US3765978A - Method of making a low-friction fabric bearing - Google Patents

Method of making a low-friction fabric bearing Download PDF

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Publication number
US3765978A
US3765978A US00160661A US3765978DA US3765978A US 3765978 A US3765978 A US 3765978A US 00160661 A US00160661 A US 00160661A US 3765978D A US3765978D A US 3765978DA US 3765978 A US3765978 A US 3765978A
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United States
Prior art keywords
fabric
filaments
yarn
tfe
synthetic resin
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Expired - Lifetime
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US00160661A
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English (en)
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Richard J Matt
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Torrington Co Ltd
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Textron Inc
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Assigned to TORRINGTON COMPANY, THE reassignment TORRINGTON COMPANY, THE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TEXTRON INC.
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/201—Composition of the plastic
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/447—Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249922—Embodying intertwined or helical component[s]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • Y10T428/2925—Helical or coiled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2936—Wound or wrapped core or coating [i.e., spiral or helical]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer
    • Y10T428/2969—Polyamide, polyimide or polyester
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2971—Impregnation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2008—Fabric composed of a fiber or strand which is of specific structural definition

Definitions

  • ABSTRACT Improved wear and load-carrying properties result for a resin-impregnated fabric bearing wherein the bearing surface includes, as the most significant fabric component, a yarn which is a compounded bundle of sized TFE filaments and sized filaments of hightemperature nylon, in the proportion of at least no more than 50 percent TFE by volume.
  • the yarn is loosely twisted, to the extent that after construction of a fabric with said yarn, the yarn is fully washable, to remove the sizing, down to the innermost filaments. This enables full impregnation of the fabric with synthetic resin, and curing in substantially intimate and continuous and void-free relation of the resin to all filaments within the yarn of the fabric.
  • TFE tetrafluoroethylene
  • Another object is to provide an improved yarn for use as the low-friction component of a bearing of the character indicated.
  • a further object is to provide a method and means whereby increased body density is provided in support material for low-friction fibers at the bearing surface.
  • a still further object is to meet the above objects with greater load-bearing capacity, longer-wear performance and capability of operation at higher temperatures than heretofore.
  • a specific object is to provide increased support for low-friction fibers at the bearing surface, whereby TFE filaments are better retained against rolling to the point of breakage.
  • FIG. 1 is an enlarged simplified fragmentary view in perspective to illustrate a yarn of the invention
  • FIGS. 2 and 3 are similar simplified and enlarged fragmentary sectional views through part of a bundle of filaments in yarn of the invention, at different stages of a method of the invention;
  • FIG. 4 is an even more greatly enlarged sectional view through part of a bearing of the invention.
  • FIG. 5 is a simplified longitudinal sectional view of a complete bearing embodying the invention.
  • the invention contemplates major reliance upon filaments of high-temperature nylon to function with TFE filaments in the yarn which is compounded for use as the low-friction bearing surface in a fabric bearing, the bearing being completed and consolidated by a cured synthetic resin.
  • the nylon provides high strength and stability at elevated temperatures and is present in the yarn to the extent of at least 50 percent by volume of all filamentary components (including the TFE); preferably, the TFE filaments are present to the extent of 20 to 30 percent by volume.
  • the filaments of the yarn be relatively loose and that they be subjected to as little twist as possible, consistent with an ability to handle the yarn, as in the process of constructing a bearing fabric in which said yarn appears as the major component of the bearing-surface material, on at least one side of the fabric.
  • the filaments to be compounded into the yarn are supplied with a very thin sizing agent or coating which simplifies handling in the construction of a fabric. It is difficult to show the dimensional significance of this coat, and in the past its presence has been neglected.
  • the sizing coat on commercially available filaments e.g., of TFE, or of high-temperature nylon
  • curing temperatures for the synthetic impregnating resin are such as to generate fine bubbles or otherwise to react with the sizing agent.
  • the product of such reaction e.g., gas bubbles generated upon heating sizing agents containing vinyl alcohols, becomes a'permanent part of the cured resin in the immediate vicinity of the filament to be supported. Not only is the density of resin thereby reduced at and near the bearing surface, but filament support and entrapment by the resin are materially degraded.
  • the first four figures illustrate the foregoing on a simplified basis, for the case of yarn made of a bundle 10 of continuous sized TFE filaments, loosely twisted with a bundle ll of continuous sized filaments of hightemperature nylon (FIG. 1). This is the yarn which becomes the significant bearing-surface component, whether the fabric is braided, knitted or woven.
  • FIG. 2 illustrates, with great and obvious exaggeration, the sizing coat 12 for each filament 13 in a yarn bundle.
  • the coated filaments are not drawn tight, thanks to the bare minimum of twist, thus rendering the bundle readily susceptable to washing in a solvent for the sizing agent. Washing thoroughly removes the sizing agent, allowing full synthetic-resin penetration, as suggested at 14 in FIG. 3.
  • FIG. 4 such a relationship appears in greater detail, illustrating that TFE filaments (13') and high-temperature nylon filaments (13”) both appear at the bearing surface 15, the contour of which depends upon that of a contour-forming surface 16; surface 16 is seen as part of a molding element 17 to which the fabric is conformed in producing the desired bearing surface 15.
  • a satin-weave fabric, with 4:1 face, is produced using a multi-component warp yarn of the invention, and a filling yarn of continuous-filament, type 430 Nomex, the latter being a designation by the EL duPont Company for a particular one of its high-temperature nylons.
  • the filling yarn is strictly described, for each end, as 200/100/38, of the type 430 Nomex; i.e., ZOO-denier Nomex yarn, consisting of 100 filaments, said yarn being twisted three times per inch.
  • the warp yarn is strictly described as one end of 400/60/0 Teflon* (du- Pont Company trademark for its TFE filament.) and two ends of 200/100/0 type 430 Nomex; in other words, the TFE end comprises 400-denier TFE yarn with 60 filaments, and with zero twist, while the two Nomex ends are each as described for the filler, but with zero twist.
  • the components of the warp yarn are then twisted three turns per inch.
  • the sectional areas of the TFE filaments and Nomex filaments in the warp yarn are chosen to present about 25 percent TFE at the bearing surface, the rest of the bearing-surface filaments being Nomex.
  • the fabric After weaving, the fabric is thoroughly washed in boiling water to remove the sizing, should the sizing happen to be water-soluble. Then after appropriate rinsing, drying and pressing, the fabric is cut and applied as the liner 20 of a plane spherical bearing (see FIG.
  • the inner ring 21 is a spherical ball which is first coated with a suitable moldrelease agent.
  • the outer ring 22 is deformable and ultimately has a spherical bore as shown, but this is initially a straight cylindrical bore into which is inserted a cutting from the washed fabric, suitably coated with an uncured synthetic-resin adhesive; the adhesive may be a phenolic, epoxy, fluroethylene-propylenc (FEP), or polyimide. Ring deformation, bonding and curing may proceed generally as described in Litsky U.S. Pat. No. 3,303,557.
  • the completed bearing exhibits superior performance, exceeding that of all-Teflon surfaced bearings in the important respects of maximum load, life (i.e., low wear) under load, and in general a higher upper temperature limit for satisfactory operation, the latter feature being a function of the synthetic resin and of the non Teflon yarns or yarn components.
  • the bearing fabric is again a satin weave, differing from Example One only in the use of a polyester filling rather than a Nomex filling.
  • the filling yarn for the back comprises one end, 60/2 cotton-count spun continuous-filament polyester, known as Kodel* (Kodel is a trademark of the Eastman Kodak Company for its polyester fiber.) No. IV, high tenacity, Type 421, 1 A denier.
  • the fabric is washed thoroughly in boiling water to remove all size, and then dried and pressed before assembly into a bearing. Drying proceeds at 325F for minutes in an air-circulating oven, to accomplish a heat soak and fabric shrink, within the curing temperature of the synthetic resin (in this case, phenolic), so as to avoid or materially reduce shrinking during the resin cure.
  • the synthetic resin in this case, phenolic
  • EXAMPLE THREE The bearing fabric is again a satin weave, differing from the foregoing only in the use of glass-fiber yarn as the filling. This filling is described as one end ECE 450% Fiberglas yarn. Washing and finishing are as described for Example One.
  • the bearing fabric is a tubular braid, of yarns constructed generally as described for the warp yarn of Example One, the same being cut to length and applied to a mandrel of desired contour, coated with a release agent, and the braid is backed by a Fiberglas-epoxy matrix, as described in greater detail in copending Matt, et al. application Ser. No. 94,091, filed Dec. 1, 1970, now US. Pat. No. 3,692,375. The size is removed after braiding and before application to the mandrel.
  • the bearing fabric is a knitted tube, conventionally fabricated of yarns generally as described for the warp yarn of Example One, the same being cut to length, applied to a mandrel, and backed and consolidated as for Example Four. Again, size is removed after knitting and before application to the mandrel.
  • the described yarns, fabrics and bearings will be seen to achieve all stated objects, with superior results. And, the particular examples are purely illustrative, in that other combinations may be used within the invention.
  • the particular advantages are that the Nomex filaments substantially improve wear-resistance. The removal of sizing from the fabric assures enhanced resin density, for greater bonding to the Nomex and therefore better localized support of TFE filaments exposed at the bearing surface. If still further bonding to all filaments is desired, the TFE filaments should be etched.
  • TFE filaments are realized by the time the proportion of TFE at the bearing surface has reached 50 percent; in fact, when the added strength of the combining Nomex is taken into account, the best results are achieved for a TFE proportion of 20 to 30 percent by volume, as in the examples presently given.
  • the method of making a low-friction bearing surface which comprises selecting a loosely twisted yarn consisting of sized TFE filaments and of hightemperature nylon filaments, constructing a fabric with said yarn as the major component on at least one side,
  • washing step is performed at a selected elevated temperature in the range up to the boiling condition of the washing agent, whereby washing is accompanied by a controlled degree of fabric shrinkage prior to resin-impregnation and cure.
  • said yarn comprises a filament bundle twisted to an extent not substantially exceeding three twists per inch.
  • TFE filaments and high-temperature nylon filaments are in the proportion of at least no more than 50 percent TFE by volume.
  • TFE filaments and high-temperature nylon filaments are in the proportion of 20 to 30 percent TFE by volume.
  • the method of making a low-friction fabric bearing surface which comprises selecting a loosely twisted yarn consisting of continuous TFE filaments and of continuous high-temperature nylon filaments, constructing a fabric with said yarn as the major component on at least one side, said fabric including a filamentary polyester as a component, preshrinking the fabric by heat-soaking the same under predetermined conditions of elevated temperature and time within substantially the manufacturers specified soak limits for the polyester, impregnating the fabric with an uncured synthetic resin selected for cure temperature within the predetermined elevated heat-soak temperature, conforming said one side to a desired bearingsurface contour, and curing the resin while the fabric is thus conformed.
  • the method of making a low-friction bearing fabric which comprises selecting a loosely twisted yarn comprising sized TFE filaments and high-temperature nylon filaments as the most predominant components, constructing a fabric with said yarn as the major component on at least one side, and washing the fabric in sizing-agent solvent to remove sizing, whereby when said one side of said fabric is later embodied in a bearing surface potted with a synthetic resin, the resin is induced to flow into and throughout the cleaned and loose yarn bundles, for substantially intimate and continuous and void-free consolidation therewith.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Reinforced Plastic Materials (AREA)
  • Woven Fabrics (AREA)
US00160661A 1971-07-08 1971-07-08 Method of making a low-friction fabric bearing Expired - Lifetime US3765978A (en)

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US16066171A 1971-07-08 1971-07-08

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US05/376,235 Expired - Lifetime US4074512A (en) 1971-07-08 1973-07-03 Low-friction fabric bearing

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US05/376,235 Expired - Lifetime US4074512A (en) 1971-07-08 1973-07-03 Low-friction fabric bearing

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US (2) US3765978A (ja)
JP (3) JPS5838650B1 (ja)
CA (1) CA950520A (ja)
DE (1) DE2150847C3 (ja)
FR (1) FR2145130A5 (ja)
GB (1) GB1352755A (ja)

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US3815468A (en) * 1972-01-20 1974-06-11 Textron Inc Braided fabric bearing liner
US3844195A (en) * 1972-05-26 1974-10-29 Du Pont Products
US4062989A (en) * 1976-06-14 1977-12-13 M. Lowenstein & Sons, Inc. Method and apparatus for coating moving webs and products produced thereby
US4157788A (en) * 1977-08-01 1979-06-12 Thiokol Corporation Low friction, movable, rocket nozzle
US4456653A (en) * 1980-05-09 1984-06-26 Ciba-Geigy Corporation Pin for connecting machine elements with each other
US4997067A (en) * 1989-06-26 1991-03-05 Fenner America, Inc. Friction apparatus
US5387300A (en) * 1991-09-04 1995-02-07 Kitamura; Atsushi Method of manufacturing a seamless tubular woven article including polytetrafluoroethylene yarn
US5631085A (en) * 1992-09-04 1997-05-20 Hoechst Aktiengesellschaft Compound yarn producing the sliding layer of plain bearings made of fiber-reinforced thermoplastics
US5952067A (en) * 1996-12-02 1999-09-14 A&P Technology, Inc. Braided structure having uncrimped strands
DE19845442A1 (de) * 1998-10-02 2000-04-20 Cyril Xavier Latty Dichtungspackung
EP1234989A1 (en) * 2001-02-22 2002-08-28 New Hampshire Ball Bearings, Inc. Self-lubricating bearing liner using poly(p-phenylene-2,6-benzobisoxazole)
WO2002072325A1 (en) * 2001-03-12 2002-09-19 E.S. Originals Inc. Shoe having a fabric outsole and manufacturing process thereof
US20030009919A1 (en) * 2000-07-20 2003-01-16 E.S. Originals, Inc. Process for making a shoe outsole
US6571491B2 (en) 2001-03-12 2003-06-03 E.S. Originals, Inc. Shoe having a fabric outsole and manufacturing process thereof
US6696000B2 (en) 2000-07-20 2004-02-24 E.S. Originals, Inc. Method of making a shoe and an outsole
US20040213492A1 (en) * 2003-04-23 2004-10-28 Michael Kim Composite bearings

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CA1031024A (en) * 1974-10-01 1978-05-09 Textron Inc. Low-friction fabric bearing and method of making the same
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US4720943A (en) * 1986-11-03 1988-01-26 Monsanto Company Cord structure
DK8289A (da) * 1988-01-12 1989-07-13 Raychem Ltd Kompositmateriale
US4832101A (en) * 1988-02-17 1989-05-23 The Goodyear Tire & Rubber Company Pneumatic tires
US4893665A (en) * 1988-02-17 1990-01-16 The Goodyear Tire & Rubber Company Cables for reinforcing deformable articles and articles reinforced by said cables
US5809861A (en) * 1988-02-18 1998-09-22 Whizard Protective Wear Corp. Yarn having a braided covering thereon and safety apparel knitted therefrom
DE4330565C1 (de) * 1993-09-09 1994-08-18 Porsche Ag Kurbelwellenlager
US5829057A (en) * 1994-03-24 1998-11-03 Robert T. Gunn Low friction outer apparel
US5590420A (en) * 1994-03-24 1997-01-07 Gunn; Robert T. Low friction apparel
US5628172A (en) * 1994-08-31 1997-05-13 Nathaniel H. Kolmes Composite yarns for protective garments
GB2320934A (en) * 1997-01-06 1998-07-08 Palencia Ltd Yarn for use in tufted fabrics
US6143368A (en) * 1998-02-10 2000-11-07 Gunn; Robert T. Low coefficient of friction fibers
KR100754706B1 (ko) * 1999-06-14 2007-09-03 이 아이 듀폰 디 네모아 앤드 캄파니 신장 분할 방법 및 제품
US7100246B1 (en) * 1999-06-14 2006-09-05 E. I. Du Pont De Nemours And Company Stretch break method and product
DE19950621A1 (de) * 1999-10-20 2001-04-26 Schuler Kunststofftechnik Gmbh Gleitlager
AU4708001A (en) * 1999-11-15 2001-06-25 Robert T. Gunn Compositions with low coefficients of friction and methods for their preparation
US20060204753A1 (en) * 2001-11-21 2006-09-14 Glen Simmonds Stretch Break Method and Product
US20050191474A1 (en) * 2003-10-09 2005-09-01 Gunn Robert T. Compositions with low coefficients of friction and methods for their preparation
US7345215B2 (en) * 2003-12-22 2008-03-18 Sca Hygiene Products Ab Absorbent product with low friction zone
US20050186367A1 (en) * 2004-02-19 2005-08-25 Hanrahan James R. Low friction, abrasion-resistant materials and articles made therefrom
US7147378B2 (en) * 2004-02-19 2006-12-12 Gore Enterprise Holdings, Inc. Low friction, abrasion-resistant bearing materials
US20060182962A1 (en) * 2005-02-11 2006-08-17 Bucher Richard A Fluoropolymer fiber composite bundle
US7296394B2 (en) * 2005-02-11 2007-11-20 Gore Enterprise Holdings, Inc. Fluoropolymer fiber composite bundle
US9334587B2 (en) 2005-02-11 2016-05-10 W. L. Gore & Associates, Inc. Fluoropolymer fiber composite bundle
US8152380B2 (en) * 2006-07-07 2012-04-10 Federal-Mogul World Wide, Inc. Sleeve bearing assembly and method of construction
ES2926544T3 (es) 2010-04-16 2022-10-26 Relats Sa Tubo de protección
DE102016014816B4 (de) * 2016-12-13 2019-02-28 Robert Lorenz Lageranordnung mit wartungsfreier Fasergleitschicht
CN116497491B (zh) * 2023-06-20 2023-09-08 克州润华纺织科技有限公司 一种混纺纱生产设备及生产工艺

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US6571491B2 (en) 2001-03-12 2003-06-03 E.S. Originals, Inc. Shoe having a fabric outsole and manufacturing process thereof
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CN1471453B (zh) * 2001-03-12 2010-12-22 爱思先创有限公司 带有织物外底的鞋和其制造方法
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US4074512A (en) 1978-02-21
JPS552888A (en) 1980-01-10
DE2150847A1 (de) 1973-01-18
CA950520A (en) 1974-07-02
JPS5838650B1 (ja) 1983-08-24
DE2150847B2 (de) 1981-01-15
JPS57176924U (ja) 1982-11-09
GB1352755A (en) 1974-05-08
DE2150847C3 (de) 1981-11-05
FR2145130A5 (ja) 1973-02-16

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