US3232730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing fibers
Assignee: PPG Industries Inc
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Filing: 1962-09-07
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Granted: 1966-02-01
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Expires: 1982-09-07
Abstract
No abstract record available.
Inventors
- 👤 Warren W Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:10
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/0203; C03B37/0213; C03B37/0209
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
A METHOD OF FORMING THERMOPLASTIC FIBERS WHICH COMPRISES DRAWING A PLURALITY OF CONTINUOUS FILAMENTS FROM MOLTEN STREAMS OF THE THERMOPLASTIC MATERIAL PASSING THROUGH ORIFICES IN THE BOTTOM OF A BUSHING AND APPLYING A SUCTION FORCE LESS THAN THE AMBIENT AIR PRESSURE ADJACENT THE ORIFICES TO WITHDRAW HEATED AIR AWAY FROM THE FIBERS IN A DIRECTION TRANSVERSE WITH RESPECT TO THE PATH OF MOVEMENT OF THE FIBERS THEREBY INCREASING THE COOLING RATE OF THE FIBERS.
Claim 2
Independent Claim
74 words
A METHOD OF FORMING THERMOPLASTIC FIBERS WHICH COMPRISES DRAWING A PLURALITY OF CONTINUOUS FILAMENTS FROM MOLTEN STREAMS OF THE THERMOPLASTIC MATERIAL PASSING THROUGH ORIFICES IN THE BOTTOM OF A BUSHING AND APPLYING A SUCTION FORCE LESS THAN THE AMBIENT AIR PRESSURE ADJACENT THE ORIFICES TO WITHDRAW HEATED AIR AWAY FROM THE FIBERS IN A DIRECTION TRANSVERSE WITH RESPECT TO THE PATH OF MOVEMENT OF THE FIBERS THEREBY INCREASING THE COOLING RATE OF THE FIBERS.
Claim 3
Dependent Claim
101 words
IN APPARATUS FOR PRODUCING FILAMENTS OF HEAT SOFTENABLE MATERIAL WHICH INCLUDES A HEATED BUSHING HAVING A PLURALITY OF ORIFICES THERETHROUGH FOR THE PASSAGE OF STREAMS OF SAID MATERIAL TO BE ATTENUATED INTO FILAMENTS, SAID ORIFICES BEING ARRANGED IN ROWS, THE IMPROVEMENT COMPRISING, TUBULAR MEANS HAVING OPENINGS THERETHROUGH LOCATED BENEATH SAID BUSHING AND BETWEEN SOME ADJACENT ROWS OF ORIFICES, AND MEANS CONNECTED TO SAID TUBULAR MEANS FOR APPLYING A SUCTION FORCE LESS THAN THE AMBIENT AIR PRESSURE THERETO SO AS TO WITHDRAW AIR FROM BENEATH SAID BUSHING AND IN A DIRECTION TRANSVERSE WITH RESPECT TO THE PATH OF MOVEMENT OF THE FILAMENTS.
Claim 4
Dependent Claim
101 words
IN APPARATUS FOR PRODUCING FILAMENTS OF HEAT SOFTENABLE MATERIAL WHICH INCLUDES A HEATED BUSHING HAVING A PLURALITY OF ORIFICES THERETHROUGH FOR THE PASSAGE OF STREAMS OF SAID MATERIAL TO BE ATTENUATED INTO FILAMENTS, SAID ORIFICES BEING ARRANGED IN ROWS, THE IMPROVEMENT COMPRISING, TUBULAR MEANS HAVING OPENINGS THERETHROUGH LOCATED BENEATH SAID BUSHING AND BETWEEN SOME ADJACENT ROWS OF ORIFICES, AND MEANS CONNECTED TO SAID TUBULAR MEANS FOR APPLYING A SUCTION FORCE LESS THAN THE AMBIENT AIR PRESSURE THERETO SO AS TO WITHDRAW AIR FROM BENEATH SAID BUSHING AND IN A DIRECTION TRANSVERSE WITH RESPECT TO THE PATH OF MOVEMENT OF THE FILAMENTS.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |