US3140334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass manufacture
Assignee: Individual
•
Filing: 1960-10-18
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Granted: 1964-07-07
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Expires: 1980-10-18
Abstract
No abstract record available.
Inventors
- 👤 Penberthy Harvey Larry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:42
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/183; C03B5/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
IN A GLASS FURNACE OF THE CONTINUOUS TYPE HAVING A RAW MATERIAL FEED END, A DISCHARGE END FROM WHICH GLASS WHICH IS TO BE WORKED IS REMOVED AND A PLURALITY OF GLASSIMMERSED ROD-TYPE ELECTRODES CONNECTED TO A POWER SOURCE AND ADAPTED TO HEAT THE GLASS THROUGH JOULE EFFECT, THE IMPROVEMENT COMPRISING: THE ARRANGEMENT OF SAID ELECTRODES IN TWO SPACED ROWS EXTENDING TRANSVERSELY ACROSS THE PATH OF GLASS FLOW; A POWER SOURCE; SAID ELECTRODES BEING CONNECTED TO SAID POWER SOURCE SO AS TO ESTABLISH TRANSVERSE CURRENT FLOW THROUGH SAID GLASS AND BETWEEN ELECTRODES IN EACH OF SAID ROWS AND LONGITUDINAL CURRENT FLOW THROUGH SAID GLASS AND BETWEEN SAID ROWS OF ELECTRODES; THE ELECTRODES IN EACH ROW BEING SPACED FROM ONE ANOTHER A DISTANCE APPROXIMATELY EQUAL TO THE NORMAL DEPTH OF GLASS IN THE FURNACE SO AS TO PERMIT THE FORMATION OF A DOWNWARD CONVECTION CURRENT OF GLASS BETWEEN EACH PAIR OF ADJACENT ELECTRODES IN EACH OF SAID ROWS.
Claim 2
Dependent Claim
157 words
IN A GLASS FURNACE OF THE CONTINUOUS TYPE HAVING A RAW MATERIAL FEED END, A DISCHARGE END FROM WHICH GLASS WHICH IS TO BE WORKED IS REMOVED AND A PLURALITY OF GLASSIMMERSED ROD-TYPE ELECTRODES CONNECTED TO A POWER SOURCE AND ADAPTED TO HEAT THE GLASS THROUGH JOULE EFFECT, THE IMPROVEMENT COMPRISING: THE ARRANGEMENT OF SAID ELECTRODES IN TWO SPACED ROWS EXTENDING TRANSVERSELY ACROSS THE PATH OF GLASS FLOW; A POWER SOURCE; SAID ELECTRODES BEING CONNECTED TO SAID POWER SOURCE SO AS TO ESTABLISH TRANSVERSE CURRENT FLOW THROUGH SAID GLASS AND BETWEEN ELECTRODES IN EACH OF SAID ROWS AND LONGITUDINAL CURRENT FLOW THROUGH SAID GLASS AND BETWEEN SAID ROWS OF ELECTRODES; THE ELECTRODES IN EACH ROW BEING SPACED FROM ONE ANOTHER A DISTANCE APPROXIMATELY EQUAL TO THE NORMAL DEPTH OF GLASS IN THE FURNACE SO AS TO PERMIT THE FORMATION OF A DOWNWARD CONVECTION CURRENT OF GLASS BETWEEN EACH PAIR OF ADJACENT ELECTRODES IN EACH OF SAID ROWS.
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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |