US3028623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing a low density mat of glass fibers
Assignee: Johns Manville Fiber Glass Inc
•
Filing: 1958-06-06
•
Granted: 1962-04-10
•
Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
- 👤 Labino Dominick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:02
CPC Classifications
D; D04; D04H; D04H1/00; C; C03; C03B; C03B37/00; C03B37/01; C03B37/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
APPARATUS FOR PRODUCING FINE CURLY GLASS FIBERS COMPRISING, IN COMBINATION: A GLASS MELTING BUSHING HAVING BOTTOM AND SIDE WALLS FOR CONTAINING MOLTEN GLASS, SAID BOTTOM WALL HAVING AN APERTURE THROUGH WHICH MOLTEN GLASS IS DISCHARGED AS A STREAM; AN ENCLOSER IN SPACED RELATION WITH SAID BUSHING AND DEFINING THEREBETWEEN A HEATING CHAMBER TO WHICH HEATING GASES ARE SUPPLIED; AN OUTLET IN THE BOTTOM OF SAID CHAMBER, SAID BUSHING HAVING THE TERMINUS OF SAID APERTURE SUPPORTED ABOVE AND IN AXIAL ALIGNMENT WITH SAID OPENING TO PROVIDE AN UNSUPPORTED AND UNOBSTRUCTED PATH FOR
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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) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |