US4034547A
Expired / Lapsed
US
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Composite cable and method of making the same
Assignee: Individual
•
Filing: 1976-07-06
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Granted: 1977-07-12
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Expires: 1996-07-06
Abstract
Abstract A cable is disclosed having a wire rope jacket and a synthetic compressible core of yarn filaments with a specific tensile strength greater than the members of the jacket and which serve as a reinforcing component for the jacket to provide a cable construction suited for service conditions requiring a strength greater than a conventional steel cable. A method of making cable is set forth which lends itself to economical and dependable manufacture wherein a yarn core is drawn through a closing die in a substantially zero twist parallel arrangement and drawing a plurality of wires through the die in timed relation to passage of the core to be helically laid about the core to form a twisted wire rope jacket.
Inventors
- 👤 August W. Loos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:50
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0673; D07B1/0686; D07B1/005; D07B1/0693; D07B7/00; D07B7/02; D07B7/025; D07B2201/00; D07B2201/20; D07B2201/2047; D07B2201/2052; D07B2201/2055; D07B2201/2056; D07B2201/2067; D07B2201/2068; D07B2201/2071; D07B2201/2073; D07B2201/2074; D07B2205/00; D07B2205/20; D07B2205/2046; D07B2205/205; D07B2207/00; D07B2207/20; D07B2207/209
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
186 words
A cable comprising a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having a high tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket, the core fibers constituting a soft compressible bundle to effect maximum concentration of fibers for a given cross-section and filling interstices between the wirelike members of the metal jacket, the jacket including a plurality of individual wires helically laid in a layer about the core with the wires collectively effecting a hoop tension about the core and applying a compressive force to its outer surface radially inward, the outer surface of the bundle being compressively stressed radially inward in an alternating pattern which uniformly varies axially of the bundle form zones of minimum stress between wires to zone of maximum compressive stress intermediate the zones of minimum stress.
Claim 2
Dependent Claim
186 words
A cable comprising a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having a high tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket, the core fibers constituting a soft compressible bundle to effect maximum concentration of fibers for a given cross-section and filling interstices between the wirelike members of the metal jacket, the jacket including a plurality of individual wires helically laid in a layer about the core with the wires collectively effecting a hoop tension about the core and applying a compressive force to its outer surface radially inward, the outer surface of the bundle being compressively stressed radially inward in an alternating pattern which uniformly varies axially of the bundle form zones of minimum stress between wires to zone of maximum compressive stress intermediate the zones of minimum stress.
Claim 3
Dependent Claim
96 words
A cable comprising a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having high tensile strength to density ratio, the core fibers being in the form of yarn filaments of aromatic polyamide filaments having individual deniers of 1500, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket.
Claim 4
Dependent Claim
96 words
A cable comprising a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having high tensile strength to density ratio, the core fibers being in the form of yarn filaments of aromatic polyamide filaments having individual deniers of 1500, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket.
Claim 5
Dependent Claim
88 words
A cable comprising a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having a high tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket, the core and jacket being movable relative to one another.
Claim 6
Dependent Claim
88 words
A cable comprising a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having a high tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket, the core and jacket being movable relative to one another.
Claim 7
Dependent Claim
102 words
A cable comprising a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having a high tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket, the cabl having a breaking strength exceeding by 20% the breaking strength of a comparable conventional metal cable formed of AISI 302 stainless steel.
Claim 8
Dependent Claim
102 words
A cable comprising a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having a high tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket, the cabl having a breaking strength exceeding by 20% the breaking strength of a comparable conventional metal cable formed of AISI 302 stainless steel.
Claim 9
Dependent Claim
22 words
The cable of claim 4 wherein the cable is about 30% lighter in weight than that of said comparable stainless steel cable.
Claim 10
Dependent Claim
138 words
A composite cable comprising a core and a jacket, the core being formed of a compressible bundle of aromatic polyamide filaments laid in substantially parallel zero twist relation to one another, the jacket being a plurality of wires helically laid in a layer about the core with the wires collectively effecting a hoop tension about the core and compressively engaging the outer surface of the core bundle, the outer surface of the core bundle being compressively stressed radially inward in an alternating pattern which uniformly varies axially of the core from zones of minimum stress between wires to zones of maximum compressive stress intermediate the zones of minimum stress, the core serving as a unitary reinforcing component for the jacket with the core filaments having a specific tensile strength greater than that of the wires of the jacket.
Claim 11
Dependent Claim
138 words
A composite cable comprising a core and a jacket, the core being formed of a compressible bundle of aromatic polyamide filaments laid in substantially parallel zero twist relation to one another, the jacket being a plurality of wires helically laid in a layer about the core with the wires collectively effecting a hoop tension about the core and compressively engaging the outer surface of the core bundle, the outer surface of the core bundle being compressively stressed radially inward in an alternating pattern which uniformly varies axially of the core from zones of minimum stress between wires to zones of maximum compressive stress intermediate the zones of minimum stress, the core serving as a unitary reinforcing component for the jacket with the core filaments having a specific tensile strength greater than that of the wires of the jacket.
Claim 12
Independent Claim
105 words
A method of making a cable comprising the steps of supplying a continuous multifilament yarn to a closing die to serve as a cable core, spinning a plurality of reels of wire about a spin axis extending through the closing die, drawing a wire from each of the reels through the closing die to be helically laid about the core, and pulling the yarn core through the closing die in a substantially zero twist parallel arrangement in timed relation to passage of the wires through the die to form a composite cable having a twisted wire rope jacket surrounding a parallel laid multifilament yarn core.
Claim 13
Independent Claim
105 words
A method of making a cable comprising the steps of supplying a continuous multifilament yarn to a closing die to serve as a cable core, spinning a plurality of reels of wire about a spin axis extending through the closing die, drawing a wire from each of the reels through the closing die to be helically laid about the core, and pulling the yarn core through the closing die in a substantially zero twist parallel arrangement in timed relation to passage of the wires through the die to form a composite cable having a twisted wire rope jacket surrounding a parallel laid multifilament yarn core.
Claim 14
Dependent Claim
36 words
The method of claim 7 wherein the spinning, drawing and pulling steps are simultaneously perfomred with the yarn core being pulled toward the closing die with a revolving motion about the spin axis of the wires.
Claim 15
Dependent Claim
39 words
The method of claim 7 wherein the pulling step is effected by pulling the yarn core filaments under tension and in parallel no twist alignment through a second closing die upstream of the wire reels and the first die.
Claim 16
Dependent Claim
35 words
The method of claim 7 including the additional step of preforming each of the wires to set a predetermined helical twist therein to minimize internal stress, prior to each wire passing through the closing die.
Claim 17
Dependent Claim
91 words
A cable comprising at least one strand having a core and a jacket, the jacket including a plurality of continuous wirelike metal members laid about the core, the core including a bundle of low stretch lightweight continuous synthetic fibers having a high tensile strength to density ratio, the core fibers being in the form of yarn filaments of aromatic polyamide filaments having individual deniers of 1500, the core fibers having a specific tensile strength greater than that of the metal members of the jacket and serving as a reinforcing component therefor.
Claim 18
Dependent Claim
91 words
A cable comprising at least one strand having a core and a jacket, the jacket including a plurality of continuous wirelike metal members laid about the core, the core including a bundle of low stretch lightweight continuous synthetic fibers having a high tensile strength to density ratio, the core fibers being in the form of yarn filaments of aromatic polyamide filaments having individual deniers of 1500, the core fibers having a specific tensile strength greater than that of the metal members of the jacket and serving as a reinforcing component therefor.
Claim 19
Dependent Claim
82 words
A cable comprising at least one strand having a core and a jacket, the jacket including a plurality of continuous wirelike metal members laid about the core, the core including a bundle of low stretch lightweight continuous synthetic fibers having a high tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the metal members of the jacket and serving as a reinforcing component therefor, the core and jacket being movable relative to one another.
Claim 20
Dependent Claim
82 words
A cable comprising at least one strand having a core and a jacket, the jacket including a plurality of continuous wirelike metal members laid about the core, the core including a bundle of low stretch lightweight continuous synthetic fibers having a high tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the metal members of the jacket and serving as a reinforcing component therefor, the core and jacket being movable relative to one another.
Claim 21
Dependent Claim
106 words
A cable comprising at least one strand having a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having ahigh tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket, the strand having a breaking strength exceeding by 20% the breaking strength of a comparable conventional metal strand formed of AISI 302 stainless steel.
Claim 22
Dependent Claim
106 words
A cable comprising at least one strand having a synthetic core and a metal jacket, the jacket being formed of a plurality of continuous wirelike members helically laid in a layer about the core, the core being formed of a bundle of low stretch lightweight continuous fibers having ahigh tensile strength to density ratio, the core fibers having a specific tensile strength greater than that of the members of the metal jacket and serving as a reinforcing component for the metal jacket, the strand having a breaking strength exceeding by 20% the breaking strength of a comparable conventional metal strand formed of AISI 302 stainless steel.
Claim 23
Dependent Claim
22 words
The cable of claim 13 wherein the strand is about 305 lighter in weight than that of said comparable stainless steel strand.
Claim 24
Dependent Claim
143 words
A composite cable comprising at least one strand having a core and a jacket, the core being formed of a compressible bundle of aromatic polyamide filaments laid in substantially parallel zero twist relation to one another, the jacket being a plurality of wires helically laid in a layer about the core with the wires collectively effecting a hoop tension about the core and compressively engaging the outer surface of the core bundle, the outer surface of the core bundle being compressively stressed radially inward in an alternating pattern which uniformly varies axially of the core from zones of minimum stress between wires to zones of maximum compressive stress intermediate the zones of minimum stress, the core serving as a unitary reinforcing component for the jacket with the core filaments having a specific tensile strength greater than that of the wires of the jacket.
Claim 25
Dependent Claim
143 words
A composite cable comprising at least one strand having a core and a jacket, the core being formed of a compressible bundle of aromatic polyamide filaments laid in substantially parallel zero twist relation to one another, the jacket being a plurality of wires helically laid in a layer about the core with the wires collectively effecting a hoop tension about the core and compressively engaging the outer surface of the core bundle, the outer surface of the core bundle being compressively stressed radially inward in an alternating pattern which uniformly varies axially of the core from zones of minimum stress between wires to zones of maximum compressive stress intermediate the zones of minimum stress, the core serving as a unitary reinforcing component for the jacket with the core filaments having a specific tensile strength greater than that of the wires of the jacket.
Claim 26
Dependent Claim
21 words
The cable of claim 15 wherein the cable is a multistrand cable comprising at least three of said one strand units.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |