And Additional Coating, Layer, Or Reinforcement Of Diverse Kind Of Material Patents (Class 474/268)
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Patent number: 5230667Abstract: An aramid fiber cord for use as a component in a power transmission belt, which aramid fiber cord has a plurality of aramid fiber filaments of 300 to 3100 denier adhesively treated and formed into a strand with a primary twist factor (Y) in a range of -1 to 1. A plurality of the strands are formed into the cord with a finishing twist factor (X) in a range of 1 to 4. The primary twist factor (Y) and finishing twist factor (X) satisfy the following equations: Y is .gtoreq. to -0.6X+1.3 and Y is .gtoreq. to -1.5x+5.0.Type: GrantFiled: May 7, 1992Date of Patent: July 27, 1993Assignee: Mitsuboshi Belting Ltd.Inventors: Masayoshi Nakajima, Takashi Kinoshita
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Patent number: 5211609Abstract: An elastomeric drive belt having cable reinforcement wherein lateral forces generated by the various layers of cables while the drive belt is in use are neutralized to prevent tracking problems.Type: GrantFiled: February 6, 1992Date of Patent: May 18, 1993Assignee: The Goodyear Tire & Rubber CompanyInventor: Edwin L. Haines
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Patent number: 5201689Abstract: Stiff cords especially useful for reinforcing V-belts are made from yarns formed of extruded filaments. Almost all of the filaments have a core and a complete sheath. The proportion of sheathed filaments, A in percent to all of the sheathed filaments in the yarn, in which the proportion of the sheath in each sheathed filament is (M.+-.0.1) percent of the total volume of the sheathed filament, simultaneously satisfies the conditions A.ltoreq.100; M.gtoreq.0.5; A.gtoreq.30+(0.1 M).sup.8. The sheath is formed of a polymer having a melting point at least 10.degree. C. below the melting point of the polymer forming the core. One such sheathed filament has a core formed of polyethylene terephalate and a sheath formed of a copolymer of polyethylene terephalate and sulfoisophthalic acid.Type: GrantFiled: November 5, 1991Date of Patent: April 13, 1993Assignee: Akzo N.V.Inventors: Franciscus A. T. Lijten, Gerrit Ruttenberg
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Patent number: 5197928Abstract: A power transmission belt having a belt body defining laterally spaced, oppositely facing flank surfaces for engagement with a pulley and at least one fiber within the belt body and extending in a lateral direction. The fiber has a cross-sectional area taken transversely of its length and a surface exposed at at least one of the flank surfaces. The exposed fiber surface is flared to have an area that is greater than the cross-sectional area of the fiber.Type: GrantFiled: November 19, 1990Date of Patent: March 30, 1993Assignee: Mitsuboshi Belting Ltd.Inventors: Kyoichi Mishima, Toshimi Kumazaki, Masahiko Kawashima
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Patent number: 5181890Abstract: An elastic driving belt stretched between two pulleys of fixed distance between centers and having a predetermined starting tensioning, undergoes a permanent elongation such that the residual elastic elongation has a percent value included between the detectable percent contraction values along the inner edge of the belt itself when the latter is respectively wound according to two predetermined bending lines, the residual elastic elongation being detected by measuring the residual tensioning value on the belt when the permanent elongation has occurred, and reading the elongation value corresponding to the residual tensioning value on a load-elongation graph relating to the belt.Type: GrantFiled: December 14, 1990Date of Patent: January 26, 1993Assignee: Pirelli Trasmissioni Industriali S.p.A.Inventor: Edoardo Robecchi
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Patent number: 5178586Abstract: A canvas cover for placement over an exposed surface of a power transmission belt having a length and width, which canvas cover consists of a yarn defining a weft for extension in the longitudinal direction with respect to a belt on which the canvas cover is to be placed, and a twisted yarn defining a warp for extension in the widthwise direction with respect to a belt on which the canvas cover is to be placed. The warp yarn is preferably made up of from 3-15 twisted mono-filaments each of 10-50 denier with a total denier of 210d.Type: GrantFiled: July 10, 1991Date of Patent: January 12, 1993Assignee: Mitsuboshi Belting Ltd.Inventors: Takahide Mizuno, Nobutaka Osako, Takeshi Murakami
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Patent number: 5160301Abstract: A rubber structure has a fiber reinforcement embedded therein. The reinforcement is constructed of cylindrically braided cords braided by yarns, where the number of yarns is an even number in a range of four up to eight. Each cylindrically braided cord has a hollow portion extending in the longitudinal direction at the center thereof. The hollow portion has a small diameter.Type: GrantFiled: May 9, 1991Date of Patent: November 3, 1992Assignee: Bando Chemical Industries, Ltd.Inventors: Yasuyuki Nakanishi, Hiroshi Matsuoka
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Patent number: 5131215Abstract: An endless belt construction comprising a single endless belt composed of synthetic resin material molded integrally with a reinforcing member in a single length passed through the resin material in a plurality of adjacent loops, such loops being spaced from one another.Type: GrantFiled: October 30, 1990Date of Patent: July 21, 1992Inventor: Geoffrey A. Williames
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Patent number: 5129866Abstract: The endless drive belt is produced by winding a pre-formed load-carrying member comprising a cord embedded in a solid but softenable elastic material along and around a surface of an endless compression member belt also comprising a solid but softenable elastic material, thereby forming layer comprising a plurality of turns, and by simultaneously causing said turns to become intimately bonded to said surface. Said bonding is achieved by applying mutual pressure between said turns and said surface during winding and by selectively softening the surface layers of both said load-carrying member and said endless compression member belt which are to come into contact with each other, just prior to coming into contact with each other. The material of said surface layers is allowed to fuse. Said turns of said load-carrying member are further allowed to be partially impressed in said surface of said endless compression member belt.Type: GrantFiled: November 20, 1991Date of Patent: July 14, 1992Assignee: Fenrir AGInventors: Jonathan Schanin, Shmuel Harel
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Patent number: 5125875Abstract: A power tansmission belt having a body portion comprising at least one strip of belt body material helically wound at an incline with respect to the surfaces of the finished belt. The belt material is wound against itself to form generally inclined and successive plies of body material. Tensile material or load carrying cord is helically wound between the successive plies of the body material. The method and apparatus for simultaneously winding the belt body material and the load carrying cord is disclosed.Type: GrantFiled: October 18, 1990Date of Patent: June 30, 1992Assignee: The Gates Rubber CompanyInventors: Jerome M. Daugherty, Clifford W. Wink
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Patent number: 5123881Abstract: A flexible endless belt for full-track vehicles comprises a belt body made of an elastomeric material, and a longitudinal pull-resistant carrier embedded therein. The soil-engaging contact surface of the belt body is provided with projections while the inner surface flat for contacting the cylindrical mantle surface of rollers of the drive assembly. For the form-locking drive of such a belt and for achieving a vibration and noise reduced drive, the inner surface is provided with bending-resistant transverse stays that are embedded in the belt body and end flush with the edges of the inner surface of the belt. The inner surface is provided with longitudinally extending recesses before and after the transverse stays for engaging teeth provided at the drive roller.Type: GrantFiled: July 12, 1991Date of Patent: June 23, 1992Assignees: Continental Aktiengesellschaft, Intertractor Viehmann GmBH & Co.Inventors: Jurgen Brautigam, Heinz Lause
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Patent number: 5120281Abstract: A power transmisison belt having: at least one longitudinally extending rib having laterally spaced, first and second oppositely facing surfaces for reception within a complementary pulley groove; at least one fiber embedded in the one rib and having a length extending transversely to the longitudinal extent of the one rib, with the fiber having a portion projecting outwardly from the one rib beyond one of the first and second surfaces; and a noise suppressing material applied to the one of the first and second surfaces and a portion of the one fiber to inhibit noise generation between a power transmission belt and a cooperating pulley resulting from relative movement of one against the other.Type: GrantFiled: April 26, 1991Date of Patent: June 9, 1992Assignee: Mitsubishi Belting Ltd.Inventors: Kyoichi Mishima, Toshimi Kumazaki, Masahiko Kawashima
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Patent number: 5041063Abstract: A toothed belt where the crown surfaces of its teeth are to be disposed on the bases of gear wheel grooves is provided. In order to achieve a dampened, low-noise running-up of the toothed belt upon the gear wheel, as well as to achieve a free-of-play filling of the gear wheel grooves via the belt teeth in the direction of rotation as required for a reversible belt drive, embedded in the crown surface of each tooth belt is a crown piece made of a material that is elastically softer than the belt material. Viewed in the longitudinal cross-section of the belt, the crown piece extends essentially over the entire length of the crown surface of the belt tooth and protrudes from the crown surface in such a way that as the tooth runs up on the gear wheel, first the part of the curved outer side that protrudes the most strikes the base of the gear wheel groove, and subsequently this outer side is pressed flat against the groove by the belt tension.Type: GrantFiled: September 21, 1990Date of Patent: August 20, 1991Assignee: Breco kunststoffverarbeitungs-GmbH & Co. KGInventors: Rudolf Breher, Rudi Kolling
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Patent number: 5019019Abstract: A pulley comprising a hub (12) having a substantially cylindrical outer face and a pair of rim halves (11a and 11b) adapted to be mounted to the hub and having opposed inner axial faces which are divergent with respect to each other, a separable pulley tire (13) having a cross-sectional configuration corresponding substantially to the space defined between the hub and the inner axial faces of the rimmed halves and having an inner circumference where by the tire is snugly received on the hub and is clampingly received between the rim halves said tire having a reinforcing ring (15) located at or adjacent the inner circumference of the tire, the outer circumference of the tire being formed with a peripheral groove (14) for accommodation of a rope or cable.Type: GrantFiled: February 28, 1989Date of Patent: May 28, 1991Inventor: Harry A. T. Jones
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Patent number: 5015220Abstract: An endless work fabric having a loop seam construction and a method of manufacture thereof is disclosed, wherein the fabric is used as a papermaker felt, a papermaker dryer fabric, a forming wire, or filter fabric. An endless belt formed of a preselected material preferably having longitudinally extending yarns included therein is collapsed upon itself to form folded ends that are stripped to expose end loops. The loops as formed in the ends of the fabric are intermeshed to define a transversely extending channel through which a pintle member is extended for joining the two ends of the folded fabric to define the endless work fabric. An alternate construction includes forming the fabric of nonwoven materials and interconnecting the ends of the collapsed fabric by a hinge-like construction through which a pintle member is extended.Type: GrantFiled: March 19, 1990Date of Patent: May 14, 1991Assignee: Tamfelt, Inc.Inventors: Robert W. Legge, William O. Hocking, Jr.
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Patent number: 4994000Abstract: A power transmission belt of the trapdezoidal type comprising a body made of an elastomer matrix having a layer of cord embedded therein, the cord being made of synthetic or natural textile material and serving as a traction strength member, the belt also including reinforcing members based on fibers extending substantially transversely relative to the belt. The reinforcing members (28) are rigid composite pins made of glass fibers coated in epoxy resin and they are disposed in the outside or back portion only of the belt, which portion is delimited by two side faces (22, 23) that are set back to avoid any contact between the reinforcing members and the cheeks (12, 13) of pulleys (11) with which the belt may cooperate.Type: GrantFiled: November 7, 1989Date of Patent: February 19, 1991Assignee: HutchinsonInventors: Jean-Michel Simon, Victor Zarife
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Patent number: 4934992Abstract: A power transmission toothed trapezoidal belt comprising a body constituted by an elastomer matrix having a layer of metal cables or of natural or synthetic material textile cords embedded therein for the purpose of providing strength in traction, and also having reinforcing members embedded therein extending substantially transversely relative to the belt, each reinforcing member having a cross-section which is substantially "open" in shape, being somewhat trough- or gutter-shaped, wherein said reinforcing members (21; 32; 33; 35; 36; 41; 51) are individual reinforcing members which are independent from one another, and wherein said reinforcing members are received in the gaps (20) between the teeth of the belt.Type: GrantFiled: December 7, 1988Date of Patent: June 19, 1990Assignee: HutchinsonInventors: Jean-Michel Simon, Victor Zarife
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Patent number: 4931030Abstract: An elastically extensible flexible belt is provided which comprises an annular body of elastomeric material in which is embedded a plurality of elongated elements arranged along a surface corresponding to the position of the neutral axis of the belt. The belt is characterized in that each elongated element, at 1/10 of its ultimate tensile stress, has an elongation value able to balance a shrinkage value of the innermost surface of the belt, ranging between two limit values .epsilon..sub.1 .epsilon..sub.2 corresponding to the bending of the belt according to two pre-established curvatures. The first curvature is represented by a circumference whose radius r.sub.1 is equal to 60% of the radius R of the circumferential development of the annular body in correspondence of the elongated elements and the second curvature is represented by a circumference whose radius r.sub.2 corresponds to 35% of the radius R of the circumferential development of the annular body.Type: GrantFiled: April 27, 1989Date of Patent: June 5, 1990Assignee: Pirelli Transmissioni Industriali S.p.A.Inventor: Edoardo Robecchi
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Patent number: 4913690Abstract: A belt formed of elastomeric material is provided for transmission of forces in cooperation with at least two pulleys. The belt is formed by an outer part under traction, an inner part under compression and an intermediate part interposed between the inner and outer parts. The inner part includes at least two lateral, opposite and convergent surfaces suitable for transmitting frictional forces with the corresponding surfaces of the pulleys. The belt includes a plurality of transversely directed alternating protuerances and cavities in the inner part. The sequence of transversal cavities and protuberances define an undulated profile. The ratio between the pitch (p) and the depth (h) of the transversal cavities is between 8 and 20, and the ratio between the radius of curvature (r) of the transversal cavities and the depth (h) of the cavities is between 3 and 6.Type: GrantFiled: June 16, 1989Date of Patent: April 3, 1990Assignee: Pirelli Trasmissioni Industriali S.p.A.Inventors: Tommaso Di Giacomo, Domenico Arces
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Patent number: 4906227Abstract: An endless power transmission belt is set forth for use in cooperation with a plurality of pulleys in a typical automotive environment. The belt is of a trapezoidal cross-sectional configuration including reinforcing cords running longitudinally of the axis of the belt. Further, reinforcing clips are oriented angularly overlying the top surface of the belt with prongs imbedded within the belt for securement of the clips therewithin. The clips assist in maintaining the structural integrity of the belt during use by reinforcing the top tension portion of the belt. Further, the clips are oriented at angles other than ninety degrees and in a further embodiment, are interlaced oriented orthogonally relative to one another across the top surface of the belt.Type: GrantFiled: February 16, 1989Date of Patent: March 6, 1990Inventor: Dale F. Suesse
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Patent number: 4883448Abstract: A belt including a main body formed in to an endless configuration with a plurality of substantially equally pitched approximately round shafts embedded in the main body. Also included are a plurality of wires engaged along nearly an entire lengthwise portion of each of the shafts. The wires can be interlaced with the shafts or wound on the shafts and the wires cna be a twisted thread of organic fiber, inorganic fiber, or glass fiber. The main body can be made of rubber of high rigity having a longitudinal elastic coefficient of approximately 10-140 kg/mm.sup.2. The main body could also be made of refractory synthetic resin having a longitudinal elastic coefficient of 5-150 kg/mm.sup.2. Each shaft can be of substantially the same diameter along its entire length.Type: GrantFiled: July 8, 1988Date of Patent: November 28, 1989Assignee: Aisin Seiki Kabushiki KaishaInventors: Toshimitsu Kobayashi, Akio Inagaki, Yasuhiro Kobayashi, Masanori Mori, Takashi Sakakibara
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Patent number: 4861323Abstract: A belt including a main body formed into an endless configuration with a plurality of substantially equally pitched approximately round shafts embedded in the main body. Also included are a plurality of wires engaged along nearly an entire lengthwise portion of each of the shafts. The wires can be interlaced with the shafts or wound on the shafts and the wires can be a twisted thread of organic fiber, inorganic fiber, or glass fiber. The main body can be made of rubber of high rigidity having a longitudinal elastic coefficient of approximately 10-140 kg/mm.sup.2. The main body could also be made of refractory synthetic resin having a longitudinal elastic coefficient of 5-150 kg/mm.sup.2. Each shaft can be of substantially the same diameter along its entire length.Type: GrantFiled: January 6, 1989Date of Patent: August 29, 1989Assignee: Aisin Seiki Kabushiki KaishaInventors: Toshimitsu Kobayashi, Akio Inagaki, Yasuhiro Kobayashi, Masanori Mori, Takashi Sakakibara
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Patent number: 4850943Abstract: A toothed belt is provided which is made of an elastomeric material or the like and which comprises a plurality of teeth, alternating with spaces, covered with at least one layer of textile material. The elastomeric material forming the top of at least one tooth and the relative covering textile material layer are shaped to define at least one depression limited by two lateral protuberances. The seam joining the textile layer end portions is situated along the depression so that no rubbing can take place between the seam and a surface external to the belt. Preferably, the depression botton is formed to have a curvilinear shape and the ratio between the thickness "s" of the covering textile material layer and the bending radius "r" of the depression bottom ranges between 0.1 and 10.0.Type: GrantFiled: September 28, 1988Date of Patent: July 25, 1989Assignee: Pirelli Transmissioni Industriali S.p.A.Inventors: Tommaso DiGiacomo, Carlo Fiordaliso
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Patent number: 4846771Abstract: A cogged belt (1) having an elastic base of which accommodates a carrying element (4) and an element (6) reinforcing cogs (5) of the belt (1). The reinforcing element (6) has the form of a corrugated band corrugations (7) of which are arranged inside the cogs (5) of the belt (1). The carrying element (4) is continuous through the length of the belt (1), whereas the reinforcing element (6) and its corrugations (7) have a width substantially the same as that of the carrying element (4) equal to the length of the cog (5) of the belt. The reinforcing element (6) is arranged at one side of the carrying element (4).Type: GrantFiled: February 25, 1987Date of Patent: July 11, 1989Inventors: Gennady G. Kozachevsky, Valery V. Guskov, Vladimir P. Boikov, Oleg I. Molodan, Svetlana I. Sizova, Jury N. Gorodnichev, Tamara P. Nazarenko
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Patent number: 4838843Abstract: A toothed power transmission belt having a high modulus polyurethane body, an aramid type -II tensile member occupying up to about 88 percent of the belt width, and a wear-resistant fabric disposed along the belt inner surface at the tooth flanks.Type: GrantFiled: April 16, 1982Date of Patent: June 13, 1989Assignee: The Gates Rubber CompanyInventor: William L. Westhoff
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Patent number: 4832673Abstract: A toothed belt construction having a tooth cover fabric providing extended useful life of the belt. The cover fabric includes waft fibers extending longitudinally of the belt, having a toughness of at least approximately 30 where the toughness is a function of the square root of the elongation of the weft yarns at break and the strength of the west yarns at break in units of grams per denier. The elongation at break is preferably in the range of approximately 20 to 45%. The strength of the weft yarns at break is preferably at least approximately 6.0 grams per densier. Woolly processed yarns of polyamide fibers have been found to be particularly advantageous in the disclosed construction.Type: GrantFiled: September 1, 1987Date of Patent: May 23, 1989Assignee: Mitsuboshi Belting, Ltd.Inventors: Takaji Nagai, Nobutaka Ohsako
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Patent number: 4826472Abstract: A toothed belt having a woven fabric adhesive-bonded to the surface thereof which is adapted to be brought into contact with pulley, wherein, out of the yarns forming the woven fabric, the yarns to be located in the longitudinal direction of the belt comprise crimped yarns obtained by subjecting to crimping nylon multi-filament yarns having a relative viscosity of about 2.5 to sulphuric acid, a filament fineness of 2.5 d or under, and a filament strength of 7.5 g/d or over. This toothed belt is excellent in wear resistance on the surface thereof which is adapted to be brought into contact with pulleys and does not suffer from cracking.Type: GrantFiled: February 19, 1988Date of Patent: May 2, 1989Assignee: Ashimori Kogyo Kabushiki KaishaInventors: Akihiro Sato, Mitsuho Yamada, Shigehiro Isshiki
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Patent number: 4822324Abstract: In an endless power transmission belt including a matrix made from an elastomer material, advantageously of the rubber type, and a longitudinal reinforcement of twisted cords, the reinforcement is chosen, with respect to its physical tension characteristics and its positioning in the matrix, so that the belt has an overall extension modulus sufficiently low so that it makes it possible to fit the belt, by exerting a tractive force, on the pulleys with which it cooperates and yet keeps a minimum appropriate tension after positioning so as to ensure satisfactory operation of the transmission which it equips.Type: GrantFiled: January 21, 1988Date of Patent: April 18, 1989Assignee: HutchinsonInventor: Pierre Georget
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Patent number: 4820248Abstract: A belt for use in coupling the driving and driven pulleys of a continuously variable transmission includes a rubber-like resilient matrix in which are embedded longitudinal cables for carrying the torque and a metallic grid member for providing contact with the sidewalls of the pulleys. The grid member includes a main sheet portion embedded in the matrix and having a plurality of transverse slots arranged in two interdigital sets for defining two sets of flexible fingers on opposite sides of the sheet portion that extend vertically included to form surfaces for contacting the sidewalls of the pulleys.Type: GrantFiled: March 16, 1988Date of Patent: April 11, 1989Assignee: Neuberne H. Brown, Jr.Inventor: Frederick L. Parsons
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Patent number: 4813919Abstract: A toothed belt and method of manufacturing the same wherein the opposed ends of a tooth covering fabric are stitched with an interposed rigid element disposed within the stitching. The rigid element is used to accurately locate the joint of the fabric with respect to the tooth molding groove, at least during a subsequent tensile cord winding step which normally tends to displace the fabic joint. The joint may be accurately located as desired with respect to the mandrel or mold. Different structure for holding the ends of the rigid element are disclosed. The rigid element may be removed prior to the rubber vulcanization step during which step the wrapped tensile cord effectively maintains the fabric joint at the desired location.Type: GrantFiled: September 9, 1987Date of Patent: March 21, 1989Assignee: Mitsuboshi Belting, Ltd.Inventors: Sokichi Nosaka, Takeshi Hamura, Takaji Nagai
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Patent number: 4799919Abstract: A cogged belt comprising an elastic base (3) which incorporates a carrying element and a reinforcing element which reinforces; cogs (1) of the belt and is in the form of a corrugated strip. Corrugations (5) of the strip are imedded in the cogs (1). The reinforcing element (2) has a width equal to the width of the cog (1), whereas the carrying element is formed by locks (4) disposed in the zone of the corrugations (5) to powerlock their bases and portions (6) of the reinforcing element (2) interposed between the corrugations (5).Type: GrantFiled: May 4, 1987Date of Patent: January 24, 1989Inventors: Gennady G. Kozachevsky, Valery V. Guskov, Vladimir P. Boikov, Oleg I. Molodan, Svetlana I. Sizova
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Patent number: 4790799Abstract: A belt and pulley construction for use in a continuously variable power transmission arrangement. In one embodiment the conical working surfaces of the drive pulleys and the driven pulleys are comprised of removable segments formed of relatively erodable friction modifying material so that the conical pulley surfaces will wear away before the drive belt. In another embodiment the drive belt, whether comprised of a rubber compound or of metal, contains wear faces or pads which contain friction modifying material. Traction between the belt and the pulleys can thus be controlled by members other than solely through the tension of the drive belt.Type: GrantFiled: May 12, 1987Date of Patent: December 13, 1988Assignee: Manville CorporationInventor: Thomas H. Sadler
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Patent number: 4786273Abstract: A cogged belt comprising an elastic base (1) which incorporates a carrying element in the form of a strip (2) with crimped lugs (4), and inserts (6) for reinforcing the cogs of the belt, and which are (3) connected to the strip (2) by these lugs (4). The lugs (4) are arranged at the outer opposite sides of the strip (2) laterally of the cogs (3). The lugs (4) are interconnected by a pin (5) having an insert (6) mounted thereon.Type: GrantFiled: May 11, 1987Date of Patent: November 22, 1988Assignee: Belorussky Politekhnichesky InstitutInventors: Valery V. Guskov, Gennady G. Kozachevsky, Vladimir P. Boikov, Oleg I. Molodan, Svetlana I. Sizova, Petr P. Kasperovich
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Patent number: 4775357Abstract: A high capacity, toothed belt having an elastomeric body composed of a single elastomeric compound which includes from 2 to 30 parts of short fiber flock reinforcement. The flock must have a length to diameter (L/D) ratio less than 10:1.Type: GrantFiled: March 6, 1987Date of Patent: October 4, 1988Assignee: The Goodyear Tire & Rubber CompanyInventor: John C. Wolfe
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Patent number: 4773896Abstract: An endless power transmission V belt is provided including a longitudinal reinforcement member formed by at least one member resistant to a tensile force such as a cable, made from a material chosen from metal, glass fibers or the like having a high tensile strength, transverse elements made from metal or another material having compression strength and an elastomer mass which integrally assembles the transverse elements together and with the longitudinal reinforcement member. The latter is blocked upright at least one transverse element by a nipping effect between said element or a part thereof and a piece cooperating therewith, such as a bar or the like, which is firmly secured thereto by appropriate means such as spot welding on the contact zones between said element and said piece, exclusively.Type: GrantFiled: April 6, 1987Date of Patent: September 27, 1988Assignee: HutchinsonInventors: Christian Bouteiller, Andre Cheymol
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Patent number: 4767389Abstract: A driving belt has a textile supporting element composed of multi-functional threads or yarns which contain plastic fibers of high breaking strength and heat-resistant natural fibers. The driving belt also contains an electrically conductive element. The supporting element is connected to a non-crosslinked plastic covering to form an asymmetric structure. The textile supporting element can be impregnated on the side facing away from the plastic covering. The electrically conductive element is either an electrically conductive filament in the multifunctional thread or yarn or an electrically conductive layer between the supporting element and the plastic covering. This asymmetric structure results in a favorable kinematic operating behavior and high efficiency, because the neutral bending plane of the belt comes to rest at a point very near the contact surface of an element to be driven.Type: GrantFiled: April 1, 1987Date of Patent: August 30, 1988Assignee: Habasit AGInventors: Fernand Habegger, Niklaus Polt, Kurt Grobli
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Patent number: 4741727Abstract: A power transmission V belt for being trained around driver and driven pulleys for transmitting power therebetween includes a loop-shaped metallic belt and a plurality of metallic V blocks mounted on the metallic belt successively in the longitudinal direction thereof. A a self-lubricating, heat-resistant, wear-resistant hard layer is coated on at least one of a radially inward surface and opposite side surfaces of the metallic belt, and radially outward surface and opposite side surfaces of the V blocks. The loop-shaped metallic belt comprises a stack of metallic members, and the self-lubricating, heat-resistant, wear-resistant hard layer is coated on at least one of confronting surfaces of superimposed ones of the metallic members.Type: GrantFiled: December 17, 1986Date of Patent: May 3, 1988Assignees: Honda Giken Kogyo Kabushiki Kaisha, Fukui Shinta Kabushiki KaishaInventors: Torao Hattori, Minoru Nishimura, Masaki Gotoh
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Patent number: 4741726Abstract: A trapezoidal cross section cog belt comprising a rubber body having longitudinally spaced inner cogs, a longitudinally extending tension resisting girdle and transversally extending reinforcement members in said cogs, said members having a bandular open shape adapted to undergo deformation in the longitudinal direction of the belt when the same is in use.Type: GrantFiled: October 17, 1986Date of Patent: May 3, 1988Assignee: HutchinsonInventors: Victor Zarife, Andre Cheymol, Gilles Argy
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Patent number: 4721496Abstract: A toothed belt with improved durability, comprising: a back surface section and tooth section that are made of a hydrogenated acrylonitrile-butadiene copolymer (H-NBR) with a hydrogenation rate of 80% or more, a tooth cloth that covers said tooth section and tooth lands positioned between the adjacent tooth sections, said tooth cloth being made of industrial nylon raw fiber with a viscosity relative to sulfuric acid of 2.6 to 2.8, a tensile strength of 5 g/denier or more, and a fineness of single fibers of 5 denier or less, and a plurality of core fibers with a core diameter of 0.9 to 1.1 mm and a ratio of said core diameter to said tooth cloth thickness in the range of 1.8 to 5.0, said core fibers being made of glass fiber filaments with a first twist number of 1.7 to 2.6 twists/inch, and a final twist number of 1.8 to 2.3 twists/inch, twisted together.Type: GrantFiled: November 5, 1986Date of Patent: January 26, 1988Assignee: Unitta Co., Ltd.Inventors: Nobuyuki Yokoyama, Shigehiro Isshiki
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Patent number: 4708703Abstract: A V-belt for continuous speed variators and which is formed of a visco-elastomeric material and includes a group of teeth formed on upper and lower parts thereof. The two groups of teeth are opposed to one another with each having a substantially equal base-surface. Each of said teeth is at least partially covered by a stiffening element that is oriented transverse to the belt and extends to opposite sides of the belt. Lateral surfaces of each pair of opposing teeth for contacting with corresponding pulleys are comparable in shape.Type: GrantFiled: December 22, 1986Date of Patent: November 24, 1987Assignee: Pirelli Transmissioni Industriali S.p.A.Inventors: Vincenzo Macchiarulo, Carlo Fiordaliso
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Patent number: 4701154Abstract: A laminated reinforcing material structure provides the reinforcement for a reinforced belt assembly. A method of manufacturing laminated reinforced belt assemblies is described.Type: GrantFiled: April 18, 1985Date of Patent: October 20, 1987Assignee: National Standard CompanyInventor: Doyle W. Rausch
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Patent number: 4695269Abstract: A substantially flat layer of material and method and apparatus for making the same, as well as a product utilizing the same, are provided, the flat layer of material having opposed substantially parallel spaced apart flat surfaces and comprising polymeric material and reinforcing particles disposed in the polymeric material and having at least a part thereof with the long dimensions thereof oriented so as to be substantially perpendicular to the opposed surfaces thereof.Type: GrantFiled: September 20, 1985Date of Patent: September 22, 1987Assignee: Dayco Products, Inc.Inventors: Joseph V. Tassone, James T. Candor
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Patent number: 4678455Abstract: A method of making a fiber-loaded polymeric sheet and power transmission belts utilizing same are provided wherein the sheet comprises a substantially solid polymeric matrix having fibers embedded therein and wherein the fibers comprise between 40% and 70% by weight of the sheet and at least 70% of the fibers are disposed in substantially parallel relation.Type: GrantFiled: September 26, 1986Date of Patent: July 7, 1987Assignee: Dayco Products, Inc.Inventor: Gerald C. Hollaway, Jr.
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Patent number: 4650442Abstract: A continuously variable transmission has a driving pulley and a driven pulley each of which has a V-shaped groove in which sits the belt. The belt comprises a base portion of a rubber-like compound in which are imbedded a plurality of transverse metal pins each of which has exposed bent end portions whose tips are tapered to conform to the taper of the grooves and a plurality of cables imbedded in the base and extending longitudinally around the belt for stabilizing the length of the belt. The pulley walls are coupled to their corrseponding shaft by a resilient coupling which helps provide a desired clamping force on the belt and which includes a series of serrated members designed to exhibit a wedging action which provides the desired clamping force.Type: GrantFiled: September 17, 1985Date of Patent: March 17, 1987Assignee: Neuberne H. Brown, Jr.Inventor: Frederick L. Parsons
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Patent number: 4632665Abstract: A toothed, positive drive, power transmission belt of the type having an endless substantially inextensible tensile member to which are secured belt teeth having a curvilinear cross-section and covered by an outer non-stretch fabric cover. In the body of each tooth is a layer of fabric reinforcement separated from the outer cover fabric of the belt tooth and of the land region between belt teeth by a cushion layer of elastomeric material of varying thickness so that the outer tooth portions are free to flex while the inner portion of the tooth is reinforced against shear. The resulting construction provide belts having substantially longer belt life than conventional belts at relatively high horsepower application.Type: GrantFiled: March 15, 1985Date of Patent: December 30, 1986Assignee: Uniroyal Power Transmission Company, Inc.Inventor: William A. Skura
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Patent number: 4583963Abstract: A belt construction provided, the belt construction comprising a tensile member intermediate the opposed sides of the belt construction, a plurality of teeth defining one of the opposed sides of the belt construction and being mainly formed of a first polymeric material that has reinforcing fibers therein, the belt construction having a land area between adjacent teeth, and a backing member defining the other of the opposed sides of the belt construction, the backing member being mainly formed from a second polymeric material that is initially separate from the material of the teeth and is substantially free of fibers therein, the material of the backing member having a surface that joins with a surface of each tooth whereby the joining surfaces define an interface line therebetween, the interface line in each land area having a portion thereof disposed spaced from the tensile member on the side thereof opposite to the side thereof that faces toward the teeth.Type: GrantFiled: January 14, 1985Date of Patent: April 22, 1986Assignee: Dayco CorporationInventors: Richard L. Marsh, Robert E. Wetzel
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Patent number: 4553951Abstract: In a belt and pulley system wherein motion is transferred between the two members, the belt is a metal belt having a pulley engaging face made of a relatively soft material and the pulley is one having a regular pattern of small hard protuberances, such as formed by knurling, on its belt engaging face which press into the soft metal of the belt to form permanent depressions arranged in a matching pattern which mesh with the protuberances to provide a positive slip-free motion transfer. The belt and pulley drive may be used advantageously in a device such as an X-Y plotter for accurately positioning, with good repeatibility and fine resolution, an associated member driven in one coordinate direction by the metal belt driven in turn by the knurled pulley.Type: GrantFiled: June 2, 1983Date of Patent: November 19, 1985Assignee: The Gerber Scientific Instrument CompanyInventor: Robert J. Pavone
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Patent number: 4534750Abstract: An automotive V-belt used for power transmission to drive accessory units to an automotive internal combustion engine. Surface smoothing agent such as wax is dispersed in the inner material of the belt for reducing attachment of dust to the belt surface.Type: GrantFiled: September 1, 1982Date of Patent: August 13, 1985Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Shigeki Okumoto
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Patent number: 4526637Abstract: A flat belting includes a plurality of individual layers of fabric that extend throughout the length and width of the belting. The layers are joined together by reinforcing elements which extend substantially in the direction of the thickness of the belting. The individual layers and reinforcing elements are encapsulated in a matrix of polymeric elastomeric resin, for example, polyvinylchloride. The individual layers are saturated with a liquid elastomer-forming polymeric resin prior to their being joined together. The reinforcing elements may be inserted, for example, by tufting, sewing, or stitch-bonding. One or more of the individual fabric layers may be a woven or other cloth having a plurality of substantially parallel yarns which extend in the lengthwise direction of the belting. One or more of the individual fabric layers may be a non-woven fabric.Type: GrantFiled: January 29, 1982Date of Patent: July 2, 1985Assignee: The Goodyear Tire & Rubber CompanyInventor: Barry W. Long
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Patent number: 4501771Abstract: An elastomer coated bias fabric for reinforcing power transmission belts and the like is disclosed wherein one face of the fabric is provided with an uncured, tacky, carboxylated elastomeric composition. In one embodiment, the fabric is prepared by pre-impregnating the fabric with a neoprene latex composition followed by coating the neoprene composition on both faces of the fabric, and after drying the fabric, overcoating one face only of the coated fabric with a tackified, carboxylated neoprene latex composition. A method and apparatus for manufacturing the coated fabric is also disclosed.Type: GrantFiled: February 22, 1982Date of Patent: February 26, 1985Assignee: Dayco CorporationInventor: Delmar D. Long