US3155476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing glass fibers
Assignee: PPG Industries Inc
•
Filing: 1962-01-17
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Granted: 1964-11-03
•
Expires: 1982-01-17
Abstract
No abstract record available.
Inventors
- 👤 Warren W Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:40
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/0203; C03B37/0206; C03B37/0209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN APPARATUS FOR PRODUCING GLASS FIBERS FROM A BODY OF MOLTEN GLASS WHICH INCLUDES A HEATED BUSHING HAVING ORIFICES THEREIN THROUGH WHICH GLASS PASSES AND FORMS CONES OF GLASS AND MEANS FOR DRAWING FIBERS FROM THE GLASS PASSING THROUGH THE ORIFICES, SAID ORIFICES BEING ARRANGED IN ORDERLY ROWS FROM SIDE-TO-SIDE OF THE BUSHING, THE IMPROVEMENT WHICH COMPRISES SUPPLY MEANS FOR A LIQUID, AND MEANS FOR GUIDING AND SUPPORING SAID LIQUID WITH A SURFACE OF THE LIQUID EXPOSED TO THE CONES OF GLASS AND FROM SIDE-TO-SIDE WITH RESPECT TO AND SPACED FROM THE BUSHING, SAID GUIDING AND SUPPORTING MEANS BEING POSITIONED AND EXTENDING BETWEEN ROWS OF ORIFICES OF THE BUSHING.
Claim 2
Dependent Claim
109 words
IN APPARATUS FOR PRODUCING GLASS FIBERS FROM A BODY OF MOLTEN GLASS WHICH INCLUDES A HEATED BUSHING HAVING ORIFICES THEREIN THROUGH WHICH GLASS PASSES AND FORMS CONES OF GLASS AND MEANS FOR DRAWING FIBERS FROM THE GLASS PASSING THROUGH THE ORIFICES, SAID ORIFICES BEING ARRANGED IN ORDERLY ROWS FROM SIDE-TO-SIDE OF THE BUSHING, THE IMPROVEMENT WHICH COMPRISES SUPPLY MEANS FOR A LIQUID, AND MEANS FOR GUIDING AND SUPPORING SAID LIQUID WITH A SURFACE OF THE LIQUID EXPOSED TO THE CONES OF GLASS AND FROM SIDE-TO-SIDE WITH RESPECT TO AND SPACED FROM THE BUSHING, SAID GUIDING AND SUPPORTING MEANS BEING POSITIONED AND EXTENDING BETWEEN ROWS OF ORIFICES OF THE BUSHING.
References Cited (Backward Citations)
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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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |