US3256079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming fibers
Assignee: PPG Industries Inc
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Filing: 1964-10-08
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Granted: 1966-06-14
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Expires: 1984-10-08
Abstract
No abstract record available.
Inventors
- 👤 John K Cochran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:42
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03; B; B65; B65H; B65H54/00; B65H54/02; B65H54/04; B65H54/28; B65H54/2803; B65H54/2836; B65H54/2842; B65H54/2893; B65H55/00; B65H55/04; B65H2403/00; B65H2403/40; B65H2403/47; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/312; B65H2701/3122; Y; Y10; Y10S; Y10S242/00; Y10S242/92
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
A METHOD OF FORMING A GLASS FIBER STRAND WHICH COMPRISES DRAWING A PLURALITY OF INDIVIDUAL GLASS FILAMENTS FROM A SUPPLY OF MOLTEN GLASS, COMBINING THE FILAMENTS INTO A STRAND, WINDING THE STRAND ON A ROTATING CYLINDRICAL SUPPORT IN SUPERIMPOSED PARALLEL LAYERS, TERMINATING EACH LAYER SHORT OF EACH PRECEEDING LAYER AS THE LAYERS ARE FORMED SO THAT EACH SUCCEEDING LAYER IS SHORTER IN LENGTH THAN THE PRECEEDING LAYER, ROTATING THE SUPPORT AT A CONSTANT ANGULAR VELOCITY DURING THE FIBER FORMING PROCESS, AND INCREASING THE FLUIDITY OF THE MOLTEN GLASS BEING DRAWN INTO FIBERS AFTER THE END OF EACH LAYER IS COMPLETED AND BEFORE THE NEXT SUCCEEDING LAYER IS BEGUN AND IN RESPONSE TO THE LENGTH OF EACH SAID LAYER.
Claim 2
Independent Claim
118 words
A METHOD OF FORMING A GLASS FIBER STRAND WHICH COMPRISES DRAWING A PLURALITY OF INDIVIDUAL GLASS FILAMENTS FROM A SUPPLY OF MOLTEN GLASS, COMBINING THE FILAMENTS INTO A STRAND, WINDING THE STRAND ON A ROTATING CYLINDRICAL SUPPORT IN SUPERIMPOSED PARALLEL LAYERS, TERMINATING EACH LAYER SHORT OF EACH PRECEEDING LAYER AS THE LAYERS ARE FORMED SO THAT EACH SUCCEEDING LAYER IS SHORTER IN LENGTH THAN THE PRECEEDING LAYER, ROTATING THE SUPPORT AT A CONSTANT ANGULAR VELOCITY DURING THE FIBER FORMING PROCESS, AND INCREASING THE FLUIDITY OF THE MOLTEN GLASS BEING DRAWN INTO FIBERS AFTER THE END OF EACH LAYER IS COMPLETED AND BEFORE THE NEXT SUCCEEDING LAYER IS BEGUN AND IN RESPONSE TO THE LENGTH OF EACH SAID LAYER.
Claim 3
Dependent Claim
150 words
APPARATUS FOR FORMING A STRAND OF GLASS FIBERS WHICH COMPRISES A CONTAINER FOR HOLDING A SUPPLY OF MOLTEN GLASS AND MEANS FOR DRAWING A PLURALITY OF GLASS FIBERS FROM THE CONTAINER INCLUDING A GUIDE FOR GROUPING THE FIBERS INTO A STRAND, A CYLINCRICAL SUPPORT ONTO WHICH THE STRAND IS WOUND IN A PLURALITY OF SUPERIMPOSED LAYERS, MEANS FOR ROTATING THE SUPPORT, MEANS FOR PROVIDING RECIPROCATING RELATIVE MOTION BETWEEN THE GUIDE AND SUPPORT IN A DIRECTION PARALLEL TO THE AXIS OF THE SUPPORT, MEANS FOR PROGRESSIVELY SHORTENING THE DISTANCE OF THE RECIPROCATORY MOTION DURING THE WINDING PROCESS SO THAT EACH LAYER TERMINATES SHORT OF EACH PRECEDING LAYER AND EACH SUCCEEDING LAYER IS SHORTER IN LENGTH THAN THE PRECEDING LAYER, AND MEANS FOR DECEASING THE ANGULAR VELOCITY OF THE CYLINDRICAL SUPPORT DURING THE WINDING PROCESS AFTER THE END OF EACH SAID LAYER IS COMPLETED AND BEFORE THE NEXT SUCCEEDING LAYER IS BEGUN.
Claim 4
Dependent Claim
150 words
APPARATUS FOR FORMING A STRAND OF GLASS FIBERS WHICH COMPRISES A CONTAINER FOR HOLDING A SUPPLY OF MOLTEN GLASS AND MEANS FOR DRAWING A PLURALITY OF GLASS FIBERS FROM THE CONTAINER INCLUDING A GUIDE FOR GROUPING THE FIBERS INTO A STRAND, A CYLINCRICAL SUPPORT ONTO WHICH THE STRAND IS WOUND IN A PLURALITY OF SUPERIMPOSED LAYERS, MEANS FOR ROTATING THE SUPPORT, MEANS FOR PROVIDING RECIPROCATING RELATIVE MOTION BETWEEN THE GUIDE AND SUPPORT IN A DIRECTION PARALLEL TO THE AXIS OF THE SUPPORT, MEANS FOR PROGRESSIVELY SHORTENING THE DISTANCE OF THE RECIPROCATORY MOTION DURING THE WINDING PROCESS SO THAT EACH LAYER TERMINATES SHORT OF EACH PRECEDING LAYER AND EACH SUCCEEDING LAYER IS SHORTER IN LENGTH THAN THE PRECEDING LAYER, AND MEANS FOR DECEASING THE ANGULAR VELOCITY OF THE CYLINDRICAL SUPPORT DURING THE WINDING PROCESS AFTER THE END OF EACH SAID LAYER IS COMPLETED AND BEFORE THE NEXT SUCCEEDING LAYER IS BEGUN.
References Cited (Backward Citations)
GB774339A
Cited
US3151963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |