US3236616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing curled fibers
Assignee: Owens Corning
•
Filing: 1961-07-24
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Granted: 1966-02-22
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Expires: 1981-07-24
Abstract
No abstract record available.
Inventors
- 👤 Charles J Stalego
- 👤 Harold E Leaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:32
CPC Classifications
D; D04; D04H; D04H1/00; C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/022; C03B37/06; D02; D02G; D02G1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR PRODUCING CURLY FIBERS OF HEAT SOFTENABLE MINERAL MATERIAL COMPRISING SUPPLYING MOLTEN FIBER FORMING MATERIAL IN THE FORM OF STREAMS FROM AN ORIFICED FEEDER, ENGAGING SAID MOLTEN STREAMS AND ATTENUATING THEM INTO FIBERS WITH GASEOUS BLASTS OF A BLOWER BELOW SAID FEEDER, MOVING SAID FIBERS AND THE GASES OF SAID BLASTS AGAINST A HARD DEFLECTION SURFACE DIPOSED IN THEIR PATH, CONTROLLING THE TEMPERATURE OF SAID STREAMS AND CORRESPONDINGLY THE VISCOSITY OF SAID STREAMS SO THAT WHEN SAID FIBERS REACH SAID DEFLECTION SURFACE THEY ARE IN A SEMISOLID CONDITION WHEREUPON THE REDIRECTIONING OF THE GASES AT SAID SURFACE AND THE DEFLECTION OF FIBERS THEREFROM IMPARTS A CURLED CONDITION TO SAID SEMI-SOLID FIBERS, AND THEN SOLIDIFYING SAID CURLED FIBERS.
Claim 2
Dependent Claim
119 words
A PROCESS FOR PRODUCING CURLY FIBERS OF HEAT SOFTENABLE MINERAL MATERIAL COMPRISING SUPPLYING MOLTEN FIBER FORMING MATERIAL IN THE FORM OF STREAMS FROM AN ORIFICED FEEDER, ENGAGING SAID MOLTEN STREAMS AND ATTENUATING THEM INTO FIBERS WITH GASEOUS BLASTS OF A BLOWER BELOW SAID FEEDER, MOVING SAID FIBERS AND THE GASES OF SAID BLASTS AGAINST A HARD DEFLECTION SURFACE DIPOSED IN THEIR PATH, CONTROLLING THE TEMPERATURE OF SAID STREAMS AND CORRESPONDINGLY THE VISCOSITY OF SAID STREAMS SO THAT WHEN SAID FIBERS REACH SAID DEFLECTION SURFACE THEY ARE IN A SEMISOLID CONDITION WHEREUPON THE REDIRECTIONING OF THE GASES AT SAID SURFACE AND THE DEFLECTION OF FIBERS THEREFROM IMPARTS A CURLED CONDITION TO SAID SEMI-SOLID FIBERS, AND THEN SOLIDIFYING SAID CURLED FIBERS.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |