Patent US3636293A successfully refreshed from Google Patents.
US3636293A
Expired / Lapsed
US
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Method and apparatus for melting vitreous-type materials
Assignee: Chi-Vit Corp
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Filing: 1970-04-15
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Granted: 1972-01-18
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Expires: 1990-04-15
Abstract
Abstract Method and apparatus for melting vitreous-type materials utilizing induction heating in a continuous process. The materials to be melted, in particle or pellet form are supported within an electrically conductive susceptor, and temporarily supported on a refractory support. The heat radiated from the inductively heated susceptor serves to render the pellets fluid whereupon they pass through suitable orifices in the refractory support into a lower chamber where they are held with additional heating for a time sufficient to complete the required timetemperature relationship.
Inventors
- 👤 Harry E Schneider
- 👤 William J Plankenhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:17
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
93 words
The method of melting a vitreous-type material which comprises providing a perforate refractory support in a melting zone and a coaxial holding zone immediately below said melting zone, introducing discrete particles of said material into said melting zone, inductively heating said zone with the particles confined therein to a temperature at which the particles become fluid, discharging the resulting fluid through said refractory support and into said holding zone, heat treating the fluid mass in said holding zone to achieve a predetermined time-temperature relationship, and discharging the heat-treated mass from said holding zone.
Claim 2
Independent Claim
93 words
The method of melting a vitreous-type material which comprises providing a perforate refractory support in a melting zone and a coaxial holding zone immediately below said melting zone, introducing discrete particles of said material into said melting zone, inductively heating said zone with the particles confined therein to a temperature at which the particles become fluid, discharging the resulting fluid through said refractory support and into said holding zone, heat treating the fluid mass in said holding zone to achieve a predetermined time-temperature relationship, and discharging the heat-treated mass from said holding zone.
Claim 3
Dependent Claim
38 words
The method of claim 1 in which said refractory support has spaced apertures therein offset from the center thereof, said apertures being sufficiently small to retain said particles in said melting zone prior to the particles becoming fluid.
Claim 4
Dependent Claim
77 words
A melting apparatus for melting a vitreous-type material comprising a susceptor composed of an electrically conductive material, induction heating means disposed about said susceptor, a baffle extending across said susceptor and dividing said susceptor into an upper melting zone and a lower heat-treating zone, said baffle having apertures therein sufficiently small to retain particles of material to be melted within said melting zone, and discharge means for discharging molten material from the base of said heat-treating zone.
Claim 5
Dependent Claim
77 words
A melting apparatus for melting a vitreous-type material comprising a susceptor composed of an electrically conductive material, induction heating means disposed about said susceptor, a baffle extending across said susceptor and dividing said susceptor into an upper melting zone and a lower heat-treating zone, said baffle having apertures therein sufficiently small to retain particles of material to be melted within said melting zone, and discharge means for discharging molten material from the base of said heat-treating zone.
Claim 6
Dependent Claim
32 words
The apparatus of claim 3 in which said baffle has a plurality of openings spaced from the center thereof and said lower heat-treating zone has a discharge opening at the center thereof.
Claim 7
Dependent Claim
25 words
The apparatus of claim 3 in which said baffle consists of an apertured disc disposed between a pair of refractory sleeves which form the susceptor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |