PBT/PET cord-Ner 10A/LVBI & RFL, "C" is PBT/PET cord-Ner 10A/LVBI & RFL with a topcoat (containing 0.1% by weight silane epoxy), "D" is PET cord-RFL/5% LVBI, "E" is PBT/PET cord with RFL/5% LVBI, and "F" is PBT/PET cord with RFL/5% LVBI with a topcoat (containing 0.1% silane) epoxy.
In FIG. 7, neoprene rubber is used and "A" is PET cord-RFL, "B" is PET cord-RFL/5% LVBI, "C" is PBT/PET cord-RFL and "D" is PBT/PET cord-RFL/5% LVBI.
In FIG. 8, neoprene rubber is used and "A" is PET cord-RFL, "B" is PBT/PET cord-RFL, "C" is PBT/PET cord-RFL and a topcoating (0.1% silane epoxy), "D" is PET cord-RFL/5% LVBI, "E" is PBT/PET cord-RFL/5% LVBI, "F" is PBT/PET cord-RFL/5% LVBI and a topcoating (0.1% silane epoxy).
In FIG. 9, "PET" rubber is used and "A" is PET cord-RFL, "B" is PBT/PET cord-RFL, "C" is PBT/PET cord-RFL, and a topcoating (0.1% silane epoxy), "D" is PET cord-RFL/LVBI, "E" is PBT/PET cord-RFL/LVBI, and "F" is PBT/PET cord-RFL/LVBI, and a topcoating (0.1% silane epoxy).
In FIG. 10, neoprene rubber is used and "A" is PET-Ner 10A epoxy LVBI & RFL, "B" is PBT/PET-Ner 10A epoxy/LVBI & RFL; "C" is PBT/PET-Ner 10A epoxy/LVBI & RFL and a topcoat (0.1% silane epoxy); "D" is PET-RFL 15% LVBI; "E"-PBT/PET-RFL 15% LVBI; and "F"PBT/PET-RFL 15% LVBI and topcoat (0.1% silane epoxy).
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS3616183 *Mar 17, 1969Oct 26, 1971Ici LtdPolyester sheath-core conjugate filamentsUS3645819 *Mar 13, 1968Feb 29, 1972Toray IndustriesMethod for manufacturing synthetic multicore elementsUS3998988 *Jul 11, 1975Dec 21, 1976Teijin LimitedConjugate fiber, fibrous material and fibrous article made therefrom and process for production thereofUS4017580 *Jun 2, 1975Apr 12, 1977Rhone-Poulenc-TextileProcess and apparatus for manufacturing non-woven webs of continuous thermoplastic filamentsUS4355069 *Mar 17, 1981Oct 19, 1982Dayco CorporationFlexible load-carrying cord, apparatus and polymeric construction utilizing sameUS4389839 *Jan 7, 1981Jun 28, 1983Akzo NvReinforcing cord for elastomeric articles, shaped articles of reinforced elastomeric material, more particularly pneumatic tires for vehicles, and a process for the manufacture of reinforcing cord and a process for the manufacture of vehicle tiresUS4451314 *Dec 3, 1982May 29, 1984Firma Carl FreudenbergMethod for the manufacture of a fluffy, light-weight, soft nonwoven fabricUS4518658 *May 21, 1984May 21, 1985Rhone-Poulenc FibresWaterproof membrane with fuse bonded non-woven reinforcementUS4522614 *Aug 23, 1984Jun 11, 1985Bando Chemical Industries, Ltd.Automatic tension maintaining transmission beltUS4598013 *Apr 12, 1983Jul 1, 1986Burlington Industries, Inc.Seamless product for reinforcing and stabilizing V-belts and methods to produce sameUS4907527 *Dec 15, 1987Mar 13, 1990General Electric CompanyPultrusion apparatus and method for impregnating continuous lengths of multi-filament and multi-fiber structuresUS4987030 *Oct 4, 1988Jan 22, 1991Toray Industries, Inc.High-tenacity conjugated fiber and process for preparation thereofUS5162153 *May 4, 1992Nov 10, 1992Hoechst Celanese CorporationPoly(butylene terephthalate) copolyester and a process for preparing itUS5201689 *Nov 5, 1991Apr 13, 1993Akzo N.V.Stiff cordUS5249414 *Dec 12, 1991Oct 5, 1993Nissinbo Industries, Inc.Yarn for use in set upUS5256050 *Jun 5, 1992Oct 26, 1993Hoechst Celanese CorporationMethod and apparatus for spinning bicomponent filaments and products produced therefromUS5318845 *Jan 13, 1993Jun 7, 1994Kuraray Co., Ltd.Conductive composite filament and process for producing the sameUS5366797 *Jan 13, 1993Nov 22, 1994Hoechst AktiengesellschaftBonded yarn bundle, and textile sheet materials obtainable therefromUS5366804 *Mar 31, 1993Nov 22, 1994Basf CorporationComposite fiber and microfibers made therefromUS5468555 *Oct 25, 1994Nov 21, 1995Akzo N.V.Yarn formed from core-sheath filaments and production thereofUS5744237 *Jun 10, 1996Apr 28, 1998Hoechst Celanese CorporationHeterofilaments for cord reinforcement in rubber goodsGB1532076A * Title not availableJPH038828A * Title not availableJPH0226944A * Title not availableJPH05132812A * Title not availableJPH06101116A * Title not availableJPS59216934A * Title not available* Cited by examinerNon-Patent CitationsReference1 *Abstract of Japanese Patent Application No. 2150528 to Toray Ind. Inc. (pub. date Jun. 8, 1990).2 *Abstract of Japanese Patent Application No. 2286939 to Yokohama Rubber kk (pub. date Nov. 27, 1990).3 *Abstract of Japanese Patent Application No. 3161517 to Toray Ind. Inc. (pub. date Jul. 11, 1991).4 *Abstract of Japanese Patent Application No. 52 74445 to Tsubakimoto Chain KK (pub. date Jan. 24, 1979).5Abstract of Japanese Patent Application No. 52-74445 to Tsubakimoto Chain KK (pub. date Jan. 24, 1979).6 *Abstract of Japanese Patent Application No. 900101093 to Toray Ind. Inc. (pub. date Jan. 6, 1992).7 *Abstract of Japanese Patent Application No. 910058253 to Kuraray Co., Ltd. (pub. date Sep. 29, 1992).8 *Abstract of Japanese Patent No. 45003291 to Asahi Chemical Co.9 *Derwent Abstract of Japanese Kokai 5 132812.10Derwent Abstract of Japanese Kokai 5-132812.11 *Derwent Abstract of Japanese Kokai 59 216934.12Derwent Abstract of Japanese Kokai 59-216934.13 *Derwent Abstract of Japanese Kokai 6 101116.14Derwent Abstract of Japanese Kokai 6-101116.15 *Rubber Technology Handbook, Werner Hofmann, Carl Hanser Verlag, Munich Vienna NY 1989.16 *Textile Reinforcement of Elastomers, I. Wake, William C. II. Wootton, David B., Applied Science Publishers Ltd. 1982.* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS7037578Dec 11, 2002May 2, 2006The Goodyear Tire & Rubber CompanyPower transmission beltUS7550195Dec 21, 2004Jun 23, 2009Veyance Technologies, Inc.Power transmission beltUS20040115413 *Dec 11, 2002Jun 17, 2004Lofgren Jeffery DwightPower transmission beltUS20050119082 *Dec 21, 2004Jun 2, 2005The Goodyear Tire & Rubber CompanyPower transmission belt* Cited by examinerClassifications U.S. Classification428/373, 428/374International ClassificationF16G5/06, F16G1/08Cooperative ClassificationY10T428/2929, Y10T428/2931, Y10T428/24, F16G1/08, F16G5/06European ClassificationF16G5/06, F16G1/08Legal EventsDateCodeEventDescriptionSep 27, 1999ASAssignmentOwner name: ARTEVA NORTH AMERICA S.A.R.L., SWITZERLANDFree format text: CHANGE OF NAME;ASSIGNOR:HOECHST CELANESE CORPORATION;REEL/FRAME:010121/0798Effective date: 19990504Dec 20, 1999ASAssignmentOwner name: ARTEVA NORTH AMERICA S.A.R.L., SWITZERLANDFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GIBBON, JOHN D.;REEL/FRAME:010480/0173Effective date: 19991214Feb 26, 2004FPAYFee paymentYear of fee payment: 4May 19, 2004ASAssignmentOwner name: INVISTA NORTH AMERICA S.A R.L., SWITZERLANDFree format text: CHANGE OF NAME;ASSIGNOR:ARTEVA NORTH AMERICA S.A.R.L.;REEL/FRAME:014646/0250Effective date: 20040503Jun 23, 2004ASAssignmentOwner name: JPMORGAN CHASE BANK, N.A., TEXASFree format text: SECURITY INTEREST;ASSIGNOR:INVISTA NORTH AMERICA S.A.R.L. F/K/A ARTEVA NORTH AMERICA S.A.R.;REEL/FRAME:015592/0824Effective date: 20040430Mar 24, 2005ASAssignmentOwner name: INVISTA NORTH AMERICA S.A.R.L., NORTH CAROLINAFree format text: CHAGE OF ADDRESS;ASSIGNOR:INVISTA NORTH AMERICA S.A.R.L.;REEL/FRAME:016568/0101Effective date: 20040501Feb 15, 2008FPAYFee paymentYear of fee payment: 8Mar 10, 2008ASAssignmentOwner name: HARRIS N.A., ILLINOISFree format text: SECURITY AGREEMENT;ASSIGNOR:PERFORMANCE FIBERS OPERATIONS, INC.;REEL/FRAME:020617/0942Effective date: 20080307Mar 14, 2008ASAssignmentOwner name: PERFORMANCE FIBERS OPERATIONS, INC., VIRGINIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INVISTA NORTH AMERICA S.A R.L.;REEL/FRAME:020645/0580Effective date: 20080207Aug 14, 2008ASAssignmentOwner name: PERFORMANCE FIBERS OPERATIONS, INC., VIRGINIAFree format text: RELEASE BY SECURED PARTY;ASSIGNOR:HARRIS N.A.;REEL/FRAME:021387/0545Effective date: 20080812Mar 19, 2009ASAssignmentOwner name: INVISTA NORTH AMERICA S.A.R.L. (F/K/A ARTEVA NORTHFree format text: RELEASE OF U.S. PATENT SECURITY INTEREST;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT (F/K/A JPMORGAN CHASE BANK);REEL/FRAME:022427/0001Effective date: 20090206May 11, 2009ASAssignmentOwner name: PERFORMANCE FIBERS HOLDINGS FINANCE, INC., FLORIDAFree format text: SECURITY AGREEMENT;ASSIGNOR:PERFORMANCE FIBERS OPERATIONS, INC.;REEL/FRAME:022659/0978Effective date: 20090508May 18, 2009ASAssignmentOwner name: WELLS FARGO FOOTHILL, INC., AS ADMINISTRATIVE AGENFree format text: SECURITY AGREEMENT;ASSIGNOR:PERFORMANCE FIBERS OPERATIONS, INC.;REEL/FRAME:022694/0198Effective date: 20090508Aug 16, 2011ASAssignmentOwner name: FSJC VIII, LLC, AS AGENT, CONNECTICUTFree format text: SECURITY AGREEMENT;ASSIGNOR:PERFORMANCE FIBERS OPERATIONS, INC.;REEL/FRAME:026761/0141Effective date: 20110810Feb 24, 2012FPAYFee paymentYear of fee payment: 12Mar 23, 2015ASAssignmentOwner name: DFT DURAFIBER TECHNOLOGIES HOLDINGS, INC., NORTH CFree format text: CONFIRMATION OF PATENT SECURITY INTEREST ASSIGNMENT;ASSIGNOR:PERFORMANCE FIBERS HOLDINGS FINANCE, INC.;REEL/FRAME:035259/0116Effective date: 20150313Apr 6, 2015ASAssignmentOwner name: PERFORMANCE FIBERS OPERATIONS, LLC, VIRGINIAFree format text: ENTITY CONVERSION;ASSIGNOR:PERFORMANCE FIBERS OPERATIONS, INC.;REEL/FRAME:035366/0448Effective date: 20150313Dec 21, 2015ASAssignmentOwner name: DURAFIBER TECHNOLOGIES (DFT) OPERATIONS, LLC. (FORFree format text: RELEASE BY SECURED PARTY;ASSIGNOR:WELLS FARGO CAPITAL FINANCE, LLC, SUCCESSOR BY MERGER TO WELLS FARGO CAPITAL FINANCE, INC. (FORMERLY KNOWN AS WELLS FARGO FOOTHILL, INC.), AS ADMINISTRATIVE AGENT;REEL/FRAME:037344/0307Effective date: 20151221Dec 22, 2015ASAssignmentOwner name: JPMORGAN CHASE BANK, N.A., AS AGENT, FLORIDAFree format text: SECURITY INTEREST;ASSIGNORS:DURAFIBER TECHNOLOGIES (DFT), INC.;DURAFIBER TECHNOLOGIES (DFT) OPERATIONS, LLC;DSE HOLDING CORP.;AND OTHERS;REEL/FRAME:037347/0753Effective date: 20151221Owner name: FSJC VIII, LLC, AS AGENT, CONNECTICUTFree format text: PATENT SECURITY AGREEMENT;ASSIGNOR:DURAFIBER TECHNOLOGIES (DFT) OPERATIONS, LLC (F/K/A PERFORMANCE FIBERS OPERATIONS, INC.);REEL/FRAME:037362/0781Effective date: 20151221Dec 24, 2015ASAssignmentOwner name: DURAFIBER TECHNOLOGIES (DFT), INC., NORTH CAROLINAFree format text: CHANGE OF NAME;ASSIGNOR:PERFORMANCE FIBERS, INC.;REEL/FRAME:037372/0138Effective date: 20150601Mar 9, 2016ASAssignmentOwner name: DFT2 FINANCE, LLC, FLORIDAFree format text: TRANSFER OF SECURITY INTEREST IN PATENTS;ASSIGNOR:FSJC VIII, LLC;REEL/FRAME:038044/0917Effective date: 20160226RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services