US3652250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the treatment or production of flat glass floating on a liquid
Assignee: AGC Glass Europe SA
•
Filing: 1969-10-03
•
Granted: 1972-03-28
•
Expires: 1989-10-03
Abstract
Abstract In the production 26 treatment of flat glass floating on a liquid contained in a tank formed of refractory materials and having a passageway in the refractory material extending from one region of the tank to another some of the liquid is circulated through this passageway from one region of the tank to another in order to control or regulate the distribution of heat within the tank liquid.
Inventors
- 👤 Edgard Brichard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:59
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/18; C03B18/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
39 words
Apparatus according to claim 1 in which the said bore openings formed in the blocks are enlarged at their ends abutting to the said jointure between the blocks, the said sealing ring being positioned in the said enlarged openings.
Claim 2
Dependent Claim
23 words
Apparatus according to claim 1 in which a sealing powder is interposed between the said sealing ring and the faces of said openings.
Claim 3
Dependent Claim
31 words
Apparatus according to claim 1 in which a sealing powder is interposed in the jointure between said blocks and between the said passageway and the inner face of the liquid bath.
Claim 4
Dependent Claim
39 words
Apparatus according to claim 1 in which there is between the said passageway and the bath at least one connection formed by a space between two adjoining blocks of which at least one is provided with one such passageway.
References Cited (Backward Citations)
US3137559A
Cited
US3323890A
Cited
US3438761A
Cited
US3520669A
Cited
US3528794A
Cited
US3127261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |