US3338697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous support bed for conveying and heat treating glass sheets
Assignee: Permaglass Inc
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Filing: 1966-09-15
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Granted: 1967-08-29
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Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Harold A Mcmaster
- 👤 Norman C Nitschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:00
CPC Classifications
C; C03; C03B; C03B35/00; C03B35/14; C03B35/22; C03B35/24; C03B23/00; C03B23/02; C03B23/023; C03B23/035; C03B29/00; C03B29/04; C03B29/06; C03B29/08; C03B29/12; C03B35/243; C03B2225/00; C03B2225/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
AN APPARATUS FOR TREATING GLASS SHEET COMPRISING: A FURNACE; A BED SUPPORTED IN SAID FURNACE; MEANS FOR MOVING GLASS SHEET OVER SAID BED; SAID BED INCLUDING AT LEAST ONE CERAMIC BLOCK HAVING A FIRST AND SECOND SURFACES INTERCONNECTED BY A PLURALITY OF SIDES, SAID CERAMIC BEING OF A LOW COEFFICIENT OF THERMAL EXPANSION, A PLURALITY OF DISCRETE DISCHARGE CHANNELS SPACED THROUGHOUT AND COMMUNICATING WITH SAID FIRST SURFACE AND EXTENDING BETWEEN AND THROUGH AT LEAST ONE OF SAID SIDES, AND A FIRST PLURALITY OF DISCRETE INLET PASSAGES EXTENDING THROUGH THE INTERIOR OF SAID BLOCK FROM SAID FIRST SURFACE TO SAID SECOND SURFACE AND BEING SPACED FROM SAID CHANNELS THROUGHOUT SAID FIRST SURFACE; AND MEANS PROVIDING FLUID FLOW TO SAID PASSAGES SO THAT FLUID FLOWS OVER SAID FIRST SURFACE AND OUT SAID CHANNELS FOR SUPPORTING GLASS SHEET ON SAID FLUID OVER SAID BED AS SAID GLASS SHEET IS MOVED OVER SAID BED.
Claim 2
Independent Claim
150 words
AN APPARATUS FOR TREATING GLASS SHEET COMPRISING: A FURNACE; A BED SUPPORTED IN SAID FURNACE; MEANS FOR MOVING GLASS SHEET OVER SAID BED; SAID BED INCLUDING AT LEAST ONE CERAMIC BLOCK HAVING A FIRST AND SECOND SURFACES INTERCONNECTED BY A PLURALITY OF SIDES, SAID CERAMIC BEING OF A LOW COEFFICIENT OF THERMAL EXPANSION, A PLURALITY OF DISCRETE DISCHARGE CHANNELS SPACED THROUGHOUT AND COMMUNICATING WITH SAID FIRST SURFACE AND EXTENDING BETWEEN AND THROUGH AT LEAST ONE OF SAID SIDES, AND A FIRST PLURALITY OF DISCRETE INLET PASSAGES EXTENDING THROUGH THE INTERIOR OF SAID BLOCK FROM SAID FIRST SURFACE TO SAID SECOND SURFACE AND BEING SPACED FROM SAID CHANNELS THROUGHOUT SAID FIRST SURFACE; AND MEANS PROVIDING FLUID FLOW TO SAID PASSAGES SO THAT FLUID FLOWS OVER SAID FIRST SURFACE AND OUT SAID CHANNELS FOR SUPPORTING GLASS SHEET ON SAID FLUID OVER SAID BED AS SAID GLASS SHEET IS MOVED OVER SAID BED.
References Cited (Backward Citations)
US2395727A
Cited
US3223501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |