US2500105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making laminated hollow glass articles
Assignee: Hartford Empire Co
•
Filing: 1941-04-23
•
Granted: 1950-03-07
•
Expires: 1961-04-23
Abstract
No abstract record available.
Inventors
- 👤 Walter C Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:19
CPC Classifications
C; C03; C03B; C03B11/00; C03B11/14; C03B7/00; C03B7/08; C03B9/00; C03B9/30; C03B9/31; Y; Y10; Y10S; Y10S220/00; Y10S220/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE METHOD OF MAKING HOLLOW GLASS ARTICLES HAVING LAMINATED WALLS, WHICH COMPRISES DELIVERING A PLURALITY OF STREAMS OF MOLTEN GLASSES OF DIFFERENT COEFFICIENTS OF EXPANSION AT SEPARATED POINTS ON THE SURFACE OF A ROTATING POOL OF GLASS WHEREBY TO CREATE A BODY OF GLASS HAVING SUBSTANTIALLY CONCENTRIC LAYERS OF SUCH DIFFERENT GLASSES, FLOWING THE GLAS FROM THE BOTTOM OF THE POOL THROUGH AN ORIFICE CONCENTRIC WITH SAID AXIS OF ROTATION, SEPARATING THE FLOWING GLASS INTO MOLD CHARGES BY PERIODICALLY SEVERING SIMILAR END PORTIONS THEREFROM AND DELIVERING THEM TO MOLDS OF A FORMING MACHINE, AND MOLDING THE CHARGES BY PRESSURE AND HEAT EXTRACTION TO FORM SIMILAR HOLLOW ARTICLES HAVING WALLS MADE UP OF LAMINATIONS OF GLASS OF DIFFERENT COEFFICIENTS OF EXPANSION.
Claim 2
Independent Claim
120 words
THE METHOD OF MAKING HOLLOW GLASS ARTICLES HAVING LAMINATED WALLS, WHICH COMPRISES DELIVERING A PLURALITY OF STREAMS OF MOLTEN GLASSES OF DIFFERENT COEFFICIENTS OF EXPANSION AT SEPARATED POINTS ON THE SURFACE OF A ROTATING POOL OF GLASS WHEREBY TO CREATE A BODY OF GLASS HAVING SUBSTANTIALLY CONCENTRIC LAYERS OF SUCH DIFFERENT GLASSES, FLOWING THE GLAS FROM THE BOTTOM OF THE POOL THROUGH AN ORIFICE CONCENTRIC WITH SAID AXIS OF ROTATION, SEPARATING THE FLOWING GLASS INTO MOLD CHARGES BY PERIODICALLY SEVERING SIMILAR END PORTIONS THEREFROM AND DELIVERING THEM TO MOLDS OF A FORMING MACHINE, AND MOLDING THE CHARGES BY PRESSURE AND HEAT EXTRACTION TO FORM SIMILAR HOLLOW ARTICLES HAVING WALLS MADE UP OF LAMINATIONS OF GLASS OF DIFFERENT COEFFICIENTS OF EXPANSION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |