US3962982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fairings for cables for the towing of an immersed body
Assignee: Government of France
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Filing: 1975-01-28
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Granted: 1976-06-15
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Expires: 1995-01-28
Abstract
Abstract A first fairing element, placed around a tow cable, is truncated along its trailing edge by a bevel which is inclined to the plane of symmetry of the element. Second fairing elements on each side of the first fairing element are also truncated by bevels which are symmetrical to the plane of symmetry of the second fairing element but oppositely inclined. The truncation of the trailing edge of the fairing elements may also be defined by a surface which is symmetrical with respect to the plane of symmetry of the element and has a concavity directed outwards. The truncation may furthermore be defined by a surface perpendicular to axis of symmetry of the fairing element.
Inventors
- 👤 Jean A. R. Marchay
- 👤 Andre Y. C. Lelievre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:17
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/56; B63B21/66; B63B21/663
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
102 words
A new product including a fairing for a cable for towing, by a ship, an object immersed in water, the fairing comprising: a longitudinally profiled wing-shaped body having a leading edge about the cable and a trailing edge which is truncated, said body having a longitudinal plane of symmetry through the axis of the cable, a plurality of watertight cavities near said trailing edge and forming floats, a hollow recess near said leading edge to house means connecting the ship to the object, and a pin having one end imbedded in a bore hole of said body and extending outside said body.
Claim 2
Dependent Claim
102 words
A new product including a fairing for a cable for towing, by a ship, an object immersed in water, the fairing comprising: a longitudinally profiled wing-shaped body having a leading edge about the cable and a trailing edge which is truncated, said body having a longitudinal plane of symmetry through the axis of the cable, a plurality of watertight cavities near said trailing edge and forming floats, a hollow recess near said leading edge to house means connecting the ship to the object, and a pin having one end imbedded in a bore hole of said body and extending outside said body.
Claim 3
Dependent Claim
32 words
A new product according to claim 1, in which the truncation of the trailing edge defines with the lateral faces of the body two sharp edges which are parallel to the cable.
Claim 4
Dependent Claim
27 words
A new product according to claim 2, in which the truncation of the trailing edge is symmetrical with respect to the plane of symmetry of said body.
Claim 5
Dependent Claim
24 words
A new product according to claim 3, in which the truncation of the trailing edge is a bevel perpendicular to the plane of symmetry.
Claim 6
Dependent Claim
31 words
A new product according to claim 3, in which the truncation of the trailing edge is a curved surface having a concavity which is directed towards the outside of the fairing.
Claim 7
Dependent Claim
61 words
A new product according to claim 11, further comprising identical successive fairings representing a longitudinal plane of symmetry and having stops for the pins which limit their mutual deflection, at least some of the fairings having, along the trailing edge, truncations asymmetrical with respect to the plane of symmetry of the fairing, adjacent fairings having trailing edges oppositely and equally asymmetrical.
Claim 8
Dependent Claim
32 words
A new product according to claim 6, wherein said truncations are formed of bevels which are inclined symmetrically and alternately with respect to the longitudinal plane of symmetry of the respective fairings.
Claim 9
Dependent Claim
21 words
A new product according to claim 7, wherein said bevels are bevelled identically and are juxtaposed with the bevels oppositely sloping.
Claim 10
Dependent Claim
45 words
A new product according to claim 1, wherein the fairing is formed of a single continuous deformable body, having the longitudinal plane of symmetry, and the trailing edge includes successive bevels inclined alternately on opposite sides of the plane of symmetry by an equal amount.
Claim 11
Independent Claim
42 words
A method of preparing cable fairings of the type used in towing immersed objects that comprises producing a bevel on each of a number of fairings, and thereafter assembling said fairings on a cable with the bevels of adjacent fairings oppositely inclined.
Claim 12
Independent Claim
42 words
A method of preparing cable fairings of the type used in towing immersed objects that comprises producing a bevel on each of a number of fairings, and thereafter assembling said fairings on a cable with the bevels of adjacent fairings oppositely inclined.
Claim 13
Dependent Claim
13 words
A method according to claim 10 where the step of producing includes sawing.
Claim 14
Dependent Claim
13 words
A method according to claim 10 where the step of producing includes planing.
Claim 15
Dependent Claim
13 words
A method according to claim 10 where the step of producing includes molding.
References Cited (Backward Citations)
US3241513A
Cited
US3712261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |