US4111673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral fiberizing wheel
Assignee: Conwed Corp
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Filing: 1977-10-17
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Granted: 1978-09-05
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Expires: 1997-10-17
Abstract
Abstract A wheel for use in mineral fiberizing processes of the type in which a stream of molten mineral matter is distributed from a rotating wheel is disclosed. The wheel according to the present invention has at least a portion of its surface which contacts the molten mineral matter liquid nitrided to increase wheel life and decrease the frequency of cleaning thereof.
Inventors
- 👤 Cletus L. Van Natta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:22
CPC Classifications
C; C03; C03B; C03B40/00; C03B37/00; C03B37/01; C03B37/04; C03B37/05; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
39 words
In a metal wheel for use in mineral fiberizing processes of the type in which molten mineral is introduced onto the operative surface of the wheel and thereafter tangentially discharged therefrom the improvement comprising said operative surface being nitrided.
Claim 2
Dependent Claim
39 words
In a metal wheel for use in mineral fiberizing processes of the type in which molten mineral is introduced onto the operative surface of the wheel and thereafter tangentially discharged therefrom the improvement comprising said operative surface being nitrided.
Claim 3
Dependent Claim
27 words
A wheel according to claim 1, wherein said surface is concave and further comprising means enclosed at least in part by said surface for cooling said surface.
Claim 4
Dependent Claim
60 words
In a process for fiberizing molten mineral of the type in which molten mineral is introduced onto an operative surface of a rotating metal wheel, tangentially released therefrom in streams, and thereafter contacted by streams of gaseous fluid operative to suddenly and violently change the direction of the mineral streams, the improvement which comprises said operative surface having been nitrided.
Claim 5
Dependent Claim
60 words
In a process for fiberizing molten mineral of the type in which molten mineral is introduced onto an operative surface of a rotating metal wheel, tangentially released therefrom in streams, and thereafter contacted by streams of gaseous fluid operative to suddenly and violently change the direction of the mineral streams, the improvement which comprises said operative surface having been nitrided.
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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |