US3888718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying a dual extrusion over a cable conductor
Assignee: ANACONDA ACQUISITION Co
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Filing: 1973-03-06
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Granted: 1975-06-10
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Expires: 1993-03-06
Abstract
Abstract An apparatus for the detection of holidays in the wall of a coating on a curved elongated surface, such as that of an electrical conductor strand, employs light-transmitting fibers, distributed around the strand, to transmit both the illumination and the reflected light.
Inventors
- 👤 Jr Edwin H Arnaudin
- 👤 Wilbert W Christiansen
- 👤 Jr Robert I Hazelett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:24
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/22; H01B13/24; B; B29; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/25; B29C48/30; B29C48/304; G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/95; G01N21/952; G01R; G01R31/00; G01R31/50; G01R31/58; G01R31/59; H01B13/0026; B29C48/05; B29K; B29K2105/00; B29K2105/06; B29K2105/20; B29L; B29L2031/00; B29L2031/34; B29L2031/3462
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
Apparatus for applying a dual extrusion over a cable conductor comprising: A. first die means continuously extruding a first layer of semiconducting polymeric material over said conductor, B. a first plurality of optical fibers radially disposed around said conductor downstream of said die means, C. means illuminating said conductor through said fibers, D. a second large plurality of optical fibers radially disposed around said conductor so as to receive said illumination reflected from said conductor through any holidays in said coating said second plurality of optical fibers being axially displaced from said first plurality of optical fibers and said first and second pluralities of optical fibers being disposed in a plurality of planes wherein each of said planes is parallel to the conductor axis and includes the conductor axis, E. sensing means communicating with said second plurality of fibers for sensing holidays in said coating, and F. second die means downstream of said fibers for continuously extruding a second layer of polymeric material over said first layer.
Claim 2
Dependent Claim
167 words
Apparatus for applying a dual extrusion over a cable conductor comprising: A. first die means continuously extruding a first layer of semiconducting polymeric material over said conductor, B. a first plurality of optical fibers radially disposed around said conductor downstream of said die means, C. means illuminating said conductor through said fibers, D. a second large plurality of optical fibers radially disposed around said conductor so as to receive said illumination reflected from said conductor through any holidays in said coating said second plurality of optical fibers being axially displaced from said first plurality of optical fibers and said first and second pluralities of optical fibers being disposed in a plurality of planes wherein each of said planes is parallel to the conductor axis and includes the conductor axis, E. sensing means communicating with said second plurality of fibers for sensing holidays in said coating, and F. second die means downstream of said fibers for continuously extruding a second layer of polymeric material over said first layer.
References Cited (Backward Citations)
US2573815A
Cited
US3229199A
Cited
US3453440A
Cited
US3430055A
Cited
US3430057A
Cited
US3504395A
Cited
US3541228A
Cited
US3479446A
Cited
US3541340A
Cited
US3589121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |