Patent US2987761A successfully refreshed from Google Patents.
US2987761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the production of filaments or fibre from glass
Assignee: Individual
•
Filing: 1958-08-27
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Granted: 1961-06-13
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Expires: 1978-08-27
Abstract
No abstract record available.
Inventors
- 👤 Schuller Werner Hugo Wilhelm
- 👤 Friedrich Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:54
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
IN THE METHOD FOR PRODUCING A MAT OF STAPLE GLASS FIBRES BY DRAWING A PLURALITY OF FILAMENTS OF GLASS FROM A SUPPLY OF MOLTEN GLASS, THE IMPROVEMENT WHICH CONSISTS OF THE STEPS OF DETECTING A DECREASE IN THE NUMBER OF FILAMENTS OF GLASS EMANATING FROM SAID SUPPLY, INTERRUPTING THE DIRECT FEED OF GLASS FILAMENTS TO A STAPLE FIBRE FORMING STEP UPON DETECTION OF A DECREASE IN THE NUMBER OF SAID FILAMENTS, AND DIVERTING SAID FILAMENTS FROM SAID STAPLE FIBRE FORMING STEP.
Claim 2
Dependent Claim
81 words
IN THE METHOD FOR PRODUCING A MAT OF STAPLE GLASS FIBRES BY DRAWING A PLURALITY OF FILAMENTS OF GLASS FROM A SUPPLY OF MOLTEN GLASS, THE IMPROVEMENT WHICH CONSISTS OF THE STEPS OF DETECTING A DECREASE IN THE NUMBER OF FILAMENTS OF GLASS EMANATING FROM SAID SUPPLY, INTERRUPTING THE DIRECT FEED OF GLASS FILAMENTS TO A STAPLE FIBRE FORMING STEP UPON DETECTION OF A DECREASE IN THE NUMBER OF SAID FILAMENTS, AND DIVERTING SAID FILAMENTS FROM SAID STAPLE FIBRE FORMING STEP.
Claim 3
Dependent Claim
111 words
IN AN APPARATUS FOR PRODUCING A MAT OF GLASS FIBRES BY DRAWING A PLURALITY OF FILAMENTS OF GLASS FROM A SUPPLY OF MOLTEN GLASS BY MEANS OF A ROTATING DRUM, WHICH DRUM IN COMBINATION WITH MAIN SCRAPER MEANS FORMS STAPLES FIBRES AND SHOWERS THEM ON A SURFACE, THE COMBINATION WITH SAID APPARATUS OF AN AUXILIARY TAKE OFF MEANS, MEANS SUPPORTING SAID AUXILIARY TAKE OFF MEANS BETWEEN SAID SUPPLY AND SAID MAIN SCRAPER MEANS, AND A DIVERTER ELEMENT ASSOCIATED WITH SAID TAKE OFF MEANS AND SELECTIVELY OPERATIVE TO INTERRUPT THE TRAVEL OF FILAMENTS ON SAID DRUM TO SAID MAIN SCRAPER WHEN LESS THAN THE FULL COMPLEMENT OF FILAMENTS EMANATE FROM SAID SUPPLY.
Claim 4
Dependent Claim
111 words
IN AN APPARATUS FOR PRODUCING A MAT OF GLASS FIBRES BY DRAWING A PLURALITY OF FILAMENTS OF GLASS FROM A SUPPLY OF MOLTEN GLASS BY MEANS OF A ROTATING DRUM, WHICH DRUM IN COMBINATION WITH MAIN SCRAPER MEANS FORMS STAPLES FIBRES AND SHOWERS THEM ON A SURFACE, THE COMBINATION WITH SAID APPARATUS OF AN AUXILIARY TAKE OFF MEANS, MEANS SUPPORTING SAID AUXILIARY TAKE OFF MEANS BETWEEN SAID SUPPLY AND SAID MAIN SCRAPER MEANS, AND A DIVERTER ELEMENT ASSOCIATED WITH SAID TAKE OFF MEANS AND SELECTIVELY OPERATIVE TO INTERRUPT THE TRAVEL OF FILAMENTS ON SAID DRUM TO SAID MAIN SCRAPER WHEN LESS THAN THE FULL COMPLEMENT OF FILAMENTS EMANATE FROM SAID SUPPLY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |