Patent US3293013A successfully refreshed from Google Patents.
US3293013A
Expired / Lapsed
US
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Method of and apparatus for feeding a substantially untwisted multifilament strand
Assignee: PPG Industries Inc
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Filing: 1963-11-29
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Granted: 1966-12-20
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Warren W Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:11
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03; B; B65; B65H; B65H51/00; B65H51/02; B65H51/04; B65H51/08; B65H51/10; B65H51/105; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
A METHOD OF PRODUCING GLASS FIBERS FROM A SOURCE OF MOLTEN GLASS FLOWING THROUGH A PLURALITY OF ORIFICES WHICH COMPRISES, GATHERING SAID FIBERS INTO A STRAND, INTRODUCING SAID STRAND BETWEEN AT LEAST TWO OPPOSING FLEXIBLE SURFACES, EACH MOVING IN THE SAME DIRECTION AT SUBSTANTIALLY THE SAME HIGH RATE OF SPEED, SAID FLEXIBLE SURFACES BEING ENGAGED WITH ONE ANOTHER DURING THE ,OVEMENT THEREOF FOR A DISTANCE SUFFICIENT TO IMPART A HIGH VELOCITY TO SAID STRAND ENGAGED WITH SAID FLEXIBLE SURFACES, MOVING AT LEAST ONE OF SAID OPPOSING FLEXIBLE SURFACES AWAY FROM THE OTHER OF SAID SURFACES TO PERMIT SAID STRAND TO REMAIN IN CONTACT WITH A MOVING FLEXIBLE SURFACE, ABROUPTY CHANGING THE DIRECTION OF THE MOVEMENT OF THE FLEXIBLE SURFACE HAVING THE STRAND IN CONTACT THEREWITH AT A POINT ON SAID FLEXIBLE SURFACE WHERE UNTIL THE DIRECTION OF MOVEMENT OF SAID LEAST NAMED FLEXIBLE SURFACE IS AT A SHARP ANGLE TO SAID DIRECTION OF MOVEMENT OF SAID STRAND,
Claim 2
Independent Claim
157 words
A METHOD OF PRODUCING GLASS FIBERS FROM A SOURCE OF MOLTEN GLASS FLOWING THROUGH A PLURALITY OF ORIFICES WHICH COMPRISES, GATHERING SAID FIBERS INTO A STRAND, INTRODUCING SAID STRAND BETWEEN AT LEAST TWO OPPOSING FLEXIBLE SURFACES, EACH MOVING IN THE SAME DIRECTION AT SUBSTANTIALLY THE SAME HIGH RATE OF SPEED, SAID FLEXIBLE SURFACES BEING ENGAGED WITH ONE ANOTHER DURING THE ,OVEMENT THEREOF FOR A DISTANCE SUFFICIENT TO IMPART A HIGH VELOCITY TO SAID STRAND ENGAGED WITH SAID FLEXIBLE SURFACES, MOVING AT LEAST ONE OF SAID OPPOSING FLEXIBLE SURFACES AWAY FROM THE OTHER OF SAID SURFACES TO PERMIT SAID STRAND TO REMAIN IN CONTACT WITH A MOVING FLEXIBLE SURFACE, ABROUPTY CHANGING THE DIRECTION OF THE MOVEMENT OF THE FLEXIBLE SURFACE HAVING THE STRAND IN CONTACT THEREWITH AT A POINT ON SAID FLEXIBLE SURFACE WHERE UNTIL THE DIRECTION OF MOVEMENT OF SAID LEAST NAMED FLEXIBLE SURFACE IS AT A SHARP ANGLE TO SAID DIRECTION OF MOVEMENT OF SAID STRAND,
Claim 3
Dependent Claim
142 words
IN APPATATUS FOR PRODUCING FIBER GLASS WHICH INCLUDES A SOURCE OF MOLTEN GLASS, A FIBER FORMING BUSHING HAVING A PLURALITY OF ORIFICES THROUGH WHICH MOLTEN GLASS FROM SAID SOURCE FLOWS STREAMS AND WHICH STREAMS ARE ATTENUATED INTO FIBERS, AND MEANS TO GATHER SAID FIBERS INTO A STRAND, THE IMPROVEMENT WHICH COMPRISES, A PAIR OF ENDLESS BELTS HAVING SURFACE PORTIONS WHICH ENGAGE ONE ANOTHER AND BETWEEN WHICH THE STRAND IS FED TO BE ENGAGED BY SAID ENGAGING SURFACE PORTIONS, MEANS TO RAPIDLY MOVE SAID BELTS ALONG A PREDETERMINED PATH SO AS TO MOVE SAID ENGAGED STRAND ALONG THE SAME PATH AND TO APPLY ATTENUATING FORCES TO SAID FIBERS, AND A SMOOTH-SURFACED BEARING MEANS TO ABRUPTLY CHANGE THE DIRECTION OF MOVEMENT OF SAID BELT WITH RESPECT TO SAID PREDETERMINED PATH THEREOF AND PERMIT THE STRAND TO CONTINUE TO MOVE GENERALLY ALONG THE SAID PATH.
Claim 4
Dependent Claim
142 words
IN APPATATUS FOR PRODUCING FIBER GLASS WHICH INCLUDES A SOURCE OF MOLTEN GLASS, A FIBER FORMING BUSHING HAVING A PLURALITY OF ORIFICES THROUGH WHICH MOLTEN GLASS FROM SAID SOURCE FLOWS STREAMS AND WHICH STREAMS ARE ATTENUATED INTO FIBERS, AND MEANS TO GATHER SAID FIBERS INTO A STRAND, THE IMPROVEMENT WHICH COMPRISES, A PAIR OF ENDLESS BELTS HAVING SURFACE PORTIONS WHICH ENGAGE ONE ANOTHER AND BETWEEN WHICH THE STRAND IS FED TO BE ENGAGED BY SAID ENGAGING SURFACE PORTIONS, MEANS TO RAPIDLY MOVE SAID BELTS ALONG A PREDETERMINED PATH SO AS TO MOVE SAID ENGAGED STRAND ALONG THE SAME PATH AND TO APPLY ATTENUATING FORCES TO SAID FIBERS, AND A SMOOTH-SURFACED BEARING MEANS TO ABRUPTLY CHANGE THE DIRECTION OF MOVEMENT OF SAID BELT WITH RESPECT TO SAID PREDETERMINED PATH THEREOF AND PERMIT THE STRAND TO CONTINUE TO MOVE GENERALLY ALONG THE SAID PATH.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |