Patent US3215514A successfully refreshed from Google Patents.
US3215514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for producing fibers from thermoplastic material
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1962-05-15
•
Granted: 1965-11-02
•
Expires: 1982-05-15
Abstract
No abstract record available.
Inventors
- 👤 Levecque Marcel
- 👤 Charpentier Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:27
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/04; C03B37/045; C03B37/048
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
141 words
THE METHOD OF MANUFACTURING FINE FIBERS FROM HEATED VISCOUS THERMOPLASTIC MATERIAL, WHICH COMPRISES PROJECTING THE HEATED VISCOUS MATERIAL BY CENTRIFUGAL FORCE FROM THE PERIPHERAL WALL OF A RAPIDLY ROTATING BODY HAVING A PLURALITY OF SUPERPOSED ROWS OF ORIFICES THEREIN THROUGH WHICH THE VISCOUS MATERIAL ISSUES IN FILAMENTARY FORM, AND DIRECTING FLAMES OF LOWER VELOCITY THAN THAT OF THE CENTRIFUGALLY PROJECTED FIBERS AND RANGING UP TO FORTY METERS PER SECOND IN A TANGENTIAL DIRECTION CONINCIDENT WITH THE DIRECTION OF ROTARY MOVEMENT OF THE BODY AND INTO CONTACT WITH THE EXTERNAL PERIPHERAL WALL AND IN ENVELOPING RELATION WITH THE FIBERS ISSUING FROM THE SUPERPOSED ROWS OF ORIFICES TO HEAT ISSUING FROM THE SUPERPOSED ROWS OF ORIFICES TO HEAT UNIFORMLY THE FIBERS AS THEY ISSUE FROM THE ORIFICES AND TO ENHANCE THE ATTENUATION OF THE FIBERS IN CONSEQUENCE OF THEIR ENVELOPMENT BY THE FLAMES.
Claim 2
Independent Claim
141 words
THE METHOD OF MANUFACTURING FINE FIBERS FROM HEATED VISCOUS THERMOPLASTIC MATERIAL, WHICH COMPRISES PROJECTING THE HEATED VISCOUS MATERIAL BY CENTRIFUGAL FORCE FROM THE PERIPHERAL WALL OF A RAPIDLY ROTATING BODY HAVING A PLURALITY OF SUPERPOSED ROWS OF ORIFICES THEREIN THROUGH WHICH THE VISCOUS MATERIAL ISSUES IN FILAMENTARY FORM, AND DIRECTING FLAMES OF LOWER VELOCITY THAN THAT OF THE CENTRIFUGALLY PROJECTED FIBERS AND RANGING UP TO FORTY METERS PER SECOND IN A TANGENTIAL DIRECTION CONINCIDENT WITH THE DIRECTION OF ROTARY MOVEMENT OF THE BODY AND INTO CONTACT WITH THE EXTERNAL PERIPHERAL WALL AND IN ENVELOPING RELATION WITH THE FIBERS ISSUING FROM THE SUPERPOSED ROWS OF ORIFICES TO HEAT ISSUING FROM THE SUPERPOSED ROWS OF ORIFICES TO HEAT UNIFORMLY THE FIBERS AS THEY ISSUE FROM THE ORIFICES AND TO ENHANCE THE ATTENUATION OF THE FIBERS IN CONSEQUENCE OF THEIR ENVELOPMENT BY THE FLAMES.
Claim 3
Dependent Claim
167 words
IN APPARATUS FOR THE MANUFACTURE OF FINE FIBERS FROM VISCOUS MATERIAL, THE COMBINATION OF A CENTRIFUGE BODY HAVING A PERIPHERAL WALL OF SUBSTANTIAL HEIGHT PROVIDED WITH A PLURALITY OF ROWS OF RADIALLY DIRECTED ORIFICES FOR THE DISCHARGE OF VISCOUS MATERIAL FROM AN INTERIOR PART OF SAID BODY UPON THE ROTATION OF SAID BODY AT SUFFICIENT SPEED, MEANS TO ROTATE SAID CENTRIFUGE BODY, AN ANNULAR BURNER ARRANGED IN SPACED RELATION ABOVE THE CENTRIFUGE BODY AND PROVIDED WITH AT LEAST ONE ORIFICE POINTING DOWNWARDLY TOWARDS SAID PERIPHERAL WALL AND TANGENTIALLY THERETO WITH A COMPONENT IN A PLANE PERPENDICULAR TO THE AXIS OF ROTATION OF THE CENTRIFUGE BODY AND IN THE DIRECTION OF SAID ROTATION, TO PROJECT LOW VELCITY FLAMES OR HOT GASES ACTING IN A DOWNWARD DIRECTION AT AN ANGLE TO THE PERIPHERAL WALL OF SAID BODY SO THAT THE FLAME ISSUING FROM SAID ORIFICE SWEEPS SAID PERIPHERAL WALL TANGENTIALLY AND IN THE DIRECTION OF ROTATION THEREOF, AND OUTER ANNULAR BLOWING MEANS DISCHARGING GASES DOWNWARDLY, SURROUNDING SAID ANNULAR BURNER.
Claim 4
Dependent Claim
167 words
IN APPARATUS FOR THE MANUFACTURE OF FINE FIBERS FROM VISCOUS MATERIAL, THE COMBINATION OF A CENTRIFUGE BODY HAVING A PERIPHERAL WALL OF SUBSTANTIAL HEIGHT PROVIDED WITH A PLURALITY OF ROWS OF RADIALLY DIRECTED ORIFICES FOR THE DISCHARGE OF VISCOUS MATERIAL FROM AN INTERIOR PART OF SAID BODY UPON THE ROTATION OF SAID BODY AT SUFFICIENT SPEED, MEANS TO ROTATE SAID CENTRIFUGE BODY, AN ANNULAR BURNER ARRANGED IN SPACED RELATION ABOVE THE CENTRIFUGE BODY AND PROVIDED WITH AT LEAST ONE ORIFICE POINTING DOWNWARDLY TOWARDS SAID PERIPHERAL WALL AND TANGENTIALLY THERETO WITH A COMPONENT IN A PLANE PERPENDICULAR TO THE AXIS OF ROTATION OF THE CENTRIFUGE BODY AND IN THE DIRECTION OF SAID ROTATION, TO PROJECT LOW VELCITY FLAMES OR HOT GASES ACTING IN A DOWNWARD DIRECTION AT AN ANGLE TO THE PERIPHERAL WALL OF SAID BODY SO THAT THE FLAME ISSUING FROM SAID ORIFICE SWEEPS SAID PERIPHERAL WALL TANGENTIALLY AND IN THE DIRECTION OF ROTATION THEREOF, AND OUTER ANNULAR BLOWING MEANS DISCHARGING GASES DOWNWARDLY, SURROUNDING SAID ANNULAR BURNER.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |