Including Separate Reinforcing Elements Or Plural Sheet-formed Plies Patents (Class 198/847)
  • Publication number: 20020148707
    Abstract: A seamed flexible belt having a substrate, a seam having interlocking seam members, and an optional overcoat, wherein the interlocking seam members are held together by an adhesive having a resistive, hot-melt processible, thermosetting resin and carbon filler, for use in electrostatographic, contact electrostatic, digital and other like machines.
    Type: Application
    Filed: April 11, 2001
    Publication date: October 17, 2002
    Applicant: Xerox Corporation
    Inventors: Ihor W. Tarnawskyj, Joseph A. Swift, Christopher P. Manos, Theodore Lovallo
  • Patent number: 6427728
    Abstract: A belting (10) reinforced with at least one fabric ply (16). The fabric ply (16) is a composite fabric (26). The fabric (26) has two woven layers (28, 30) and an intermediate third layer of straight warp yarns (34). The woven layers (28, 30) and straight warp yarns (34) are bound together by a plurality of binder yarns (38). Each layer (28, 30, 34) of the fabric (26) contributes substantially 25-40% to the overall strength of the fabric (26). The composite fabric (26) may be used in a multi-ply belting (10) for heavy duty applications; wherein the fabric ply (26) is the center ply (16) and provides approximately 50 to 75% of the overall belting strength. The fabric (26) may also be used as a single reinforcing ply for light duty application belting.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: August 6, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: David Joseph Maguire, Jenny Zhaoxia Yu, Frederic Pember Andresen
  • Publication number: 20020050446
    Abstract: The invention discloses a belt conveyor realized with elastic fabrics of natural or synthetic fibres having in the weft and/or in the warp fibres of conducting material able to allow the discharge of static electricity accumulated by the belt or by the objects transported by said belt.
    Type: Application
    Filed: November 26, 2001
    Publication date: May 2, 2002
    Inventor: Antonio Antoniazzi
  • Publication number: 20020036129
    Abstract: A belt used in conjunction with at least one pulley, said belt capable of cooperating with an oppositely facing endless belt to contact and convey articles, said belt comprising:
    Type: Application
    Filed: July 2, 2001
    Publication date: March 28, 2002
    Inventors: John A. Breed, Harley Morgan
  • Patent number: 6260692
    Abstract: A conveyor belt having a reinforcing layer of a synthetic fiber woven fabric embedded between an upper surface cover and a lower surface cover, wherein an elongation at break of the synthetic fiber woven fabric in a belt longitudinal direction is at least 25% and an elongation at a load 10% of a guarantee strength is not greater than 1.5%.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: July 17, 2001
    Assignee: Yokohama Rubber Co., LTD
    Inventors: Kazuo Sashide, Shigeyasu Tanaka, Osamu Shinohara, Yuji Shimotashiro, Teruo Suzuki, Osamu Toda, Ichiro Yamamoto, Shinichi Katsumata, Kojiro Mori, Yoshimitsu Fukuchi
  • Patent number: 6234305
    Abstract: An improved method of splicing a belt, and preparing a belt end to be spliced, is disclosed. The ends of the multiple reinforcing layers of the belt are prepared along spaced transverse edges in defined different geometric configurations. At a minimum, the ends of the reinforcing layers are prepared with at least two different geometric configurations.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: May 22, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Houston Channing Brown, Pedro Emilio Rengifo
  • Patent number: 6220426
    Abstract: An item-sorting unit includes a mobile frame movable in a direction of motion, and a driven endless belt mounted on the frame for rotation in a cross direction extending transversely relative to the direction of frame motion. An outer surface of the belt includes one or more upstanding curbs extending parallel to the cross direction. The curb(s) is formed of a flexible high-friction material and functions to resist movement of carried items relative to the belt.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: April 24, 2001
    Assignee: CML Handing Technology S.p.A.
    Inventor: Erminio Giana
  • Patent number: 6216853
    Abstract: A toothed conveyor belt is composed of a flexible belt body and an elastically deformable steel belt. The flexible belt body conveys articles on the outer side thereof and has meshing teeth formed on the inner side thereof for meshing with a toothed pulley. The steel belt is embedded in the belt body and extends in the longitudinal direction of the belt body.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: April 17, 2001
    Assignee: Tsubakimoto Chain Co.
    Inventor: Norihisa Fujita
  • Patent number: 6216852
    Abstract: An elongatable conveyor belt capable of traversing horizontal curves during its conveying run while still allowing for retention of the material to be conveyed thereon, the conveying belt being made of a stretchable or elongatable elastomeric material and including an upper layer of transverse reinforcing cords and a substantially heavier lower layer of transverse reinforcing cords disposed at opposing angles relative to the transverse axis of the conveyor belt. The belt also includes an internal stretch limiter such as an angularly woven fabric in the central region of the belt.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: April 17, 2001
    Assignee: Joy MM Delaware, Inc.
    Inventor: Joseph S. David
  • Patent number: 6186315
    Abstract: The perforated bottom wall of a suction chamber in the tobacco stream gathering and transporting apparatus of a cigarette rod making machine is designed to guide and support a file of discrete apertured inserts which have undersides serving as abutments for the lower reach of an endless foraminous tobacco stream gathering and advancing belt. Portions of the inserts can be inserted into or removed from one or more grooves provided in the bottom wall and extending longitudinally of a channel which is open from below and has a top wall constituted by the lower reach of the belt as well as by the file of inserts. At least a portion of each insert can be made of a strongly wear-resistant material.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: February 13, 2001
    Assignee: Hauni Maschinenbau AG
    Inventor: Clemens Schmick
  • Patent number: 6161684
    Abstract: A flexible conveyor belt having layers of oppositely extending cord members which abut each other at the lateral centerline of the conveyor belt. The angle of the cord members in each successive layer may be opposed to that of the previous layer. The conveyor belt includes an elastomeric body having spaced apart edge portions and a top and bottom surface. An internal stretch limiter, such as an angularly woven fabric, is disposed in the central region of the belt along the lateral centerline of the belt. Because the angle of the cord members in each successive layer are opposed to each other, the belt is strengthened. Because the angled cord members abut each other along the lateral centerline, the sideways forces acting on the belt are negated.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: December 19, 2000
    Assignee: Joy MM Delaware, Inc.
    Inventor: Joseph S. David
  • Patent number: 6116411
    Abstract: The invention concerns a conveyor belt comprised of a load-carrying side and a backing side made of elastomer material as well as a traction support area made of steel cables or cords located between the load-carrying side and the backing side. In one variation, the backing side consists of an outer wearing coat which has a rebound resilience of at least 70% and of an intermediate layer between the traction support area and the wearing coat, where a reflector is present within the intermediate layer. In a further variation, the backing side consists of a wearing coat which also has a rebound resilience of at least 70%, with a reflector within the wearing coat, but without an intermediate layer. In both variations, the reflector is advantageously arranged in direct proximity to the traction support area, where the width of the reflector takes up a maximum of 80% of the entire width of the conveyor belt, at an essentially equal distance from the outer edges.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: September 12, 2000
    Assignee: Phoenix Aktiengesellschaft
    Inventors: Margit Reiner, Gernot Grosskreuz
  • Patent number: 6095321
    Abstract: A conveyor belt (5) for transport systems is described, containing an areal textile configuration based on predominantly synthetic yarns, characterized in that the conveyor belt has the form of an endless strip and the yarns extending in the running direction of the conveyor belt are elastic, the elastic yarns having a maximum tensile elongation of at least 60% and consisting at least 70 wt. %, referred to total yarn weight, of a thermoplastic, elastomer copolyether ester containing recurrent structural units of formulas I and II,--O--OC--Ar.sup.2 --CO--O--R.sup.4 -- (I)and--O--OC--Ar.sup.3 --CO--O--R.sup.5 -- (II),where Ar.sup.2 and Ar.sup.3 independently of each other represent bivalent aromatic radicals,R.sup.4 represents a bivalent aliphatic or cycloaliphatic radical, andR.sup.5 stands for the bivalent radical of a polyalkylene ether.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: August 1, 2000
    Assignee: Johns Manville International, Inc.
    Inventors: Peter Striegl, Achim Sohn
  • Patent number: 6092645
    Abstract: A conveyor belt intended for use as an endless conveyor path in a materials transporting system includes an upper ply, a load-absorbing intermediate ply, and a lower ply that provides wear protection against one or more belt supporting devices. The intermediate ply includes a load-absorbing fabric. The upper ply provides protection against wear by transported goods. The upper ply has at least one of sufficient softness and formfactor to take up shear forces acting in the belt, the shear forces being caused by a load exerted on the belt by the goods transported thereby upon retardation and acceleration of the belt and also by coaction of the belt with the belt supporting devices. The conveyor belt is an endless conveyor path for one or more paper rolls. The conveyor belt is positioned flush with a surrounding floor surface.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: July 25, 2000
    Inventor: Bertil Wahren
  • Patent number: 6039964
    Abstract: Germicidal composition for incorporation into polymeric materials molded to form germicidally protected conveyor components used for food handling. Germicidally protected conveyor components are also provided.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: March 21, 2000
    Assignee: Omni Manufacturing, Inc.
    Inventors: Mohan L. Sanduja, Carl Horowitz, Mohammed Kamruzzaman, Paul Thottathil, Earl A. Ramsey
  • Patent number: 6029801
    Abstract: The flexible conveyor belt is flat when at rest. It has internal reinforcement embedded in layers of elastomer material. The reinforcement comprises a first sheet of longitudinal cables that provide traction strength, a second sheet of transverse cables that provide transverse traction strength, and a stiffening layer having high resistance to transverse compression. The stiffening layer consists of several narrow strips lying in a common plane at rest, the strips are mutually adjacent and are separated by gaps of sufficient width to allow the conveyor belt to be folded between two rows of rollers in a conveyor.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: February 29, 2000
    Assignee: S.F.B.T. Societe Francaise de Bandes Transporteuses
    Inventors: Jean-Paul Odin, Jean-Paul Pelissou
  • Patent number: 6000532
    Abstract: The textile belt (1) is made of a textile material and is used for a screen, conveyor belt or the like. The belt has attached to loops at end edges of belt ends, helical coils (4) which can be intertwined with adjacent helical coils and held together by means of an insertion wire, an insertion pin or the like which can be inserted into the intertwined helical coils. The helical coil (4) is divided at each end edge into at least three portions, namely two narrow edge portions (7) and a central portion (3), and each helical coil portion is connected to loops at the belt end edges independently of the other portions.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: December 14, 1999
    Assignee: Huyck Austria GmbH
    Inventor: Gerhard Eckhardt
  • Patent number: 5979633
    Abstract: An automated conveyor sortation and item discharge system for conveying and discharging packages at high speeds. A conveyor assembly includes an elongate crowned conveyor belt which conveys parcels in a longitudinal direction defined across slider beds and across discharge stations. The parcels can take three different routes once they reach the discharge stations. They may be allowed to pass the discharge stations and continue to be conveyed by the crowned conveyor belt, or they can be selectively discharged off of the crowned conveyor belt and into discharge chutes located to either side of the substantially straight path of the crowned conveyor belt. Each of the discharge stations includes a selectively indexable fork member supporting a group of idling rollers. The parcels have sliding contact with the slider beds and "rolling contact" with the idler rollers. When a package is in the desired position, the fork member can be indexed to cause some of the rollers to move upwardly and inwardly.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: November 9, 1999
    Assignee: United Parcel Service of America Inc.
    Inventor: Henri Bonnet
  • Patent number: 5943951
    Abstract: Flexible press sleeve for a press roll for treating a web includes an inside surface including a longitudinal press area adapted to be pressurized with a press shoe by directing pressure radially outward, and a flexible section on at least one end of the press area having a greater flexibility than a flexibility of the press sleeve outside the flexible section, without causing a significant weakening of the press sleeve within the flexible section. A press shoe includes the press roll and a mating roll forming a press opening with the press roll. A method of treating a web includes draining a fibrous pulp web by using the press shoe.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: August 31, 1999
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Josef Muellner, Uwe Matuschczyk
  • Patent number: 5941369
    Abstract: In a food conveying resin belt in which its conveying face is formed with a resin layer, an antibacterial and antifungal agent composition containing bis-(2-pyridylthio-1-oxido)-zinc as its active ingredient is included in the resin layer. High antibacterial and antifungal effects can be obtained by bis-(2-pyridylthio-1-oxido)-zinc.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: August 24, 1999
    Assignees: Mitsiboshi BeltingLtd., Kishimoto Sangyo Co., Ltd
    Inventors: Hiroshi Katsura, Nobuo Miyano, Kazuhiro Mizuno, Takao Endo
  • Patent number: 5938007
    Abstract: A conveying belt has a core and a canvas layer attached to the core. The canvas layer has a first surface facing the core and a second surface facing oppositely to the first surface. The canvas layer has a thickness between the first and second surfaces. The canvas layer is treated with fluororesin so that the second surface is impregnated with fluororesin and only part of the thickness between the first and second surfaces is impregnated with fluororesin.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: August 17, 1999
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Kazutoshi Fujihiro, Yoshinori Furukawa, Hiroyuki Ito
  • Patent number: 5911307
    Abstract: A conveyor belt and a method of manufacturing are provided. The conveyor belt includes a flat belt, having a topside, a pulley side, a first outer edge and a second outer edge. The conveyor belt further includes a timing belt with timing teeth extending from the pulley side. The conveyor belt is used in a conveyor belt system including a drive roller having a gear portion shaped complementary to the timing teeth of the flat belt. The drive roller is arranged to engage with the pulley side of the flat belt. The conveyor belt system further includes a tail roller which also includes a gear portion shaped complementary to the timing teeth of the flat belt and arranged to engage with the pulley side of the flat belt.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: June 15, 1999
    Assignees: Burrel Leder Beltech, Inc., Subcon Products, Inc.
    Inventors: Klaus H. Kraft, Boaz Raam
  • Patent number: 5906269
    Abstract: A double-scrim belting (10) is described having a first woven scrim (12) and a spaced apart and substantially parallel second woven scrim (14) connected by staple fibers (16) consolidated together through entanglement and integrated with the scrims through entanglement, both entanglements being of the kind typically produced by needling. If desired, a non-woven web of staple fibers is needled to the outer surfaces of the scrims and the thusly formed belting is completely encapsulated in a matrix of elastomeric material (36). To further strengthen the connection between the scrims (12, 14), the scrims are additionally joined together by binder members (42) which extend in a direction of the thickness of the belting. If the belting is intended to be used to convey food grade products, preferably an antibacterial agent is incorporated into the elastomeric material to inhibit bacterial growth.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: May 25, 1999
    Assignee: Habasit Globe, Inc.
    Inventors: Florian S. Zabron, David K. Rice, Ernest E. Atkins
  • Patent number: 5895138
    Abstract: A conveyor belt includes a PET film as a core and an urethane layer formed on a surface of the PET film by screen-printing urethane beads containing ink. This conveyor belt is for use in a belt type photosensitive-material storage section of a photosensitive-material transport apparatus in order to absorb difference in processing capacities of a printing section and a developing section.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: April 20, 1999
    Assignee: Noritsu Koki Co., Ltd.
    Inventors: Hiroshi Oku, Keiji Morimoto, Mikio Inoue
  • Patent number: 5894918
    Abstract: An automated conveyor sortation and item discharge system for sorting items of varying sizes and weights to designated output destinations along a conveyor.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: April 20, 1999
    Assignee: United Parcel Service of America, Inc.
    Inventor: Henri Bonnet
  • Patent number: 5868639
    Abstract: Drive with a belt-driving wheel and a belt-motion deflector with a transmission member in the form of a belt wrapping around them in a continuous loop. The belt is in form-fit engagement with and is driven by at least the belt-driving wheel. Structures are distributed at least part-way along the belt and form fit matching structures on at least the belt-driving wheel. The belt is woven and the structures are applied to the belt in a separate step.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: February 9, 1999
    Assignee: Hormann KG Verkaufsgesellschaft
    Inventor: Thomas J. Hormann
  • Patent number: 5836440
    Abstract: A high speed, normally closed tubular belt conveyor system operable over long distances and through relatively short radius horizontal and vertical turns, is described. The belt conveyor is prestressed at fabrication to provide a normally closed tubular configuration. Profiled end pulleys are provided which open the belt for loading and unloading with minimum strain and distortion. A distributive drive system provides reduced longitudinal tensile stresses in the belt and facilitates high speed operation. A feeder-accelerator system loads granular-type material into the tubular belt at a rate and velocity which are conformed to the capacity and velocity of the belt.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: November 17, 1998
    Inventor: Alex Mindich
  • Patent number: 5779028
    Abstract: A belt with transverse rigidity is constructed so as to prevent the formation of cracks on the surface layer. Belt includes two pairs of sub-layers which provide transverse rigidity. The layers are staggered with respect to one another in order to allow the belt to be driven by a relatively small diameter drum.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: July 14, 1998
    Assignee: Dunlop-Enerka B.V.
    Inventor: Hans De Vries
  • Patent number: 5772848
    Abstract: A resin-impregnated endless belt for a long nip press or calender of the shoe type has a base fabric in the form of a multilayer braided structure wherein each of the constituent layers are connected to those adjacent thereto by at least one interlocking yarn to inhibit interlayer delamination. The base fabric is in the form of an endless loop, at least the inner surface of which is coated with a polymeric resin material, such as polyurethane. The polymeric resin material impregnates the structure of the base fabric, rendering it impermeable to oil and water.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: June 30, 1998
    Assignee: Albany International Corp.
    Inventor: William H. Dutt
  • Patent number: 5765679
    Abstract: Paper transport system for printing presses includes a drive roller, a deflection drum disposed in spaced relationship with the drive roller, and a conveyor belt extending around the drive roller and the deflection drum, the conveyor belt having first regions formed with engagement elements, as well as second and substantially smooth-surfaced regions, the drive roller and the deflection drum, respectively, being subdivided into axially separate, respective roller and drum segments rotatable independently of one another and surrounded by the first and the second regions of the conveyor belt, the conveyor belt being of such construction between the first regions and the second regions thereof that small relative movements are possible therebetween in a longitudinal direction of the conveyor belt.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: June 16, 1998
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Martin Greive
  • Patent number: 5766421
    Abstract: A press blanket in a pressing device intended for extracting water from a web in the press nip of a papermaking machine comprises an elastomeric matrix, in which the outer area, facing the web, is subjected to a thermal treatment in order to increase the wear-resistance. Although the elastomeric matrix thus consists of the same material throughout, the outer area, which is subjected to greater stresses, therefore exhibits increased wear-resistance. The press blanket is made in a single operation, by casting a hot-casting elastomeric matrix onto a cylindrical casting mold, while at the same time reinforcing threads are wound into the material. The press blanket is selectively thermally treated in order to achieve increased wear-resistance at the outer surface facing the web to a depth below the depth of grooves or bores on this outer surface.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: June 16, 1998
    Assignee: Voith Sulzer Papiermaschinen Gesellschaft mbH
    Inventor: Harald Aufrecht
  • Patent number: 5753085
    Abstract: A long nip press belt for a papermaking machine has a textile substrate impregnated and coated on at least one side with a polymeric resin material. The polymeric resin material is ground and buffed after being cured to provide the belt with a smooth surface and a uniform thickness. The textile substrate includes textile components (monofilaments, continuous fine filaments or staple fibers) having non-circular cross sections with a plurality of lobes. Such cross sections provide the textile components with a greater surface area than would be provided by components of equal denier having circular cross sections. As a consequence, the mechanical interlock and chemical bond or adhesion of the polymeric resin coating to the textile substrate are strengthened. In addition, the textile components having non-circular cross-sections with a plurality of lobes reduce the permeability of the textile substrate, so that polymeric resin material applied to one side may be prevented from flowing through to the other side.
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: May 19, 1998
    Assignee: Albany International Corp.
    Inventor: Keith FitzPatrick
  • Patent number: 5697491
    Abstract: The subject of the invention is a conveyor belt comprising an outer polyamide layer and an inner layer of a thermoplastic block polymer, intended to be used in particular in the food or agri-foodstuff industry.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: December 16, 1997
    Assignee: Elf Atochem S.A.
    Inventor: Patrick Alex
  • Patent number: 5685417
    Abstract: A conveying belt having a belt body with oppositely facing inner and outer surfaces and a width between laterally spaced sides. The belt body has a first layer, with the first layer being an elastomer with a first plurality of discrete fibers therein having lengths substantially less than the width of the body. The lengths of the fibers in a second plurality of fibers in the first plurality of fibers are randomly oriented and reside substantially in a single plane. The invention is also directed to a method of making the conveying belt.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: November 11, 1997
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Arata Hasegawa, Toshiaki Koga, Takahide Mizuno, Hidesuke Takashima, Yasunori Matsuo, Hiroshi Okawa
  • Patent number: 5667058
    Abstract: A powered belt turn (10) for conveying parcels, objects and the like through an arcuate path from an input conveyor to an output conveyor. The powered belt turn (10) comprises a frustoconically shaped conveyor belt (15) which is supported for rotation through an arcuate path about angularly displaced end rollers (56). The conveyor belt is selectively and preferentially stiffened by reinforcing stays adapted to the conveyor belt structure. A motor (74) is operatively attached to an end roller causing the end roller to rotate thereby rotating the conveyor belt. The conveyor belt is supported on a belt support plate (28) and maintained in engagement with the end rollers by a belt retainer. In a first embodiment, the belt retainer is a sheave belt retainer (12) comprising sheaves (96, 98) adapted to engage an inner edge (36) of the conveyor belt and to urge the conveyor belt into engagement with the end rollers.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: September 16, 1997
    Assignee: United Parcel Service of America, Inc.
    Inventor: Henri Bonnet
  • Patent number: 5645157
    Abstract: A flexible conveyor belt is provided which can run in a curved shape which elongates along a lower inner wall of a circular pipe, while being completely supported above the lower inner wall by pressurized air introduced into a space between the belt and the lower inner wall. In the case where the flexible conveyor belt is mainly made of rubber, a trough index T (JIS K6322) which is obtained as a ratio of a deflection amount F to a width x of the belt is equal to or greater than 0.35. More strictly, it is preferable to set the thickness y (mm) and the width x (mm) of the belt to satisfy the relationship of y.ltoreq.0.143+6.486.times.10.sup.-3 x+7.904.times.10.sup.-6 x.sup.2. In the case where the flexible conveyor belt is made mainly of a resin, the trough index is equal to or greater than 0.30. The conveyor belts have sufficient flexibility.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: July 8, 1997
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Kimikazu Kitano, Takao Kanda, Takao Henmi, Futoshi Makino, Junji Sato
  • Patent number: 5614267
    Abstract: A method and a product are provided for improving the resistance to abrasion of a load-carrying surface of a conveyor belt formed of a cord-reinforced elastomer material selected from the group consisting of natural and synthetic rubber, the belt being adapted for use for conveying particulate ore or other particulate material having abrasive properties. The method employed comprises cleaning the surface of the conveyor belt prior to coating the same with an abrasion resistant coating. The conveyor belt is characterized by a distribution of pores in the surface to be coated. A flexible coating of a polymer selected from the group consisting of polyolefins and polyester elastomers is flame sprayed in the molten state onto the conveyor belt surface using a flame spray torch. The flame of the torch is spaced from the conveyor surface to avoid contacting of the flame with the surface being coated.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: March 25, 1997
    Assignee: Eutectic Corporation
    Inventor: Marvin Howlett
  • Patent number: 5609243
    Abstract: A toothed belt having a body with a length, laterally spaced sides, an inside and an outside, and defining a plurality of teeth spaced in a lengthwise direction on one of the inside and the outside of the body. The body is defined at least in part by a rubber composition made up of at least an ethylene propylene diene monomer (EPDM) and a diene rubber. A cloth layer is provided on the teeth on the one of the inside and the outside of the body. The cloth layer is treated with a resorcin-formalin-latex solution.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: March 11, 1997
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Yoshihisa Fujita, Takahide Mizuno, Hiroyuki Nishio, Kuniharu Uto, Kazutoshi Ishida
  • Patent number: 5609242
    Abstract: A steel wire or cable conveyor belt with improved penetration and rip resistance is made by plying up a series of rubberized longitudinal steel cables or wires to give a core, placing a ply of rubberized woven fabric such as polyaramide or nylon over the core, such as a tire breaker ply or plies over the core, then a ply of rubberized closely placed, essentially in contact wire, preferably of heavy tire ply cable, such as an earth mover ply, cut to cover the core in transverse direction to allow the steel wire or cable to be positioned perpendicular over the longitudinal steel wire or cable, apply a cover stock ply over the transversely positioned short wire or cable. The underside of the longitudinal steel wire or cable core has a rubberized woven fabric positioned there beneath and a rubberized pulley ply beneath the woven fabric ply. The plied up belt is cured with pressure and heat to adhere the plies together and cure the rubber.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: March 11, 1997
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Thomas G. Hutchins, Herbert L. Terreau
  • Patent number: 5595284
    Abstract: A conveyor belt comprising an endless belt body and a plurality of reinforcing cords embedded in the endless belt body, the reinforcing cord having a triple twist structure using first twisting, secondary twisting, and final twisting, (1) the filaments in the organic fiber filament bundle being oriented at an angle within .+-.10.degree. to the cord axis of the reinforcing cord or (2) a core yarn being inserted into the core of the twist structure of the reinforcing cord.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: January 21, 1997
    Assignees: The Yokohama Rubber Co. Ltd., Tokyo Rope Mfg. Co., Ltd.
    Inventors: Shuji Takahashi, Kazuhito Yanadori, Yoshiyuki Yamamoto, Yoichi Shyuto, Takayuki Eifuku
  • Patent number: 5558207
    Abstract: A belting having synthetic polymeric weft yarns that are associated with warp yarns of a natural fiber, is described. The belting can be woven to the broadest width allowable by a loom and then cut to a desired width. The cutting device is heated to simultaneously melt the several weft yarns which upon cooling fuse to form a sealed lateral edge that prevents the belting from fraying and unraveling at the fused edge during use. The broad cloth can also be cut to size and then the severed lateral edges is melted using a fusing device.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: September 24, 1996
    Assignee: Globe International, Inc.
    Inventors: Florian S. Zabron, Miles S. Rothman, Walter M. Kazial
  • Patent number: 5543015
    Abstract: The grooves of a grooved press belt are formed with an improved configuration which reduces groove closure under pressure and which reduces cracking and tearing of the belt. The improved groove configuration consists of a curved bottom and two upwardly diverging side walls. In a first embodiment the bottom wall is semi-circular and has a diameter which is equal to about one half of the width of the groove opening. The upwardly diverging side walls preferably include radiused upper edges. The side walls preferably have an angle of divergence between about five degrees and about fifteen degrees from a vertical plane. In a second embodiment, the bottom of the groove is substantially flat, and the bottom corners are radiused to provide a smooth transition between the flat bottom and the upwardly diverging side walls.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: August 6, 1996
    Assignee: Tamfelt Corp.
    Inventor: Olli A. Jermo
  • Patent number: 5525194
    Abstract: A press belt in the form of an endless loop includes crosswise and lengthwise reinforcing fibers. The crosswise reinforcing fibers are positioned adjacent to the outside surface of the belt and the lengthwise reinforcing fibers are positioned adjacent to the inside surface of the belt. The fibers are laid inside a casting cylinder and an elastomeric material is cast onto the fibers while the casting cylinder is rotating. The crosswise fibers are laid into the casting cylinder first so that they are adjacent to the outer surface of the belt and then the lengthwise fibers are laid over the crosswise fibers.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: June 11, 1996
    Assignee: Tamfelt Corp.
    Inventor: Olli A. Jermo
  • Patent number: 5518854
    Abstract: A method of fabricating a cylindrical device comprising having at least one distinct outer layer comprising providing a preformed rigid cylindrical support drum having a predetermined outer circumference, a first end and a second end, providing a flexible belt having an inner circumference at least about 0.05 percent smaller than the outer circumference of the support drum, circumferentially expanding the belt with a flowing fluid under pressure until the circumference of the inner surface of the belt adjacent the first end is stretched to a new dimension at least about 0.
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: May 21, 1996
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, William G. Herbert, William W. Limburg, Satchidanand Mishra, Richard L. Post, Donald C. Von Hoene, Geoffrey M. T. Foley, Abraham Cherian
  • Patent number: 5495935
    Abstract: A double-scrim belting (10) is described having a first woven scrim (12) and a spaced apart and substantially parallel second woven scrim (14) connected by staple fibers (18) consolidated together through entanglement and integrated with the scrims through entanglement, both entanglements being of the kind typically produced by needling. If desired, a non-woven web of staple fibers is needled to the outer surfaces of the scrims and the thusly formed belting is completely encapsulated in a matrix of elastomeric material 36. If the belting is intended to be used to convey food grade products, preferably an antibacterial agent is incorporated into the elastomeric material to inhibit bacterial growth.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: March 5, 1996
    Assignee: Globe International Inc.
    Inventors: Florian S. Zabron, David K. Rice, Ernest E. Atkins
  • Patent number: 5460261
    Abstract: A device for transporting materials along supporting rollers including a conveyor belt extending in a longitudinal direction. The device has two spaced longitudinal edges and a tensile fabric layer embedded within the conveyor belt made of a textile, a cord fabric or a synthetic cord fabric. The supports extend in the longitudinal direction, and the conveyor belt is adapted for being rolled into a tubular belt, wherein the two longitudinal edges overlap each other and are supported by the supporting rollers. Stiff textile reinforcements are embedded within the conveyor belt on a side of the fabric layer facing the support rollers. The textile reinforcements are oriented transverse to the longitudinal direction.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: October 24, 1995
    Assignee: Phoenix Aktiengesellschaft
    Inventors: Bernd Kusel, Karl-Heinz Elvers, Christian Heidelmann, Hasso Tonn
  • Patent number: 5422165
    Abstract: Belts used in agricultural applications and particularly in round, hay balers have inherent problems created by their usual process of manufacture. This process involves cutting a large processed sheet of elastomeric into relatively narrow strips which form the core of the belts. The belt disclosed herein utilizes a wrap of fabric affixed around each longitudinal edge of the belt core. This wrapped belt core is then further processed to create belts with improved longevity and performance characteristics.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: June 6, 1995
    Assignee: Morrison Company, Inc.
    Inventor: Dale B. Arnold
  • Patent number: 5421450
    Abstract: The present invention provides a heat-resistant, laminated conveyer belt comprising a reinforcing layer obtained by impregnating fluoroplastic into a heat-resistant fiber base cloth, drying and sintering the base cloth and a wear-resistant layer, formed on the reinforcing layer, obtained by impregnating fluoroplastic into a base cloth formed by weaving heat-resistant fiber in the form of a knit weave, drying and sintering the base cloth, and its manufacturing method.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: June 6, 1995
    Assignee: Chukoh Chemical Industries, Ltd.
    Inventors: Sumio Kitagawa, Masanori Ishibashi, Tomomi Haraguchi, Yoshiro Nogami
  • Patent number: 5383828
    Abstract: A treadmill (10) having a belt (12) and deck (14) with a relatively long, useful lifetime is disclosed. The belt of this assembly has a tread layer (54) formed of PVC plastic or other material that serves as the layer of the belt upon which a person actually steps, and a fabric layer (62). The fabric layer has weft threads (64) that extend laterally across the belt and that are substantially embedded in the plastic material and warp threads (66) that extend longitudinally along the belt that have exposed sections that extend outside of the plastic material. The fabric layer is woven so that the exposed sections of the warp threads are equal to at least 50% of their overall length. The deck of this treadmill is formed with a plywood substrate (70) and a wax-embedded hardboard (72). The substrate provides structural support for the hardboard and the persons using this treadmill. The hardboard serves as the surface along which the belt rides when a person steps on the treadmill.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: January 24, 1995
    Assignee: Precor Incorporated
    Inventors: Mark D. Sands, Daniel A. Schwandt, Soddy Tsang, Wes A. Williams
  • Patent number: 5370384
    Abstract: A sheet transport path system for transporting reproduction sheets along an elongated sheet transport path in a multibin sorter or mailbox system is provided by elongated moving belts having a high friction sheet engaging outside belt surface and an inside belt surface driven by belt drive rollers, and a belt backing system for supporting the inside of the belt flight. A low friction endless band centrally of the inside belt surface is engaged by the belt backing system. The belt backing system is an elongated fixed skid plate system narrower than the low friction endless band, and sliding thereagainst. High friction areas on the inside belt surface on opposite sides of this low friction endless band engage the belt drive roller for non-slip driving of the belt. The belt drive roller may, if desired, have a reduced diameter central groove so as to insure only engaging these outer edge areas of the inside surface of the belt if a thick inner belt surface or thick separate inner belt is utilized.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: December 6, 1994
    Assignee: Xerox Corporation
    Inventor: Robert F. Romanowski