US4019940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing parallel yarn rope
Assignee: Wall Industries Inc
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Filing: 1975-07-25
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Granted: 1977-04-26
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Expires: 1995-07-25
Abstract
Abstract A high-strength parallel yarn rope comprises a series of multi-filament rope yarns which are bounded together in parallel relation along their lengths by a binder distributed only on the surfaces of the yarns to form a flexible rope core. The core is surrounded by a braided jacket, and a flexible layer of water-impervious material adhesively and mechanically bonds the core to the jacket. A method is also disclosed for manufacturing the rope.
Inventors
- 👤 Henry Alexander Hood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:10
CPC Classifications
D; D07; D07B; D07B5/00; D07B1/00; D07B1/02; D07B1/04; D07B2201/00; D07B2201/20; D07B2201/2015; D07B2201/2042; D07B2201/2044; D07B2201/2083; D07B2201/2087; D07B2201/2088; D07B2201/209; D07B2401/00; D07B2401/20; D07B2401/205
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
124 words
A method of making rope, comprising the steps of: advancing lengthwise a plurality of rope yarns each composed of a series of filaments, tensioning said rope yarns as they advance to compact said filaments, coating said rope yarns with a layer of an uncured binder material as said yarns advance under tension to distribute the binder material predominantly on the surface of each rope yarn and to prevent penetration of said binder material deeply into the interior of said rope yarns and among inner ones of the filaments of each rope yarn, joining said yarns together lengthwise in parallel relation to form a core, applying a layer of an uncured binder material on said core, and heating the assembly to cure the binder materials.
Claim 2
Independent Claim
124 words
A method of making rope, comprising the steps of: advancing lengthwise a plurality of rope yarns each composed of a series of filaments, tensioning said rope yarns as they advance to compact said filaments, coating said rope yarns with a layer of an uncured binder material as said yarns advance under tension to distribute the binder material predominantly on the surface of each rope yarn and to prevent penetration of said binder material deeply into the interior of said rope yarns and among inner ones of the filaments of each rope yarn, joining said yarns together lengthwise in parallel relation to form a core, applying a layer of an uncured binder material on said core, and heating the assembly to cure the binder materials.
Claim 3
Dependent Claim
29 words
The method according to claim 1 wherein said layer-applying step includes the step of wrapping a tape of said material helically around said core as the core advances lengthwise.
Claim 4
Dependent Claim
36 words
The method according to claim 2 including the steps of drying said coated yarns prior to said joining step, and braiding a jacket around said core after said wrapping step and prior to said curing step.
Claim 5
Dependent Claim
34 words
The method according to claim 3 including the step of advancing said jacket through a neoprene latex containing about 30%, by weight, of neoprene, and drying the neoprene-coated jacket prior to said curing step.
Claim 6
Dependent Claim
60 words
The method according to claim 3 including the steps of maintaining the temperature in said drying step below the temperature in said curing step and maintaining the temperature in said curing step at a level sufficient to cause said wrapped layer to flow among the braids of the jacket to interlock the jacket to the core while curing the same.
Claim 7
Dependent Claim
62 words
The method according to claim 5 wherein the temperature in said drying step is maintained at about 225° F and said core is subjected to said temperature for about 10 to 20 minutes, and the temperature in said curing step is maintained between about 300° to 350° F. and said assembly subjected to said curing temperature for about 15 to 45 minutes.
Claim 8
Dependent Claim
23 words
The method according to claim 5 including the step of permitting said rope to cool while advancing under tension after said curing step.
Claim 9
Dependent Claim
43 words
The method according to claim 1 including the step of controlling the tension on said yarns during said tensioning step in relation to the temperature in said curing step to prevent said yarns from shrinking more than about 1% in length during manufacture.
Claim 10
Dependent Claim
25 words
A method according to claim 8 including the step of maintaining said tension in excess of about .1 gram per denier during said tension-controlling step.
Claim 11
Dependent Claim
63 words
The method according to claim 1 wherein said tensioning step includes the steps of sensing the longitudinal velocity of said yarns at one location, and automatically controlling the longitudinal velocity of said yarns at another location ahead of said coating step location in response to changes in the velocity sensed at said one location, whereby proper tension on the yarns in accurately maintained.
Claim 12
Dependent Claim
76 words
The method according to claim 10 wherein said velocity sensing step includes the step of converting said velocity into an electrical signal proportional to said velocity, and said automatic control step including the step of regulating the velocity of said yarns at said other location in response to said signal by decreasing the velocity in response to decreases in the sensed yarn velocity and increasing the velocity in response to increases in the sensed yarn velocity.
Claim 13
Dependent Claim
74 words
The method according to claim 11 including the steps of sensing tension on said yarns at said location ahead of said coating step, converting said sensed tension into another electrical signal, and combining said electrical signals to provide an electrical control signal for effecting regulation of said yarn velocity with said control signal having a feedback component provided by the signal produced in said tension-sensing step, whereby accurate yarn tension contrl may be effected.
Claim 14
Dependent Claim
31 words
The method according to claim 1 wherein said coating step includes the step of advancing said yarns through a vat containing a neoprene latex comprising about 20% by weight of neoprene.
Claim 15
Dependent Claim
29 words
The method of claim 1 wherein each of said advancing rope yarns has a slight twist in a range of between about 4 to about 8 turns per foot.
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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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |