US3273978A - Reinforcing element - Google Patents
Reinforcing element Download PDFInfo
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- US3273978A US3273978A US193539A US19353962A US3273978A US 3273978 A US3273978 A US 3273978A US 193539 A US193539 A US 193539A US 19353962 A US19353962 A US 19353962A US 3273978 A US3273978 A US 3273978A
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- filaments
- undulations
- reinforcing element
- generally parallel
- filament
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/0646—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires
- D07B1/0653—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires in the core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0007—Reinforcements made of metallic elements, e.g. cords, yarns, filaments or fibres made from metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0057—Reinforcements comprising preshaped elements, e.g. undulated or zig-zag filaments
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/0646—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2001—Wires or filaments
- D07B2201/2007—Wires or filaments characterised by their longitudinal shape
- D07B2201/2008—Wires or filaments characterised by their longitudinal shape wavy or undulated
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2024—Strands twisted
- D07B2201/2029—Open winding
- D07B2201/2031—Different twist pitch
- D07B2201/2032—Different twist pitch compared with the core
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2033—Parallel wires
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2038—Strands characterised by the number of wires or filaments
- D07B2201/2039—Strands characterised by the number of wires or filaments three to eight wires or filaments respectively forming a single layer
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
- D07B2201/2052—Cores characterised by their structure
- D07B2201/2059—Cores characterised by their structure comprising wires
- D07B2201/206—Cores characterised by their structure comprising wires arranged parallel to the axis
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2095—Auxiliary components, e.g. electric conductors or light guides
- D07B2201/2097—Binding wires
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2401/00—Aspects related to the problem to be solved or advantage
- D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
- D07B2401/208—Enabling filler penetration
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2046—Tire cords
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2076—Power transmissions
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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S57/00—Textiles: spinning, twisting, and twining
- Y10S57/902—Reinforcing or tire cords
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- 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
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10855—Characterized by the carcass, carcass material, or physical arrangement of the carcass materials
- Y10T152/10873—Characterized by the carcass, carcass material, or physical arrangement of the carcass materials with two or more differing cord materials
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- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12326—All metal or with adjacent metals with provision for limited relative movement between components
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- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12333—Helical or with helical component
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- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12444—Embodying fibers interengaged or between layers [e.g., paper, etc.]
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- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12556—Organic component
- Y10T428/12562—Elastomer
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- 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]
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- 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
- Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
- Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
- Y10T428/249942—Fibers are aligned substantially parallel
- Y10T428/249943—Fiber is nonlinear [e.g., crimped, sinusoidal, etc.]
Definitions
- the principal object of this invention is, therefore, the provision of an improved reinforcing element for elastomeric material, which element is formed of metallic filaments so formed and assembled as to provide better longitudinal elasticity than in conventional metallic cables.
- the reinforcing element or cable of a plurality of individual metallic filaments at least some of which have been previously deformed and are then twisted, stranded and/ or cabled together in a manner which provides interstices between the filaments that are filled with elastomeric material during subsequent manufacturing operations in forming the elastomeric article in which the elements are incorporated or as .a separate step prlor to incorporation of the elements into such articles.
- FIG. 1 is a fragmentary view in side elevation of the presently preferred embodiment of a reinforcing element formed in accordance with this invention, the View being drawn to an enlarged scale with a portion of the rubber covering and filling of the element removed and with the individual filaments separated to more clearly illustrate the construction;
- FIG. 2 is a view similar to FIG. 1 showing a modified form of the reinforcing element
- FIG. 3 is a view similar to FIG. 1 showing a still different embodiment of the invention
- FIG. 4 is a side elevational view to an enlarged scale of another embodiment of the invention in which the individual metallic filaments are separately covered with elastomer, the filaments being shown separated from each other with a portion of the covering of each removed to more clearly illustrate the construction; and
- FIG. 5 is a fragmentary perspective view showing reinforcing elements of this invention incorporated in a rubber article.
- the reinforcing element 10, illustrated in FIG. 1, comprises an assembly of individual metallic filaments 11 at least some of which are nonrectilinear and hence have an undulating form which may be achieved by a prior deformation into a sinusoidal or helicoidal configuration.
- four such undulating filaments '11 are disposed in generally parallel relationship as a strand comprising the core of the element 10 and about this strand a filament 12 is helically wound.
- the filament 12 is preferably wire but may be nylon, rayon or other nonmetallic monofilament.
- the undulations of the filaments 11 provide a large number of interstices or spaces within the element so that the result can be said to be a loose cable which is capable of substantial extension, i.e. as high as 10 percent, when subjected to tension.
- a reinforcing element has a low modulus of elasticity or, in other words, would tend to flow under even small stresses and would not return to its original length when the tension was removed.
- a reinforcing element has been further treated in a manner to render it suitable for reinforcing elastomeric articles as, for example, by providing it with elastomeric material 13, it behaves dif ferently.
- the material 13 which not only covers the element but also fills the empty spaces therein due to the effect of the pressure under which the material is applied and also the pressures during molding or vulcanization of the article in which the element is incorporated, increases the modulus of extension of the element.
- the extension of the reinforcing element, when under tension, is now elastic so that the original length of the element is again achieved when the tension is removed. That is to say, the elastomeric material 13 within the spaces between the filaments 11 elastically opposes the straightening or other displacements of these filaments when under tension.
- the improved reinforcing element is particularly suitable for use on vehicle tires, conveyor or power transmission belts, hose, or similar reinforced elastomeric articles.
- the improved characteristics adhieved with the reinforcing elements constructed from an assembly of undulating metallic filaments is not restricted to assembling of .those elements in the manner indicated in FIG. 1.
- the number of filaments comprising the central strand or core can be varied and these can be held in generally parallel relationship by means other than a single helically wound filament.
- the reinforcing element 20' may comprise a plurality of undulating metallic filaments 21 disposed in generally parallel relationship as a central strand or core and retained in that relationship by a helical winding of undulating metallic filaments 22 of which two are here shown disposed in adjacent relationship.
- Such a reinforcing element possesses the same interstitial spaces between the filaments which are filled by the ela'stomer 23 with which the element is covered, either prior to or during incorporation in the elastomeric article which the element reinforces.
- This element therefore, possesses the same elastic extensibility as characterizes the form of the reinforcing element shown in FIG. 1.
- FIG. 3 shows a still different embodiment 'wherein the reinforcing element 30 has a plurality of undulating Inetallic filaments 31 disposed in generally parallel relationship as a central core or strand and provided with two helical wrappings or windings extending in opposite direc tions about the filaments 31.
- the filaments 32 and 3B which may be textile or metallic filaments, are wound in opposite directions around the filaments 3'1 and the assembly is covered with elastomeric material 34 which fills the interstices and provides elastic extensibility thereof.
- the reinforcing element 40 shown in FIG. 4 comprises individual undulating metallic filaments 41 which are separately covered with elastomeric material 42, as
- FIG. 5 shows the manner in which the reinforcing elements, formed in accordance with this invention, are incorporated into an elastomeric article 50.
- This may be achieved by disposing elements, such as 10, 20, 30 or 4-0, in generally parallel relationship and applying a coating of elastomer 51 thereover, as for example, by calendering this material upon the elements.
- the elements may have themselves been previously individually coated with rubber or may be assembled in uncoated relationship prior to the calendering operation. In either case, the interstices between the individual filaments, such as 11 of the elements, which spaces were provided by the undulations therein, are filled by the elastomeric material so that the article 50 has elastic extensibility in the direction of length of the elements.
- the undulations of the metallic filaments may 'be achieved in any known manner.
- One suitable method is to pass the wires between two toothed members similar to pinion gears which are slightly separated from one another so that the wire is given a permanent sinusoidal deformation.
- the wire may be guided in this passage between the toothed members by small grooves machined in the surfaces of the teeth which grooves have a diameter slightly in excess of that of the filament.
- the desired undulations of the metallic filaments may also be effected by twisting, stranding or cabling tog-ether several filaments to a relatively short pitch, stabilizing them from untwtisting and then separating them so that they are left in the generally helicoidal shape which they assumed during the twisting.
- the reinforcing elements In addition to forming the reinforcing elements by disposing a plurality of the filaments generally parallel in the form of a central strand or core and winding or wrapping rectilinear or undulating filaments thereabout, it is also possible to twist, strand or cable together a plurality of metallic filaments which have been previously deformed with the pitch of the cabling or stranding being distinctly different from that of the undulations of the individual filaments. It is also within the purview of this invention to have the individual metallic filaments stranded or otherwise assembled before undulation and then simultaneously undulating the filaments while in the stranded relationship with the strands thereafter assembled together by winding or twisting.
- a reinforcing element for elastomeric articles comprising an assembly of a plurality of metallic filaments ex tending in generally parallel juxtaposed relationship with .each filament having undulations transversely of its length .and with at least some of the undulations of adjacent filaments noncoincident thereby providing interstices between adjacent filaments penetrable by elastomer, and at least one filament helically wrapped in spaced convolutions about said plurality of generally parallel filaments, the spacing of said convolutions being sufficient to permit penetration by elastomer.
- a reinforcing element for elastomeric articles comprising a plurality of metallic filaments having individual undulations transversely of the length thereof and with the filaments disposed in generally parallel juxtaposed relationship, at least some of the undulations of adjacent filaments being noncoincident, and at least two elongated rectilinear members wound helically about said plurality of filaments in reverse directions and in spaced convolutions, the spacing between the convolutions being sufficient to permit penetration by elastomer.
- a reinforcing element for elastomeric articles comprising a plurality of individual metallic filaments each provided with transverse undulations and separately covered by elastomer, the said filaments extending in generally parallel juxtaposed relationship, and at least one filament covered with elastomer wound in spaced convolutions helically about said plurality of parallel separately covered filaments.
- a reinforcing element for elastomeric articles comprising an assembly of a plurality of metallic filaments extending in generally parallel juxtaposed relationship with each filament having undulations transversely of its length with at least some of the convolutions of adjacent filaments noncoincident thereby providing interstices between the filaments penetrable by elastomer to thereby provide elastic extensibility of the element, and at least one metallic filament having undulations transversely of its length twisted about said plurality of generally parallel filaments, the undulations of the last-mentioned filament being sufiicient to permit penetration of elastomer to and between the said plurality of filaments.
- a reinforced elastomeric article comprising a plurality of reinforcing elements extending in generally paral lel juxtaposed relationship and united by elastomeric material, each of said elements comprising a plurality of metallic filaments extending in generally parallel relationship with each filament having undulations transversely of its length and with at least some of the undulations of adjacent filaments noncoincident, and at least one filament helically Wrapped in spaced convolutions about said plurality of filaments, there being interstices between the said generally parallel filaments and the convolutions of said helically wrapped filament which are filled by the elastomer so that the article has elastic extensibility longitudinally of the reinforcing elements.
Description
Sept. 20, 1966 F. v. F. PAUL 3,273,978
REINFORCING ELEMENT Filed May 9, 1962 United States Patent Office 3 ,2 73 ,9 78 Patented Sept. 20, 1966 3,273,978 REENFURCiF JG ELEMENT Francis Victor Frederic Paul, Paris, France, assignor to Pneuinatitpies et Qaoutchouc Manufacture Kleber- Colombes, Paris, France, a corporation of France Filed May 9, 1962, Ser. No. 193,539 Claims. (Cl. 29l91) This invention relates to reinforcing elements for elastomeric articles and, more particularly, to such elements which are formed primarily of metallic wires.
The use of metallic wires to reinforce flexible articles of elastomeric material, such as tires, belts, hose and the like, provides such products with excellent qualities of resistance to flex-ing while retaining an adequate degree of suppleness without excessive cost. Unfortunately, however, wire reinforced elastomeric articles have frequently suffered from lack of extensibility longitudinally of the reinforcements. This has resulted in inadequate resistance to shock, such as impacts upon conveyor belts, abrupt changes in tension exerted on transmission belts, and other similar stresses. In an effort to overcome these defects, attempts have been made heretofore to provide the metal reinforcements as stranded or braided members formed of a plurality of separate filaments. While this has increased flexibility and provided some measure of extensibility, the results have not been equivalent to that possible with textile reinforcing elements.
The principal object of this invention is, therefore, the provision of an improved reinforcing element for elastomeric material, which element is formed of metallic filaments so formed and assembled as to provide better longitudinal elasticity than in conventional metallic cables.
This is achieved, in accordance with this invention, by constituting the reinforcing element or cable of a plurality of individual metallic filaments at least some of which have been previously deformed and are then twisted, stranded and/ or cabled together in a manner which provides interstices between the filaments that are filled with elastomeric material during subsequent manufacturing operations in forming the elastomeric article in which the elements are incorporated or as .a separate step prlor to incorporation of the elements into such articles.
Other and further objects and advantages of the invention will be apparent from the following detailed description of the presently preferred embodiment, and certain modifications thereof, described with reference to the accompanying drawing, forming a part of this application, and in which:
FIG. 1 is a fragmentary view in side elevation of the presently preferred embodiment of a reinforcing element formed in accordance with this invention, the View being drawn to an enlarged scale with a portion of the rubber covering and filling of the element removed and with the individual filaments separated to more clearly illustrate the construction;
FIG. 2 is a view similar to FIG. 1 showing a modified form of the reinforcing element;
'FIG. 3 is a view similar to FIG. 1 showing a still different embodiment of the invention;
FIG. 4 is a side elevational view to an enlarged scale of another embodiment of the invention in which the individual metallic filaments are separately covered with elastomer, the filaments being shown separated from each other with a portion of the covering of each removed to more clearly illustrate the construction; and
FIG. 5 is a fragmentary perspective view showing reinforcing elements of this invention incorporated in a rubber article.
The reinforcing element 10, illustrated in FIG. 1, comprises an assembly of individual metallic filaments 11 at least some of which are nonrectilinear and hence have an undulating form which may be achieved by a prior deformation into a sinusoidal or helicoidal configuration. In the illustrated embodiment, four such undulating filaments '11 are disposed in generally parallel relationship as a strand comprising the core of the element 10 and about this strand a filament 12 is helically wound. The filament 12 is preferably wire but may be nylon, rayon or other nonmetallic monofilament.
The undulations of the filaments 11 provide a large number of interstices or spaces within the element so that the result can be said to be a loose cable which is capable of substantial extension, i.e. as high as 10 percent, when subjected to tension. However, such a reinforcing element has a low modulus of elasticity or, in other words, would tend to flow under even small stresses and would not return to its original length when the tension was removed. However, when such a reinforcing element has been further treated in a manner to render it suitable for reinforcing elastomeric articles as, for example, by providing it with elastomeric material 13, it behaves dif ferently. Thus, the material 13, which not only covers the element but also fills the empty spaces therein due to the effect of the pressure under which the material is applied and also the pressures during molding or vulcanization of the article in which the element is incorporated, increases the modulus of extension of the element. Thus, the extension of the reinforcing element, when under tension, is now elastic so that the original length of the element is again achieved when the tension is removed. That is to say, the elastomeric material 13 within the spaces between the filaments 11 elastically opposes the straightening or other displacements of these filaments when under tension. Hence, the improved reinforcing element is particularly suitable for use on vehicle tires, conveyor or power transmission belts, hose, or similar reinforced elastomeric articles.
The improved characteristics adhieved with the reinforcing elements constructed from an assembly of undulating metallic filaments is not restricted to assembling of .those elements in the manner indicated in FIG. 1. Thus, the number of filaments comprising the central strand or core can be varied and these can be held in generally parallel relationship by means other than a single helically wound filament. For example, as shown in FIG. 2, the reinforcing element 20' may comprise a plurality of undulating metallic filaments 21 disposed in generally parallel relationship as a central strand or core and retained in that relationship by a helical winding of undulating metallic filaments 22 of which two are here shown disposed in adjacent relationship. Such a reinforcing element possesses the same interstitial spaces between the filaments which are filled by the ela'stomer 23 with which the element is covered, either prior to or during incorporation in the elastomeric article which the element reinforces. This element, therefore, possesses the same elastic extensibility as characterizes the form of the reinforcing element shown in FIG. 1.
FIG. 3 shows a still different embodiment 'wherein the reinforcing element 30 has a plurality of undulating Inetallic filaments 31 disposed in generally parallel relationship as a central core or strand and provided with two helical wrappings or windings extending in opposite direc tions about the filaments 31. The filaments 32 and 3B, which may be textile or metallic filaments, are wound in opposite directions around the filaments 3'1 and the assembly is covered with elastomeric material 34 which fills the interstices and provides elastic extensibility thereof.
The reinforcing element 40 shown in FIG. 4 comprises individual undulating metallic filaments 41 which are separately covered with elastomeric material 42, as
by use of an extrusion die or the like, so that the said elastomeric material 42 forms a substantially cylindrical cover for each individual element. A plurality of these separately covered elements may then be disposed in generally parallel relationship as a central strand or core and helically wound by one or more similar undulating filaments of which too such filaments 4 3 and 44 are here shown as extending in opposite directions about the central strand.
FIG. 5 shows the manner in which the reinforcing elements, formed in accordance with this invention, are incorporated into an elastomeric article 50. This may be achieved by disposing elements, such as 10, 20, 30 or 4-0, in generally parallel relationship and applying a coating of elastomer 51 thereover, as for example, by calendering this material upon the elements. The elements may have themselves been previously individually coated with rubber or may be assembled in uncoated relationship prior to the calendering operation. In either case, the interstices between the individual filaments, such as 11 of the elements, which spaces were provided by the undulations therein, are filled by the elastomeric material so that the article 50 has elastic extensibility in the direction of length of the elements.
The undulations of the metallic filaments may 'be achieved in any known manner. One suitable method is to pass the wires between two toothed members similar to pinion gears which are slightly separated from one another so that the wire is given a permanent sinusoidal deformation. The wire may be guided in this passage between the toothed members by small grooves machined in the surfaces of the teeth which grooves have a diameter slightly in excess of that of the filament.
The desired undulations of the metallic filaments may also be effected by twisting, stranding or cabling tog-ether several filaments to a relatively short pitch, stabilizing them from untwtisting and then separating them so that they are left in the generally helicoidal shape which they assumed during the twisting.
In addition to forming the reinforcing elements by disposing a plurality of the filaments generally parallel in the form of a central strand or core and winding or wrapping rectilinear or undulating filaments thereabout, it is also possible to twist, strand or cable together a plurality of metallic filaments which have been previously deformed with the pitch of the cabling or stranding being distinctly different from that of the undulations of the individual filaments. It is also within the purview of this invention to have the individual metallic filaments stranded or otherwise assembled before undulation and then simultaneously undulating the filaments while in the stranded relationship with the strands thereafter assembled together by winding or twisting. It will also be apparent that when the undulating filaments are provided with a helical winding this may comprise one or more cords of textile material instead of a filament of metal or of a textile substance. These and other modifications, which will be apparent to those skilled in the art, are all considered as encompassed Within the ambit of the invention the scope of which is defined in the appended claims.
Having thus described the invention, I claim:
1. A reinforcing element for elastomeric articles comprising an assembly of a plurality of metallic filaments ex tending in generally parallel juxtaposed relationship with .each filament having undulations transversely of its length .and with at least some of the undulations of adjacent filaments noncoincident thereby providing interstices between adjacent filaments penetrable by elastomer, and at least one filament helically wrapped in spaced convolutions about said plurality of generally parallel filaments, the spacing of said convolutions being sufficient to permit penetration by elastomer.
2. A reinforcing element for elastomeric articles comprising a plurality of metallic filaments having individual undulations transversely of the length thereof and with the filaments disposed in generally parallel juxtaposed relationship, at least some of the undulations of adjacent filaments being noncoincident, and at least two elongated rectilinear members wound helically about said plurality of filaments in reverse directions and in spaced convolutions, the spacing between the convolutions being sufficient to permit penetration by elastomer.
3. A reinforcing element for elastomeric articles comprising a plurality of individual metallic filaments each provided with transverse undulations and separately covered by elastomer, the said filaments extending in generally parallel juxtaposed relationship, and at least one filament covered with elastomer wound in spaced convolutions helically about said plurality of parallel separately covered filaments.
4. A reinforcing element for elastomeric articles comprising an assembly of a plurality of metallic filaments extending in generally parallel juxtaposed relationship with each filament having undulations transversely of its length with at least some of the convolutions of adjacent filaments noncoincident thereby providing interstices between the filaments penetrable by elastomer to thereby provide elastic extensibility of the element, and at least one metallic filament having undulations transversely of its length twisted about said plurality of generally parallel filaments, the undulations of the last-mentioned filament being sufiicient to permit penetration of elastomer to and between the said plurality of filaments.
5. A reinforced elastomeric article comprising a plurality of reinforcing elements extending in generally paral lel juxtaposed relationship and united by elastomeric material, each of said elements comprising a plurality of metallic filaments extending in generally parallel relationship with each filament having undulations transversely of its length and with at least some of the undulations of adjacent filaments noncoincident, and at least one filament helically Wrapped in spaced convolutions about said plurality of filaments, there being interstices between the said generally parallel filaments and the convolutions of said helically wrapped filament which are filled by the elastomer so that the article has elastic extensibility longitudinally of the reinforcing elements.
References Cited by the Examiner UNITED STATES PATENTS 943,998 1 2/1909 Roussillon 154-48 1,662,609 3/1928 Husch 15448 1,766,776 6/1930 Chisholm 154-149 1,963,813 6/1934 Van Voorhes 154-48 2,092,140 9/1937 Rowe 154-48 2,199,529 5/ 1940 Shackelford 74237 2,335,644 11/1943 Camp 57-149 2,468,304 4/1949 Musselman 57-153 2,555,261 5/1951 Walters 16 l-143 2,690,985 Q0/1954 Poole 74-237 2,884,044 4/ 1959 Hulswit et a1 154-48 2,983,299 5/1961 Jenkins 152--362 DAVID L. RECK, Primary Examiner.
N. F. MARKVA, Assistant Examiner.
Claims (1)
1. A REINFORCING ELEMENT FOR ELASTOMERIC ARTICLES COMPRISING AN ASSEMBLY OF A PLURALITY OF METALLIC FILAMENTS EXTENDING IN GENERALLY PARALLEL JUXTAPOSED RELATIONSHIP WITH EACH FILAMENT HAVING UNDULATIONS TRANSVERSELY OF ITS LENGTH AND WITH AT LEAST SOME OF THE UNDULATIONS OF ADJACENT FILAMENTS NONCOINCIDENT THEREBY PROVIDING INTERSTICES BE TWEEN ADJACENT FILAMENTS PENETRABLY BY ELASTOMER, AND AT LEAST ONE FILAMENT HELICALLY WRAPPED IN SPACED CONVOLUTIONS ABOUT SAID PLURALITY OF GENERALLY PARALLEL FILAMENTS, THE SPACING OF SAID CONVOLUTIONS BEING SUFFICIENT TO PERMIT PENETRATION BY ELASTOMER.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US193539A US3273978A (en) | 1962-05-09 | 1962-05-09 | Reinforcing element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US193539A US3273978A (en) | 1962-05-09 | 1962-05-09 | Reinforcing element |
Publications (1)
Publication Number | Publication Date |
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US3273978A true US3273978A (en) | 1966-09-20 |
Family
ID=22714038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US193539A Expired - Lifetime US3273978A (en) | 1962-05-09 | 1962-05-09 | Reinforcing element |
Country Status (1)
Country | Link |
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US (1) | US3273978A (en) |
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US3336744A (en) * | 1964-10-28 | 1967-08-22 | Trefileries Leon Bekaert S P R | Reinforcing cord having two-filament core surrounded by six single filatment units |
US3402546A (en) * | 1964-10-28 | 1968-09-24 | Bekaert Pvba Leon | Twisted flat wires and method of making said wires |
US3522139A (en) * | 1967-08-03 | 1970-07-28 | Dunlop Co Ltd | Reinforced rubber or plastic article |
US3848406A (en) * | 1971-11-18 | 1974-11-19 | Nitto Boseki Co Ltd | Glass fiber roving band for fiber reinforced plastics |
US3996020A (en) * | 1974-12-30 | 1976-12-07 | Tokyo Rope Mfg. Co., Ltd. | Helically formed steel cord |
US4022009A (en) * | 1975-05-12 | 1977-05-10 | Akzo N.V. | Metallic cable |
FR2404514A1 (en) * | 1977-09-30 | 1979-04-27 | Bekaert Sa Nv | STEEL CABLES FOR REINFORCING ELASTOMETER ARTICLES AND REINFORCED ARTICLES THEREFORE OBTAINED |
US4168340A (en) * | 1976-05-24 | 1979-09-18 | N. V. Bekaert S.A. | Reinforcement of resilient articles |
US4219601A (en) * | 1977-10-28 | 1980-08-26 | Bridgestone Tire Company Limited | Rubber reinforcing member and a method of manufacturing the same |
US4235274A (en) * | 1976-02-13 | 1980-11-25 | Bridgestone Tire Co., Ltd. | Tread reinforcing construction of pneumatic radial tire for heavy-load vehicles |
US4256523A (en) * | 1977-01-04 | 1981-03-17 | Handelsbolaget Evaksystem Ekstrom & Co. | Method for the manufacture of a pipe |
US4258543A (en) * | 1978-10-31 | 1981-03-31 | Industrie Pirelli S.P.A. | Metal cord |
US4313998A (en) * | 1978-10-06 | 1982-02-02 | Application Des Gaz | Textile element and woven material intended in particular to serve as substrate for a catalytic material, for instance a combustion catalytic material |
JPS6087940A (en) * | 1983-09-26 | 1985-05-17 | ザ グツドイア− タイヤ アンド ラバ− コンパニ− | Method and device for manufacturing metallic cable |
US4523425A (en) * | 1982-04-26 | 1985-06-18 | Akzo Nv | Reinforcement cable for elastomeric conduits |
US4544603A (en) * | 1983-08-15 | 1985-10-01 | The Goodyear Tire & Rubber Company | Reinforcing element for elastomeric articles and elastomeric articles made |
US4718470A (en) * | 1979-09-13 | 1988-01-12 | Bridgestone Tire Company Limited | Pneumatic radial tires |
US4820563A (en) * | 1987-08-13 | 1989-04-11 | National-Standard Company | Tire bead assembly |
US4974654A (en) * | 1986-10-31 | 1990-12-04 | Toyo Tire & Rubber Co., Ltd. | Pneumatic tire reinforced by steel cords with tapered ends |
EP1256652A2 (en) * | 2001-05-09 | 2002-11-13 | Sumitomo Rubber Industries Ltd. | Metallic cord |
EP1314812A2 (en) * | 2001-11-22 | 2003-05-28 | Sumitomo Rubber Industries Ltd. | Metal cord and pneumatic tire including the same |
EP1344864A2 (en) * | 2002-03-13 | 2003-09-17 | Sumitomo Rubber Industries, Ltd. | Steel cord, method of making the same and pneumatic tire including the same |
US20050013981A1 (en) * | 2003-05-30 | 2005-01-20 | Polymer Group, Inc. | Unitized structural reinforcement construct |
US20060147694A1 (en) * | 2003-05-28 | 2006-07-06 | Paul Schmidt | Unitized filamentary concrete reinforcement having circumferential binding element |
US20060222836A1 (en) * | 2003-01-24 | 2006-10-05 | Polymer Group, Inc. | Unitized fibrous concrete reinforcement |
US20060281382A1 (en) * | 2005-06-10 | 2006-12-14 | Eleni Karayianni | Surface functional electro-textile with functionality modulation capability, methods for making the same, and applications incorporating the same |
US20070042179A1 (en) * | 2005-08-16 | 2007-02-22 | Eleni Karayianni | Energy active composite yarn, methods for making the same, and articles incorporating the same |
EP1983098A1 (en) * | 2006-01-20 | 2008-10-22 | Bridgestone Corporation | Rubber-steel cord composite and tire using the same |
US20090071196A1 (en) * | 2004-11-15 | 2009-03-19 | Textronics, Inc. | Elastic composite yarn, methods for making the same, and articles incorporating the same |
US20090139601A1 (en) * | 2004-11-15 | 2009-06-04 | Textronics, Inc. | Functional elastic composite yarn, methods for making the same and articles incorporating the same |
US20090145533A1 (en) * | 2003-04-25 | 2009-06-11 | Textronics Inc. | Electrically conductive elastic composite yarn, methods for making the same, and articles incorporating the same |
EP2143570A3 (en) * | 2008-07-09 | 2010-09-01 | Continental Reifen Deutschland GmbH | Pneumatic tyre for a vehicle |
CN102470700A (en) * | 2009-07-27 | 2012-05-23 | N.V.贝卡特股份有限公司 | Hybrid steel-textile reinforcement ply for radial tires |
ITTO20120885A1 (en) * | 2012-10-10 | 2014-04-11 | Bridgestone Corp | TIRE EQUIPPED WITH A TREAD STRAP WITH HIGH SIDE RIGIDITY |
EP2697147A4 (en) * | 2011-04-14 | 2015-02-18 | Otis Elevator Co | Coated rope or belt for elevator systems |
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Cited By (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3336744A (en) * | 1964-10-28 | 1967-08-22 | Trefileries Leon Bekaert S P R | Reinforcing cord having two-filament core surrounded by six single filatment units |
US3402546A (en) * | 1964-10-28 | 1968-09-24 | Bekaert Pvba Leon | Twisted flat wires and method of making said wires |
US3522139A (en) * | 1967-08-03 | 1970-07-28 | Dunlop Co Ltd | Reinforced rubber or plastic article |
US3848406A (en) * | 1971-11-18 | 1974-11-19 | Nitto Boseki Co Ltd | Glass fiber roving band for fiber reinforced plastics |
US3996020A (en) * | 1974-12-30 | 1976-12-07 | Tokyo Rope Mfg. Co., Ltd. | Helically formed steel cord |
US4022009A (en) * | 1975-05-12 | 1977-05-10 | Akzo N.V. | Metallic cable |
US4235274A (en) * | 1976-02-13 | 1980-11-25 | Bridgestone Tire Co., Ltd. | Tread reinforcing construction of pneumatic radial tire for heavy-load vehicles |
US4168340A (en) * | 1976-05-24 | 1979-09-18 | N. V. Bekaert S.A. | Reinforcement of resilient articles |
US4256523A (en) * | 1977-01-04 | 1981-03-17 | Handelsbolaget Evaksystem Ekstrom & Co. | Method for the manufacture of a pipe |
FR2404514A1 (en) * | 1977-09-30 | 1979-04-27 | Bekaert Sa Nv | STEEL CABLES FOR REINFORCING ELASTOMETER ARTICLES AND REINFORCED ARTICLES THEREFORE OBTAINED |
US4219601A (en) * | 1977-10-28 | 1980-08-26 | Bridgestone Tire Company Limited | Rubber reinforcing member and a method of manufacturing the same |
US4313998A (en) * | 1978-10-06 | 1982-02-02 | Application Des Gaz | Textile element and woven material intended in particular to serve as substrate for a catalytic material, for instance a combustion catalytic material |
US4258543A (en) * | 1978-10-31 | 1981-03-31 | Industrie Pirelli S.P.A. | Metal cord |
US4718470A (en) * | 1979-09-13 | 1988-01-12 | Bridgestone Tire Company Limited | Pneumatic radial tires |
US4523425A (en) * | 1982-04-26 | 1985-06-18 | Akzo Nv | Reinforcement cable for elastomeric conduits |
US4544603A (en) * | 1983-08-15 | 1985-10-01 | The Goodyear Tire & Rubber Company | Reinforcing element for elastomeric articles and elastomeric articles made |
JPS6087940A (en) * | 1983-09-26 | 1985-05-17 | ザ グツドイア− タイヤ アンド ラバ− コンパニ− | Method and device for manufacturing metallic cable |
US4545190A (en) * | 1983-09-26 | 1985-10-08 | The Goodyear Tire & Rubber Company | Metallic cable and method and apparatus for making same |
JPH024384B2 (en) * | 1983-09-26 | 1990-01-29 | Gutsudoiyaa Taiya Ando Rabaa Co Za | |
US4974654A (en) * | 1986-10-31 | 1990-12-04 | Toyo Tire & Rubber Co., Ltd. | Pneumatic tire reinforced by steel cords with tapered ends |
US4820563A (en) * | 1987-08-13 | 1989-04-11 | National-Standard Company | Tire bead assembly |
EP1256652A3 (en) * | 2001-05-09 | 2004-06-30 | Sumitomo Rubber Industries Ltd. | Metallic cord |
EP1256652A2 (en) * | 2001-05-09 | 2002-11-13 | Sumitomo Rubber Industries Ltd. | Metallic cord |
JP2002339276A (en) * | 2001-05-09 | 2002-11-27 | Sumitomo Rubber Ind Ltd | Metallic cord and pneumatic tire using the same |
EP1314812A3 (en) * | 2001-11-22 | 2004-07-07 | Sumitomo Rubber Industries Ltd. | Metal cord and pneumatic tire including the same |
US7131257B2 (en) | 2001-11-22 | 2006-11-07 | Sumitomo Rubber Industries, Ltd. | Metal cord and pneumatic tire including the same |
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US20030116248A1 (en) * | 2001-11-22 | 2003-06-26 | Shinichi Miyazaki | Metal cord and pneumatic tire including the same |
US20030221762A1 (en) * | 2002-03-13 | 2003-12-04 | Shinichi Miyazaki | Steel cord, method of making the same and pneumatic tire including the same |
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US6959745B2 (en) | 2002-03-13 | 2005-11-01 | Sumitomo Rubber Industries, Ltd. | Steel cord, method of making the same and pneumatic tire including the same |
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US20060222836A1 (en) * | 2003-01-24 | 2006-10-05 | Polymer Group, Inc. | Unitized fibrous concrete reinforcement |
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US20090145533A1 (en) * | 2003-04-25 | 2009-06-11 | Textronics Inc. | Electrically conductive elastic composite yarn, methods for making the same, and articles incorporating the same |
US20060147694A1 (en) * | 2003-05-28 | 2006-07-06 | Paul Schmidt | Unitized filamentary concrete reinforcement having circumferential binding element |
US20050013981A1 (en) * | 2003-05-30 | 2005-01-20 | Polymer Group, Inc. | Unitized structural reinforcement construct |
US7452418B2 (en) | 2003-05-30 | 2008-11-18 | Polymer Group, Inc. | Unitized filamentary concrete reinforcement having circumferential binding element |
US20090139601A1 (en) * | 2004-11-15 | 2009-06-04 | Textronics, Inc. | Functional elastic composite yarn, methods for making the same and articles incorporating the same |
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US20100218872A1 (en) * | 2006-01-20 | 2010-09-02 | Bridgestone Corporation | Rubber-steel cord composite and tire using the same |
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