US3762145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stranded metallic cord for reinforcing rubber articles
Assignee: Bridgestone Corp
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Filing: 1971-08-02
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Granted: 1973-10-02
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Expires: 1991-08-02
Abstract
Abstract A stranded metallic cord for reinforcing rubber articles, comprising a core strand having a plurality of metallic filaments, and at least two peripheral strands, each consisting of a plurality of twisted metallic filaments, twisted about a core strand, with circumferential spacings. The metallic filaments in each of the core and peripheral strands are so disposed as to cause every filamnnt in the strand come to the periphery of the strand.
Inventors
- 👤 T Fukuda
- 👤 M Kikuchi
- 👤 A Kasahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:18
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0606; D07B1/0613; B; B29; B29D; B29D29/00; B60; B60C; B60C9/00; B60C9/0007; Y; Y10; Y10S; Y10S57/00; Y10S57/902; Y10S57/906
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
104 words
Stranded steel cord having a low bend-recovery rate for reinforcing rubber articles, comprising a core strand extending along the longitudinal axis of the steel cord, said core strand consisting of three steel filaments of identical diameters being twisted in one direction, and four peripheral strands being twisted about the core strand in the opposite direction to the twisting direction of the steel filaments in the core strand, each of the four peripheral strands consisting of three steel filaments having the same diameter as that of the filament in the core strand and being twisted in the same direction as those of the core strand.
Claim 2
Dependent Claim
104 words
Stranded steel cord having a low bend-recovery rate for reinforcing rubber articles, comprising a core strand extending along the longitudinal axis of the steel cord, said core strand consisting of three steel filaments of identical diameters being twisted in one direction, and four peripheral strands being twisted about the core strand in the opposite direction to the twisting direction of the steel filaments in the core strand, each of the four peripheral strands consisting of three steel filaments having the same diameter as that of the filament in the core strand and being twisted in the same direction as those of the core strand.
Claim 3
Dependent Claim
113 words
Stranded metallic cord for reinforcing rubber articles, comprising a core strand extending along the longitudinal axis of the metallic cord, said core strand consisting of a plurality of metallic filaments of identical diameters, the metallic filaments in the core strand all reaching the outer periphery of the strand, and five peripheral strands being twisted about the core strand, the peripheral strands being spaced from each other in the circumferential direction of the cord, each of the peripheral strands consisting of a plurality of metallic filaments of identical diameters, all of the metallic filaments in each of the peripheral strands reaching the outer periphery of the peripheral strand to which the metallic filaments belong.
Claim 4
Dependent Claim
113 words
Stranded metallic cord for reinforcing rubber articles, comprising a core strand extending along the longitudinal axis of the metallic cord, said core strand consisting of a plurality of metallic filaments of identical diameters, the metallic filaments in the core strand all reaching the outer periphery of the strand, and five peripheral strands being twisted about the core strand, the peripheral strands being spaced from each other in the circumferential direction of the cord, each of the peripheral strands consisting of a plurality of metallic filaments of identical diameters, all of the metallic filaments in each of the peripheral strands reaching the outer periphery of the peripheral strand to which the metallic filaments belong.
Claim 5
Dependent Claim
59 words
Stranded metallic core according to claim 2, wherein said core strand is twisted in one direction, and said peripheral strands are twisted about the core strand in the opposite direction to the twisting direction of the metallic filaments in the core strand, each of the peripheral strands is twisted in the same direction as those of the core strand.
Claim 6
Dependent Claim
113 words
Stranded metallic cord for reinforcing rubber articles, comprising a core strand extending along the longitudinal axis of the metallic cord, said core strand consisting of a plurality of metallic filaments of identical diameters, the metallic filaments in the core strand all reaching the outer periphery of the strand, and four peripheral strands being twisted about the core strand, the peripheral strands being spaced from each other in the circumferential direction of the cord, each of the peripheral strands consisting of a plurality of metallic filaments of identical diameters, all of the metallic filaments in each of the peripheral strands reaching the outer periphery of the peripheral strand to which the metallic filaments belong.
Claim 7
Dependent Claim
113 words
Stranded metallic cord for reinforcing rubber articles, comprising a core strand extending along the longitudinal axis of the metallic cord, said core strand consisting of a plurality of metallic filaments of identical diameters, the metallic filaments in the core strand all reaching the outer periphery of the strand, and four peripheral strands being twisted about the core strand, the peripheral strands being spaced from each other in the circumferential direction of the cord, each of the peripheral strands consisting of a plurality of metallic filaments of identical diameters, all of the metallic filaments in each of the peripheral strands reaching the outer periphery of the peripheral strand to which the metallic filaments belong.
Claim 8
Dependent Claim
40 words
Stranded metallic cord according to claim 4, wherein said core strand consists of three metallic filaments of identical diameters and peripheral strands consist of three filaments of the same diameter as that of the metallic filament in the core strand.
Claim 9
Dependent Claim
46 words
Stranded metallic cord according to claim 4, wherein said core strand consists of four metallic filaments of identical diameters, and four peripheral strands are twisted about the core strand with circumferential spacings between adjacent peripheral strands, each of said peripheral strands consisting of three metallic filaments.
Claim 10
Dependent Claim
125 words
Stranded metallic cord for reinforcing rubber articles, comprising a core strand extending along the longitudinal axis of the metallic cord, said core strand consisting of three metallic filaments of identical diameters, the metallic filaments in the core strand all reaching the outer periphery of the strand, and at least two peripheral strands being twisted about the core strand, the peripheral strands being spaced from each other in the circumferential direction of the core, each of the peripheral strands consisting of a plurality of metallic filaments of a diameter smaller than the diameter of the metallic filament in the core strand, all of the metallic filaments in each of the peripheral strands reaching the outer periphery of the peripheral strand to which the metallic filaments belong.
Claim 11
Dependent Claim
125 words
Stranded metallic cord for reinforcing rubber articles, comprising a core strand extending along the longitudinal axis of the metallic cord, said core strand consisting of three metallic filaments of identical diameters, the metallic filaments in the core strand all reaching the outer periphery of the strand, and at least two peripheral strands being twisted about the core strand, the peripheral strands being spaced from each other in the circumferential direction of the core, each of the peripheral strands consisting of a plurality of metallic filaments of a diameter smaller than the diameter of the metallic filament in the core strand, all of the metallic filaments in each of the peripheral strands reaching the outer periphery of the peripheral strand to which the metallic filaments belong.
Claim 12
Dependent Claim
62 words
Stranded metallic core according to claim 7, wherein said core strand consists of three metallic filaments each having a certain diameter, and at least six peripheral strands are twisted about the core strand with circumferential spacing therebetween, each of said peripheral strands consisting of three metallic filaments of a diameter smaller than the diameter of the metallic filament in the core strand.
Claim 13
Dependent Claim
59 words
Stranded metallic cord according to claim 7, wherein said core strand is twisted in one direction, and said peripheral strands are twisted about the core strand in the opposite direction to the twisting direction of the metallic filaments in the core strand, each of the peripheral strands is twisted in the same directIon as those of the core strand.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |