US2520168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fiberizing molten material
Assignee: Johns Manville Corp
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Filing: 1944-09-22
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Granted: 1950-08-29
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Expires: 1964-09-22
Abstract
No abstract record available.
Inventors
- 👤 Edward R Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:57
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; C; C03; C03B; C03B37/00; C03B37/01; C03B37/04; C03B37/05; C03B37/055; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN AN APPARATUS FOR CONVERTING A MOLTEN, RAW MATERIAL TO FIBROUS FORM HAVING MEANS FOR DISCHARGING A CONCENTRATED STREAM OF THE MATERIAL, A DISTRIBUTOR ROLL INCLUDING A PERIPHERAL SURFACE, MEANS FOR ROTATING SAID ROLL IN A GIVEN DIRECTION, SAID ROLL BEING LOCATED WITH THE DOWN TURNING SEGMENT OF ITS PERIPHERAL SURFACE IN THE PATH OF THE STREAM WHEREBY THE ROLL BREAKS UP THE CONCENTRATED STREAM AND PROJECTS THE MOLTEN MATERIAL GENERALLY OUTWARDLY AND DOWNWARDLY IN DISTRIBUTED FORMATION, ROTORS HAVING HEAT-RESISTANT, PERIPHERAL SURFACES, MEANS LOCATING SAID ROTORS TO HAVE THEIR PERIPHERAL SURFACES INTERCEPTING THE PATH OF THE MATERIAL DISCHARGED BY SAID DISTRIBUTOR ROLL, MEANS FOR ROTATING SAID ROTORS, AND MEANS ON THE SURFACES OF SAID ROTORS FOR RETAINING ANNULAR RINGS OF THE MOLTEN MATERIAL THEREON.
Claim 2
Dependent Claim
124 words
IN AN APPARATUS FOR CONVERTING A MOLTEN, RAW MATERIAL TO FIBROUS FORM HAVING MEANS FOR DISCHARGING A CONCENTRATED STREAM OF THE MATERIAL, A DISTRIBUTOR ROLL INCLUDING A PERIPHERAL SURFACE, MEANS FOR ROTATING SAID ROLL IN A GIVEN DIRECTION, SAID ROLL BEING LOCATED WITH THE DOWN TURNING SEGMENT OF ITS PERIPHERAL SURFACE IN THE PATH OF THE STREAM WHEREBY THE ROLL BREAKS UP THE CONCENTRATED STREAM AND PROJECTS THE MOLTEN MATERIAL GENERALLY OUTWARDLY AND DOWNWARDLY IN DISTRIBUTED FORMATION, ROTORS HAVING HEAT-RESISTANT, PERIPHERAL SURFACES, MEANS LOCATING SAID ROTORS TO HAVE THEIR PERIPHERAL SURFACES INTERCEPTING THE PATH OF THE MATERIAL DISCHARGED BY SAID DISTRIBUTOR ROLL, MEANS FOR ROTATING SAID ROTORS, AND MEANS ON THE SURFACES OF SAID ROTORS FOR RETAINING ANNULAR RINGS OF THE MOLTEN MATERIAL THEREON.
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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) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |