Patent US3740257A successfully refreshed from Google Patents.
US3740257A
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US
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Process and apparatus for dielectric heat drying elastomer coated glass fibers
Assignee: PPG Industries Inc
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Filing: 1971-09-21
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Granted: 1973-06-19
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Expires: 1991-09-21
Abstract
Abstract A METOD AND APPARATUS FOR PREVENTING PARTICLES OF ELASTOMER SOLIDS FROM BEING DEPOSITED ON THE ELECTRODES OF A DIELECTRIC HEATER DURING THE PROCESS OF DIELECTRICALLY DRYING AN AQUEOUS ELASTOMERIC COATING COMPOSITION ON STRANDS OF GLASS FIBERS. A BARRIER OF GLASS CLOTH OR THE LIKE IS DISPOSED BETWEEN THE ELASTOMER COATED GLASS FIBER STRANDS AND THE ELECTRODES OF THE DIELECTRIC HEATER TO PRECLUDE DEPOSITING PARTICLES OF ELASTOMER SOLIDS ON THE ELECTRODES OF THE DIELECTRIC HEATER AND TO THEREBY PRECLUDE AN "ARC-OUT" OF THE DIELECTRIC DRYING PROCESS FROM OCCURRING.
Inventors
- 👤 A Roscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:02
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/32; F26B3/34; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2971
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |