Patent US5218170A successfully refreshed from Google Patents.
US5218170A
Expired / Lapsed
US
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Elongate body insulated by means of an insulating covering
Assignee: Alcatel Lucent NV
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Filing: 1992-02-21
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Granted: 1993-06-08
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Expires: 2012-02-21
Abstract
Abstract An elongate body insulated by means of an insulating covering, said covering being constituted by a tape (2) made of synthetic material taped around said body (1) and covered in a layer of varnish (11) made of synthetic material, the body being characterized in that the taping is such that there exists a groove (4) between the free edge (5) of any portion of a turn (3) that is not covered by the following turns and the uncovered surface (6) of the preceding turn, the width of said groove (4) lying substantially in the range 0% to 5% of the width of said tape (2) and being strictly greater than zero.
Inventors
- 👤 Jean-Pierre Ferlier
- 👤 Michel Marechal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:40
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/16; H01B13/08; H01B13/0891; H01B7/00; H01B7/02; H01B7/0241; H01B7/025
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
111 words
An elongate body insulated by means of an insulating covering, said covering being constituted by a tape (2) made of synthetic material taped around said body (1) and covered in a layer of varnish (11) made of synthetic material, the body being characterized in that the taping is such that there exists a groove (4) between the free edge (5) of any portion of a turn (3) that is not covered by the following turns and the uncovered surface (6) of the preceding turn, the width of said groove (4) lying substantially in the range 0% to 5% of the width of said tape (2) and being strictly greater than zero.
Claim 2
Dependent Claim
111 words
An elongate body insulated by means of an insulating covering, said covering being constituted by a tape (2) made of synthetic material taped around said body (1) and covered in a layer of varnish (11) made of synthetic material, the body being characterized in that the taping is such that there exists a groove (4) between the free edge (5) of any portion of a turn (3) that is not covered by the following turns and the uncovered surface (6) of the preceding turn, the width of said groove (4) lying substantially in the range 0% to 5% of the width of said tape (2) and being strictly greater than zero.
Claim 3
Dependent Claim
27 words
A body according to claim 1, characterized in that the width of said groove (4) is substantially equal to 1% of the width of said tape (2).
Claim 4
Dependent Claim
25 words
A body according to claim 1, characterized in that said tape (2) is made of PTFE, and in that said varnish is based on PTFE.
Claim 5
Dependent Claim
27 words
A body according to claim 1, characterized in that said tape (2) is made of PTFE, and in that said varnish is an aqueous solution of FEP.
Claim 6
Dependent Claim
35 words
A body according to claim 1, characterized in that said tape (2) is made of polyamide, and in that said varnish is selected from a varnish based on polyurethane and a varnish based on polyamide.
Claim 7
Dependent Claim
31 words
A body according to claim 1, characterized in that said tape (2) is made of polyester, and in that said varnish is selected from a nylon varnish and a polyester varnish.
Claim 8
Dependent Claim
42 words
A body according to claim 1, characterized in that said layer of varnish (11) is deposited by immersion in a bath containing said varnish, followed by heat treatment for eliminating the volatile substances contained in said varnish and for curing said varnish.
Claim 9
Dependent Claim
29 words
A body according to claim 7, characterized in that said varnish contains appropriate wetting agents enabling it to adhere to the surface it covers prior to said heat treatment.
Claim 10
Dependent Claim
14 words
A body according to claim 7, characterized in that said heat treatment is sintering.
Claim 11
Dependent Claim
20 words
A body according to claim 1, characterized in that said layer of varnish (11) is applied by an electrostatic method.
Claim 12
Dependent Claim
21 words
A body according to claim 1, characterized in that said layer of varnish (11) is applied by a fluidized bed method.
Claim 13
Dependent Claim
35 words
A body according to claim 1, characterized in that it is constituted by an electrical conductor insulated by means of said covering, and in that its outside surface is smooth having concentricity greater than 90%.
Claim 14
Dependent Claim
55 words
A body according to claim 1, characterized in that it comprises, coaxially from the inside towards the outside: a central conductor; an intermediate sheath of dielectric material; and an outer conductor; in that it is insulated by means of said covering, and in that it has a smooth outside surface with concentricity greater than 90%.
Claim 15
Dependent Claim
37 words
A body according to claim 1, characterized in that it is constituted by a tube, a pipe, or a duct isolated by means of said covering and having a smooth outside surface with concentricity greater than 90%.
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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) | 1996-06-07 | 1996-12-07 | 1997-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-07 | 2000-12-07 | 2001-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-07 | 2004-12-07 | 2005-06-08 | $7700.00 | Window Closed / Lapsed |