Apparatus for producing solid electrical insulators
Abstract
Abstract THE CONTINUOUS PRODUCTION OF LAMINATED SECTIONS OF GENERAL CYLINDRICAL FORMATION HAVING EXCELLENT MECHANICAL AND ELECTRICAL PROPERTIES TO RENDER THEM ESPECIALLY ADAPTED FOR USE AS INSULATORS IN ELECTRICAL TRANSMISSION NETWORKS, AND COMPRISING A CENTRAL CORE OF CELLULAR PLASTIC FOAM SHEATHED BY ONE OR MORE LAYERS OF RESIN REENFORCED WITH RESIN-IMPREGNATED GLASS FILAMENTS EXTENDING LONGITUDINALLY AND CIRCUMFERENTIALLY AS WELL AS BY AN OUTER RELATIVELY THICK COVERING LAYER OF RESIN, WITH OR WITHOUT FILLERS, WHICH IS MOLDED BEFORE HARDENING WITH A SMOOTH CYLINDRICAL, FLUTED OR FINNED OUTER SURFACE. THE INVENTION CONTEMPLATES THE INCLUSION OF ANCHORING SOCKETS AT PREDETERMINED SPACINGS ALONG THE CENTRAL CORE, WHICH, UPON SEVERANCE INTO INDIVIDUAL UNITS, SEVERE FOR THE SEALING THEREIN OF SUPPORTING DEVICES FOR THE UNITS.
Inventors
- 👤 A Kaczerginski
Bibliographic Details
Claims Analysis
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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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |