Patent US3729919A successfully refreshed from Google Patents.
US3729919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drag rope for submarine measuring equipment
Assignee: KM Kabelmetal AG
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Filing: 1970-11-13
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Granted: 1973-05-01
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Expires: 1990-11-13
Abstract
Abstract A multi-layer drag rope for submarine measuring cables having plural layers of polyurethane and polyamide mesh, with solid or hollow core.
Inventors
- 👤 H Weichardt
- 👤 F Glander
- 👤 G Ziemek
- 👤 W Schuppe
- 👤 H Meyer
- 👤 B Eilhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/18; H01B7/182; D; D07; D07B; D07B1/00; D07B1/12; D07B1/16; D07B1/162; B; B63; B63B; B63B21/00; B63B21/56; B63B21/66; D07B2501/00; D07B2501/20; D07B2501/2061
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
15 words
Rope as in claim 1, the rope comprised of plural layers of polyurethane and polyamide.
Claim 2
Dependent Claim
19 words
Rope as in claim 1, there being plural support elements provided in the hollow core, along the extension thereof.
Claim 3
Dependent Claim
18 words
Rope as in claim 3, comprised of four polyurethane layers and two polyamide mesh layers embedded in between.
Claim 4
Dependent Claim
16 words
Rope as in claim 1, the connecting lines disposed in the interior of the hollow core.
Claim 5
Dependent Claim
15 words
Rope as in claim 1, the rope including at least one layer of polyamide mesh.
Claim 6
Dependent Claim
67 words
Drag rope for submarine measuring cable to be connected to a towing vessel and provided as support of a connecting line running between the vessel and the measuring cable, comprised of a plurality of concentrically superimposed layers of elastic, resiliently extendable plastic material having high tensile strength, the connecting line being helically wound on the rope, spacing between the helical windings being filled with semirigid polyurethane foam.
Claim 7
Dependent Claim
57 words
Drag rope for submarine measuring cable to be connected to a towing vessel and provided as support of a connecting line or lines running between the vessel and the measuring cable, comprised of a plurality of concentrically superimposed layers of elastic, resiliently extendable plastic material having high tensile strength, at least one layer being a polyamide mesh.
Claim 8
Dependent Claim
21 words
Rope as in claim 8, having a polyurethane core, a mesh of polyamide on the core, and an outer polyurethane jacket.
Claim 9
Dependent Claim
16 words
Rope as in claim 8, comprised of a polyamide rope as core with a polyurethane lining.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |