US3979536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zero degree belted tires, and high "soft stretch" belt-forming tapes therefor
Assignee: UG Licensing Services Inc
•
Filing: 1975-01-17
•
Granted: 1976-09-07
•
Expires: 1995-01-17
Abstract
Abstract The single-stage building of 0° belted pneumatic tires completely in flat band form on standard building drums, is disclosed. The feasibility of the process rests on the provision of the substantially inextensible metallic or non-metallic belt cords in the form of longitudinally extensible high "soft stretch" tapes. In a preferred version of the invention, the tape is composed of a plurality of cords each having formed therein a multiplicity of undulations which in any given straight length of the tape are substantially planar, the cords being disposed in side by side relation so that the planes of the undulations of each cord are generally parallel to the planes of the undulations of each adjacent cord, and the cords together with a relatively weak and frangible but only minimally undulated stabilizing yarn for the tape being secured to each other and held in their undulating state by a relative weak, chain stitch knitted, frangible stitching yarn or thread. The belt-forming structure is built by helically winding such tape circumferentially of the building drum in the medial region of the still cylindrical or flat band carcass at an angle of substantially 90° to a plane including the common axis of the carcass and the building drum, with the undulations of the cords "on end", i.e. in planes generally normal to the surface of the building drum. Upon the raw tire then being radially expanded into its toroidal form, the stabilizing and stitching yarns break and the cords are straightened out, resulting in the formation of a mono-ply, plural-lead, helical cord 0° belt in the shaped tire. The "soft stretch" of the tape used, i.e. the ratio of the length of the component cords when fully straightened without stretching, to the length of the unextended tape, may be as low as about 20% or as high as about 400%, depending on the extent to which, for any given tire, the belt-forming structure will have to expand radially from its starting diameter on the building drum to the final belt diameter in the toroidally shaped tire. Each cord may additionally be locally weakened at a multiplicity of longitudinally spaced points to facilitate a possible stretching or elongation of the cords after the same have been fully straightened out during the radial expansion of the belt. In any such tape, the component cords must be phased relative to each other to dispose the respective weakened portions of each cord out of lateral alignment with the weakened portions of at least each next adjacent cord, and the weakening interval should preferably be so selected that in the final belt the weakened portions are out of lateral alignment with each other in directions parallel to the tire axis. The full nature and extent of the invention is discernible, however, only by reference to the entire disclosure.
Inventors
- 👤 James J. Neville
- 👤 Wesley Ferrell
- 👤 Daniel Shichman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:55
CPC Classifications
D; D04; D04B; D04B23/00; D04B23/12; B; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/22; B60; B60C; B60C9/00; B60C9/0042; B60C9/18; B60C9/20; B60C9/22; B60C9/2204; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10783; Y10T428/00; Y10T428/15; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/24479; Y10T428/24628; Y10T428/24669; Y10T428/24686; Y10T428/24694; Y10T428/24711; Y10T428/24719
Claims Analysis
Total Claims: 75
Claim 1
Independent Claim
448 words
A high soft stretch tape of reinforcing cord for a molded elastomeric article intended to undergo an expansion of at least about 20% after incorporation of the tape therein, comprising: I. a first subtape including A. at least one reinforcing cord, 1. said cord having a multiplicity of undulations therein 2. which in any given straight length of said first subtape are substantially planar, 3. whereby said first subtape can be elongated, without any stretching of said cord thereof, by straightening of the latter to remove said undulations therefrom, and 4. said cord being locally weakened at a multiplicity of longitudinally spaced portions thereof, and B. relatively weak tying means 1. acting on said cord and 2. releasably holding the same in the undulating state thereof, 3. said tying means being constructed a. to hold said cord against straightening out under moderate forces such as are applied to said first subtape in normal handling thereof b. but to yield and permit said cord to straighten out under appreciably higher forces such as are applied to said first subtape when the same is incorporated in said article and the latter undergoes an expansion; Ii. and at least one additional substantially identical subtape disposed in side by side abutting relation with said first subtape, A. the plane of said undulations of said cord of each additional subtape being substantially parallel to the plane of said undulations of said cord of said first subtape, B. at least one of each two adjacent subtapes being provided on the cord thereof abutting against the other of such two adjacent subtapes with a coating of a tacky substance to enable such subtapes to adhere to each other so as to form a composite tape having a higher number of component cords, and C. said weakened portions in each of said abutting cords being out of lateral alignment with the weakened portions of the other of said abutting cords; Iii. the magnitude of said undulations of said cord in each subtape being predetermined to provide a composite tape stretch ratio, defined as the ratio of the length of each cord when unstretched but fully straight to the length of the composite tape when said cords are undulated, which is at least about 1.2, which is no greater than substantially equal to the expansion ratio of said article, defined as the ratio of a given dimension of said article after the same is expanded to the corresponding dimension of said article before the same is expanded, and which is no smaller than said expansion ratio less approximately the capability of said cords to elongate by strain, by partial untwisting, and by rupture at said weakened portions.
Claim 2
Dependent Claim
448 words
A high soft stretch tape of reinforcing cord for a molded elastomeric article intended to undergo an expansion of at least about 20% after incorporation of the tape therein, comprising: I. a first subtape including A. at least one reinforcing cord, 1. said cord having a multiplicity of undulations therein 2. which in any given straight length of said first subtape are substantially planar, 3. whereby said first subtape can be elongated, without any stretching of said cord thereof, by straightening of the latter to remove said undulations therefrom, and 4. said cord being locally weakened at a multiplicity of longitudinally spaced portions thereof, and B. relatively weak tying means 1. acting on said cord and 2. releasably holding the same in the undulating state thereof, 3. said tying means being constructed a. to hold said cord against straightening out under moderate forces such as are applied to said first subtape in normal handling thereof b. but to yield and permit said cord to straighten out under appreciably higher forces such as are applied to said first subtape when the same is incorporated in said article and the latter undergoes an expansion; Ii. and at least one additional substantially identical subtape disposed in side by side abutting relation with said first subtape, A. the plane of said undulations of said cord of each additional subtape being substantially parallel to the plane of said undulations of said cord of said first subtape, B. at least one of each two adjacent subtapes being provided on the cord thereof abutting against the other of such two adjacent subtapes with a coating of a tacky substance to enable such subtapes to adhere to each other so as to form a composite tape having a higher number of component cords, and C. said weakened portions in each of said abutting cords being out of lateral alignment with the weakened portions of the other of said abutting cords; Iii. the magnitude of said undulations of said cord in each subtape being predetermined to provide a composite tape stretch ratio, defined as the ratio of the length of each cord when unstretched but fully straight to the length of the composite tape when said cords are undulated, which is at least about 1.2, which is no greater than substantially equal to the expansion ratio of said article, defined as the ratio of a given dimension of said article after the same is expanded to the corresponding dimension of said article before the same is expanded, and which is no smaller than said expansion ratio less approximately the capability of said cords to elongate by strain, by partial untwisting, and by rupture at said weakened portions.
Claim 3
Dependent Claim
43 words
A tape according to claim 1, wherein the extent of weakening of said cord in each subtape is sufficient to reduce the tensile strength thereof at each of said weakened portions to between about 5% and about 20% of its full tensile strength.
Claim 4
Dependent Claim
37 words
A tape according to claim 1, said cord in each subtape being provided with a plurality of nicks spaced from each other along said cord, each of said nicks constituting a respective one of said weakened portions.
Claim 5
Dependent Claim
44 words
A tape according to claim 3, wherein the depths of said nicks are sufficient to reduce the tensile strength of said cord in each subtape at each of the nicked portions thereof to between about 5% and about 20% of its full tensil strength.
Claim 6
Dependent Claim
61 words
A tape according to claim 3, wherein the spacing of adjacent nicks from one another in each cord is equal to at least the stress transfer length of that cord, defined as the length thereof over which the adhesion of the surrounding elastomer material to the cord in the fully molded article is equal to the breaking strength of the cord.
Claim 7
Dependent Claim
26 words
A tape according to claim 1, wherein each cord has a body made of a material selected from the group consisting of metallic and non-metallic fibers.
Claim 8
Dependent Claim
43 words
A tape according to claim 6, wherein said cord in each subtape has an individual coating of rubber on said body over the entire length thereof, each of said weakened portions extending through the rubber coating and into said body of said cord.
Claim 9
Dependent Claim
12 words
A tape according to claim 6, wherein said cord material is rayon.
Claim 10
Dependent Claim
12 words
A tape according to claim 6, wherein said cord material is glass.
Claim 11
Dependent Claim
13 words
A tape according to claim 6, wherein said cord material is metal wire.
Claim 12
Dependent Claim
12 words
A tape according to claim 6, wherein said cord material is nylon.
Claim 13
Dependent Claim
12 words
A tape according to claim 6, wherein said cord material is polyester.
Claim 14
Dependent Claim
21 words
A tape according to claim 1, wherein said stretch ratio of said composite tape is between about 1.2 and about 4.
Claim 15
Dependent Claim
21 words
A tape according to claim 1, wherein said stretch ratio of said composite tape is between about 1.5 and about 1.9.
Claim 16
Dependent Claim
59 words
A tape according to claim 1, said tying means in each subtape comprising at least one frangible stitching yarn defining at least one series of loops coextensive with the length of the tape, said loops embracing respective portions of the respective cord at said undulations and releasably confining adjacent ones of said portions against longitudinal separation from each other.
Claim 17
Dependent Claim
69 words
A tape according to claim 15, further comprising a frangible stabilizing yarn extending longitudinally of each subtape in an almost straight condition, said stabilizing yarn being held in each tape jointly with said cord thereof by said loops of said stitching yarn, the strength of said stabilizing yarn being sufficient to prevent a premature opening of said loops under said moderate forces but insufficient to withstand said higher forces.
Claim 18
Dependent Claim
28 words
A tape according to claim 15, wherein said stitching yarn in each subtape defines a single series of loops disposed substantially along the longitudinal midline of said undulations.
Claim 19
Dependent Claim
32 words
A tape according to claim 17, wherein said stitching yarn in each subtape is warp-knitted in a 1-0.0-1 pattern to define respective series of loops, said cord being laid into said loops.
Claim 20
Dependent Claim
18 words
A tape according to claim 18, wherein said undulations of said cord in each subtape are generally sinusoidal.
Claim 21
Dependent Claim
78 words
A tape according to claim 19, further comprising a frangible stabilizing yarn extending longitudinally of each subtape in an almost straight condition, said stabilizing yarn being held in each subtape jointly with said cord thereof and substantially along the longitudinal midline of said undulations by said loops of said stitching yarn, the strength of said stabilizing yarn being sufficient to prevent a premature opening of said loops under said moderate forces but insufficient to withstand said higher forces.
Claim 22
Dependent Claim
22 words
A tape according to claim 20, said stabilizing yarn in each subtape being tensioned to about 70-80% of its full tensile strength.
Claim 23
Dependent Claim
52 words
A tape according to claim 1, said tying means in each subtape comprising a strip of frangible sheet material coextensive with the length of that subtape, said cord thereof being secured to a face of said strip with the plane of each of said undulations parallel to the plane of said strip.
Claim 24
Dependent Claim
97 words
A tape according to claim 22, wherein each subtape comprises at least two cords with substantially identical generally sinusoidal undulations and with corresponding weakened portions, said cords being arranged in nesting relation to each other with each undulation of each cord in a common plane with the interfitting undulation of each other cord, all cords of each subtape being secured to said face of the associated strip, and said weakened, portions of each cord in each subtape being out of lateral alignment with the weakened portions of at least each next adjacent cord in the same subtape.
Claim 25
Dependent Claim
43 words
A tape according to claim 23, wherein the extent of weakening of each cord in each subtape is sufficient to reduce the tensile strength thereof at each of said weakened portions to between about 5% and about 20% of its full tensile strength.
Claim 26
Dependent Claim
44 words
A tape according to claim 23, each of said cords in each subtape being provided with a plurality of nicks spaced from each other along the respective cord, each of said nicks in each cord constituting a respective one of said weakened portions thereof.
Claim 27
Dependent Claim
41 words
A tape according to claim 25, wherein the depths of said nicks are sufficient to reduce the tensile strength of each cord at each of the nicked portions thereof to between about 5% and about 20% of its full tensile strength.
Claim 28
Dependent Claim
138 words
A tape according to claim 1, wherein each subtape comprises a plurality of cords with substantially identical undulations and with corresponding weakened portions, the plane of said undulations of each of said cords of each subtape being substantially parallel to the plane of said undulations of each of the other cords in the same subtape, said tying means in each subtape being secured to all of said cords thereof for both holding them in their respective undulating states and binding them together into a unitary structure, said weakened portions of each cord in each subtape being out of lateral alignment with the weakened portions of at least each next adjacent cord in the same subtape, and said coating of a tacky substance being provided on the abutting side cord of at least one of each two adjacent tapes.
Claim 29
Dependent Claim
43 words
A tape according to claim 27, wherein each of said cords in each subtape has an individual coating of rubber thereon over its entire length, each of said weakened portions extending through the rubber coating and into the body of the respective cord.
Claim 30
Dependent Claim
28 words
A tape according to claim 27, said undulations of each cord in each subtape being out of lateral alignment with the undulations of each next adjacent cord thereof.
Claim 31
Dependent Claim
27 words
A tape according to claim 27, said undulations of each cord in each subtape being in lateral alignment with the undulations of each next adjacent cord thereof.
Claim 32
Dependent Claim
39 words
A tape according to claim 27, wherein said composite tape at at least one end thereof is effectively skived across its width at an angle of between about 3° and about 30° to the longitudinal dimension of the tape.
Claim 33
Dependent Claim
46 words
A tape according to claim 27, said tying means in each subtape comprising a frangible stitching yarn defining a series of loops coextensive with the length of subtape, each of said loops embracing a respective set of laterally adjacent portions of said cords at said undulations.
Claim 34
Dependent Claim
129 words
A tape according to claim 27, said undulations being generally sinusoidal, said tying means in each subtape comprising a frangible stitching yarn warp-knitted in a 1-0/0-1 pattern into a chain stitch formation of loops coextensive with the length of that subtape, each of said loops embracing a respective laid-in set of laterally adjacent portions of said cords at said undulations, and each subtape further comprising a frangible stabilizing yarn extending longitudinally of that subtape in an almost straight condition, respective portions of said stabilizing yarn in each subtape being embraced by said loops jointly with the laterally adjacent portions of said cords, the strength of said stabilizing yarn being sufficient to prevent a premature opening of said loops under said moderate forces but insufficient to withstand said higher forces.
Claim 35
Dependent Claim
26 words
A tape according to claim 33, said undulations of each cord in each subtape being out of phase with the undulations of each next adjacent cord.
Claim 36
Dependent Claim
39 words
A tape according to claim 33, wherein said composite tape at at least one end thereof is effectively skived across its width at an angle of between about 3° and about 30° to the longitudinal dimension of the tape.
Claim 37
Dependent Claim
33 words
A tape according to claim 33, said undulations of each cord in each lower cord number subtape being out of phase with the undulations of each next adjacent cord in the same subtape.
Claim 38
Dependent Claim
26 words
A tape according to claim 36, said undulations of the two abutting side cords of each two adjacent subtapes being out of phase with each other.
Claim 39
Dependent Claim
43 words
A tape according to claim 37, wherein the extent of weakening of each cord of each subtape is sufficient to reduce the tensile strength thereof at each of said weakened portions to between about 5% and about 20% of its full tensile strength.
Claim 40
Dependent Claim
44 words
A tape according to claim 37, each of said cords of each subtape being provided with a plurality of nicks spaced from each other along the respective cord, each of said nicks in each cord constituting a respective one of said weakened portions thereof.
Claim 41
Dependent Claim
42 words
A tape according to claim 39, wherein each of said cords in each subtape has an individual coating of rubber thereon over its entire length, each of said nicks extending through the rubber coating and into the body of the respective cord.
Claim 42
Dependent Claim
41 words
A tape according to claim 39, wherein the depths of said nicks are sufficient to reduce the tensile strength of each cord at each of the nicked portions thereof to between about 5% and about 20% of its full tensile strength.
Claim 43
Dependent Claim
65 words
A tape according to claim 39, wherein the spacing of adjacent nicks from one another in each cord of each subtape is equal to at least the stress transfer length of the respective cord, defined as the length thereof over which the adhesion of the surrounding elastomer material to the cord in the fully molded article is equal to the breaking strength of the cord.
Claim 44
Dependent Claim
91 words
A tape according to claim 1, wherein each subtape comprises a plurality of cords with substantially identical undulations and with corresponding weakened portions, said cords in each subtape are arranged in nesting relation to each other so that each undulation of each cord is in a common plane with the interfitting undulation of the next adjacent cord in the same subtape, and said weakened portions of each cord in each subtape are out of lateral alignment with the weakened portions of at least each next adjacent cord in the same subtape.
Claim 45
Dependent Claim
59 words
A tape according to claim 43, said tying means in each subtape comprising a frangible stitching yarn defining a series of loops coextensive with the length of that subtape, each of said loops embracing at said undulations a respective set of cord portions which are in coplanar overlying relation with each other in the longitudinal direction of the subtape.
Claim 46
Dependent Claim
141 words
A tape according to claim 43, said undulations being generally sinusoidal said tying means in each subtape comprising a frangible stitching yarn warp-knitted in a 1-0/0-1 pattern into a chain stitch formation of loops coextensive with the length of that subtape, each of said loops embracing at said undulations a respective laid-in set of cord portions which are in coplanar overlying relation with each other in the longitudinal direction of the respective subtape, and each subtape further comprising a frangible stabilizing yarn extending longitudinally of that subtape in an almost straight condition, respective portions of said stabilizing yarn being embraced by said loops jointly with the adjacent ones of said mutually overlying cord portions, the strength of said stabilizing yarn being sufficient to prevent a premature opening of said loops under said moderate forces but insufficient to withstand said higher forces.
Claim 47
Dependent Claim
39 words
A tape according to claim 45, wherein the composite tape at at least one end thereof is effectively skived across its width at an angle of between about 3° and about 30° to the longitudinal dimension of the tape.
Claim 48
Dependent Claim
43 words
A tape according to claim 45, wherein the extent of weakening of each cord in each subtape is sufficient to reduce the tensile strength thereof at each of said weakened portions to between about 5% and about 20% of its full tensile strength.
Claim 49
Dependent Claim
44 words
A tape according to claim 45, each of said cords in each subtape being provided with a plurality of nicks spaced from each other along the respective cord, each of said nicks in each cord constituting a respective one of said weakened portions thereof.
Claim 50
Dependent Claim
41 words
A tape according to claim 48, wherein the depths of said nicks are sufficient to reduce the tensile strength of each cord at each of the nicked portions thereof to between about 5% and about 20% of its full tensile strength.
Claim 51
Dependent Claim
65 words
A tape according to claim 48, wherein the spacing of adjacent nicks from one another in each cord in each subtape is equal to at least the stress transfer length of the respective cord, defined as the length thereof over which the adhesion of the surrounding elastomer material to the cord in the fully molded article is equal to the breaking strength of the cord.
Claim 52
Dependent Claim
53 words
A tape according to claim 43, said tying means in each subtape comprising a strip of frangible sheet material coextensive with the length of that subtape, said cords being secured to a face of said strip with the common plane of each set of said undulations parallel to the plane of said strip.
Claim 53
Dependent Claim
37 words
A tape according to claim 45, said undulations of said cords making up each lower cord number subtape being out of phase with the undulations of said cords making up each next adjacent lower cord number subtape.
Claim 54
Dependent Claim
103 words
A tape according to claim 1, wherein each subtape comprises a plurality of cords each having a respective set of undulations and a respective multiplicity of weakened portions, and said tying means in each subtape comprises an adhesion-producing substance applied to at least one of each two adjacent cords at least at a plurality of spaced points, said adjacent cords being in contact with and adhesively secured to each other at least at said points, and said weakened portions of each cord in each subtape being out of lateral alignment with the weakened portions of each next adjacent cord in the same subtape.
Claim 55
Dependent Claim
30 words
A tape according to claim 53, wherein said adhesion-producing substance is in the form of a coating of a tacky material applied to each cord individually over its entire length.
Claim 56
Dependent Claim
40 words
A tape according to claim 1, wherein said cord in each subtape is treated over its entire length with a coating of a material effective to enhance the adhesion of said cord to the elastomeric material to be reinforced thereby.
Claim 57
Dependent Claim
43 words
A tape according to claim 55, wherein each subtape comprises a plurality of cords each individually treated over its entire length with a coating of a material effective to enhance the adhesion of said cords to the elastomeric material to be reinforced thereby.
Claim 58
Dependent Claim
462 words
A high soft stretch tape of reinforcing cord for a molded elastomeric article intended to undergo an expansion of at least about 20% after incorporation of the tape therein, comprising: I. a first subtape including A. a plurality of reinforcing cords disposed in side by side relation, 1. each of said cords having a respective multiplicity of substantially identical undulations therein 2. which in any given straight length of said first subtape are substantially planar and both substantially parallel to and out of lateral alignment with the undulations of each next adjacent cord, with the plane of said undulations in each cord being substantially perpendicular to the two parallel planes which are tangent, respectively, to the top and bottom peaks of said cords, e. whereby said first subtape can be elongated, without any stretching of said cords, by straightening of the latter to remove said undulations therefrom, and B. relatively weak tying means 1. acting on said cords and 2. releasably holding the same in the undulating states and relative positions thereof, 3. said tying means being constructed a. to hold said cords against straightening out under moderate forces such as are applied to said first subtape in normal handling thereof b. but to yield and permit said cords to straighten out under appreciably higher forces such as are applied to said first subtape when the same is incorporated in said article and the latter undergoes an expansion; Ii. and at least one additional substantially identical subtape disposed in side by side relation with said first subtape, A. the planes of said undulations of said cords of each additional subtape being substantially parallel to the planes of said undulations of said cords of said first subtape, B. at least one of each two adjacent subtapes being provided on the side cord thereof abutting against the other of such two adjacent subtapes with a coating of a tacky substance to enable such subtapes to adhere to one another so as to form a composite tape having a higher number of component cords, and C. said undulations in each of said abutting side cords being out of lateral alignment with the undulations of the other of said abutting side cords; Iii. the magnitude of said undulations of said cords in each subtape being predetermined to provide a composite tape strength ratio, defined as the ratio of the length of each unstretched cord when fully straight to the length of the composite tape when said cords are undulated, which is at least about 1.2 and no greater than substantially equal to the expansion ratio of said article, defined as the ratio of a given dimension of said article after the same is expanded to the corresponding dimension of said article before the same is expanded.
Claim 59
Dependent Claim
462 words
A high soft stretch tape of reinforcing cord for a molded elastomeric article intended to undergo an expansion of at least about 20% after incorporation of the tape therein, comprising: I. a first subtape including A. a plurality of reinforcing cords disposed in side by side relation, 1. each of said cords having a respective multiplicity of substantially identical undulations therein 2. which in any given straight length of said first subtape are substantially planar and both substantially parallel to and out of lateral alignment with the undulations of each next adjacent cord, with the plane of said undulations in each cord being substantially perpendicular to the two parallel planes which are tangent, respectively, to the top and bottom peaks of said cords, e. whereby said first subtape can be elongated, without any stretching of said cords, by straightening of the latter to remove said undulations therefrom, and B. relatively weak tying means 1. acting on said cords and 2. releasably holding the same in the undulating states and relative positions thereof, 3. said tying means being constructed a. to hold said cords against straightening out under moderate forces such as are applied to said first subtape in normal handling thereof b. but to yield and permit said cords to straighten out under appreciably higher forces such as are applied to said first subtape when the same is incorporated in said article and the latter undergoes an expansion; Ii. and at least one additional substantially identical subtape disposed in side by side relation with said first subtape, A. the planes of said undulations of said cords of each additional subtape being substantially parallel to the planes of said undulations of said cords of said first subtape, B. at least one of each two adjacent subtapes being provided on the side cord thereof abutting against the other of such two adjacent subtapes with a coating of a tacky substance to enable such subtapes to adhere to one another so as to form a composite tape having a higher number of component cords, and C. said undulations in each of said abutting side cords being out of lateral alignment with the undulations of the other of said abutting side cords; Iii. the magnitude of said undulations of said cords in each subtape being predetermined to provide a composite tape strength ratio, defined as the ratio of the length of each unstretched cord when fully straight to the length of the composite tape when said cords are undulated, which is at least about 1.2 and no greater than substantially equal to the expansion ratio of said article, defined as the ratio of a given dimension of said article after the same is expanded to the corresponding dimension of said article before the same is expanded.
Claim 60
Dependent Claim
44 words
A tape according to claim 57, each of said cords in each subtape being at full strength throughout its length, and said strength ratio of the composite tape additionally being no smaller than said expansion ratio less the elastic strain capability of said cords.
Claim 61
Dependent Claim
39 words
A tape according to claim 57, wherein said composite tape at at least one end thereof is effectively skived across its width at an angle of between about 3° and about 30° to the longitudinal dimension of the tape.
Claim 62
Dependent Claim
50 words
A tape according to claim 57, said tying means in each subtape comprising a frangible stitching yarn defining a series of loops coextensive with the length of that subtape, each of said loops embracing a respective set of laterally adjacent portions of said cords in that subtape at said undulations.
Claim 63
Dependent Claim
134 words
A tape according to claim 57, said undulations being generally sinusoidal, said tying means in each subtape comprising a frangible stitching yarn warp-knitted in a 1-0/0-1 pattern into a chain stitch formation of loops coextensive with the length of that subtape, each of said loops embracing a respective laid-in set of laterally adjacent portions of said cords in that subtape at the regions of intersection of said undulations, and each subtape further comprising a frangible stabilizing yarn extending longitudinally of that subtape in an almost straight condition, respective portions of said stabilizing yarn being embraced by said loops jointly with the laterally adjacent portions of said cords, the strength of said stabilizing yarn being sufficient to prevent a premature opening of said loops under said moderate forces but insufficient to withstand said higher forces.
Claim 64
Dependent Claim
25 words
A tape according to claim 61, wherein each of said cords in each subtape has an individual coating of rubber thereon over its entire length.
Claim 65
Dependent Claim
39 words
A tape according to claim 61, wherein said composite tape at at least one end thereof is effectively skived across its width at an angle of between about 3° and about 30° to the longitudinal dimension of the tape.
Claim 66
Dependent Claim
41 words
A tape according to claim 61, each of said cords being at full strength throughout its length, and said stretch ratio of the composite tape additionally being no smaller than said expansion ratio less the elastic strain capability of said cords.
Claim 67
Dependent Claim
28 words
A tape according to claim 57, wherein each of said cords has a body made of a material selected from the group consisting of metallic and non-metallic fibers.
Claim 68
Dependent Claim
25 words
A tape according to claim 65, wherein each of said cords has an individual coating of rubber on said body over the entire length thereof.
Claim 69
Dependent Claim
12 words
A tape according to claim 65, wherein said cord material is rayon.
Claim 70
Dependent Claim
12 words
A tape according to claim 65, wherein said cord material is glass.
Claim 71
Dependent Claim
13 words
A tape according to claim 65, wherein said cord material is metal wire.
Claim 72
Dependent Claim
12 words
A tape according to claim 65, wherein said cord material is nylon.
Claim 73
Dependent Claim
12 words
A tape according to claim 65, wherein said cord material is polyester.
Claim 74
Dependent Claim
20 words
A tape according to claim 57, wherein said stretch ratio of said tape is between about 1.2 and about 4.
Claim 75
Dependent Claim
20 words
A tape according to claim 57, wherein said stretch ratio of said tape is between about 1.5 and about 1.9.
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |