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US3893642A Expired / Lapsed US ⏱️ 0.0 years remaining

Polyethylene terephthalate plastic coated wire

Assignee: Bekaert NV SA
•
Filing: 1973-02-28
•
Granted: 1975-07-08
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Expires: 1993-02-28
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Abstract

Abstract An improved process for manufacturing plastic coated wire which comprises heating the wire to be coated to an elevated temperature, passing the heated wire through an extrusion zone maintained at an elevated temperature and pressure in which a polyester plastic in molten condition is coated on the heated wire, and cooling the plastic coated wire at a rate sufficient to maintain the plastic primarily in the amorphous state. In a preferred embodiment, a steel wire is coated with polyethylene terephthalate in which the coating is at least 95% amorphous and 0.1 to 0.3 mm in thickness. An improved wire product is produced which may be advantageously utlized for the manufacture of barbed wire, wire mesh, wire netting, wire fences and the like.

Inventors

  • 👤 Roger Van Vlaenderen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 22:25
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/15; B29C48/03; B29C48/05; B29C48/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 68 words
AS A ARTICLE OF MANUFACTURING A MECHANICALLY PROCESSED WIRE PRODUCT COMPRISING BARBED WIRE, WIRE FENCE, WIRE MESH, WIRE NETTING OR THE LIKE, MANUFACTURED FROM A STEEL WIRE COATED WITH A COATING OF POLYETHYLENE TEREPHTHALATE WHEREIN SAID POLYETHYLENE TEREPHTHALATE COATING IS AT LEAST 95% AMORPHOUS AND HAS A THICKNESS RANGING FROM ABOUT 0.1 TO 0.3 MM. AND WHEREIN SAID STEEL WIRE HAS A DIAMETER GREATER THAN ABOUT 1 MM.
Claim 2
Dependent Claim 68 words
AS A ARTICLE OF MANUFACTURING A MECHANICALLY PROCESSED WIRE PRODUCT COMPRISING BARBED WIRE, WIRE FENCE, WIRE MESH, WIRE NETTING OR THE LIKE, MANUFACTURED FROM A STEEL WIRE COATED WITH A COATING OF POLYETHYLENE TEREPHTHALATE WHEREIN SAID POLYETHYLENE TEREPHTHALATE COATING IS AT LEAST 95% AMORPHOUS AND HAS A THICKNESS RANGING FROM ABOUT 0.1 TO 0.3 MM. AND WHEREIN SAID STEEL WIRE HAS A DIAMETER GREATER THAN ABOUT 1 MM.
Claim 3
Dependent Claim 16 words
An article of manufacturing according to claim 1 wherein said coating is at least 98% amorphous.

References Cited (Backward Citations)

US2308638A Cited
US2883159A Cited
US3425207A Cited
US3579379A Cited
US3503590A Cited
US3454261A Cited
US3829545A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-07-07 1979-01-06 1979-07-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-07-07 1983-01-06 1983-07-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-07-07 1987-01-06 1987-07-08 $7700.00 Window Closed / Lapsed

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