Patent US3696329A successfully refreshed from Google Patents.
US3696329A
Expired / Lapsed
US
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Marine streamer cable
Assignee: Shawcor Ltd
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Filing: 1970-11-12
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Granted: 1972-10-03
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Expires: 1990-11-12
Abstract
Abstract A streamer cable is disclosed that has a plurality of float members inside its outer sheath to add buoyancy and allow the diameter of the cable to be kept to a minimum. The sensors or hydrophones carried by the cable are connected accoustically to the water by a filler having good accoustic properties. The filler is either an elastomeric material cured in place or a high temperature-low viscosity, low temperature-high viscosity, grease-like material. A method of locating the float members for uniform buoyance is also disclosed.
Inventors
- 👤 Gerald D Hazelhurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:09
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/20; G01V1/201; H; H01; H01B; H01B7/00; H01B7/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
40 words
The method of claim 1 in which the outer sheath is refilled with an elastomeric material that is sufficiently fluid when placed therein to displace substantially all of the air therein after which it is cured into a resilient body.
Claim 2
Dependent Claim
20 words
The method of claim 1 in which the sheath is refilled with said high temperature-low viscosity, low temperature-high viscosity material.
Claim 3
Independent Claim
136 words
A method of constructing a streamer cable with substantially uniform buoyance along its length, said cable having spaced sensors and float members enclosed in an outer sheath, comprising assembling the cable with the detectors and float members positioned inside the outer sheath, filling the unoccupied portion of the sheath with a filler material that can be removed therefrom when desired, placing the cable into a body of water to determine if the cable has the desired buoyancy, attaching additional float members to the outside of the cable at any portion deficient in buoyancy until said portion has the desired buoyancy, removing the filler, positioning additional float members in the cable assembly at the desired location, and refilling the outer sheath with the same filler material or one having the same specific gravity as the first filler.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |