US3174729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass stirring mechanism
Assignee: Bausch and Lomb Inc
•
Filing: 1961-09-06
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Granted: 1965-03-23
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Expires: 1981-09-06
Abstract
No abstract record available.
Inventors
- 👤 Charles F Cala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:16
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/90; B01F27/902; C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/187; C03B5/1875
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
GLASS STIRRING APPARATUS COMPRISING A VERTICALLY DISPOSED ELONGATED CYLINDRICAL CHAMBER, AN INLET ADJACENT THE TOP THEREOF, AN OUTLET AT THE LOWER END OF THE CHAMBER, A DRIVE SHAFT ROTATABLY SUPPORTED ABOVE SAID INLET AND PROJECTING AXIALLY AND DOWNWARDLY INTO SAID CHAMBER, STIRRING MEANS DISPOSED IN AXIALLY SPACED RELATION WITHIN SAID CHAMBER AND ROTATABLY DRIVEN BY SAID SHAFT FOR STIRRING AND HOMOGENIZING MOLTEN GLASS DISPOSED WITHIN SAID CHAMBER, AND MEANS DISPOSED AT THE BOTTOM OF THE CHAMBER ABOVE SAID OUTLET AND BELOW THE LOWER END OF SAID SHAFT FOR SEVERING THE MOLTEN MASS OF GLASS WITHIN THE CHAMBER FROM THE GLASS WITHIN SAID OUTLET AND THEREBY BEING EFFECTIVE TO MINIMIZE THE FORMATION OF STRIAE IN THE MOLTEN GLASS LEAVING SAID OUTLET.
Claim 2
Dependent Claim
120 words
GLASS STIRRING APPARATUS COMPRISING A VERTICALLY DISPOSED ELONGATED CYLINDRICAL CHAMBER, AN INLET ADJACENT THE TOP THEREOF, AN OUTLET AT THE LOWER END OF THE CHAMBER, A DRIVE SHAFT ROTATABLY SUPPORTED ABOVE SAID INLET AND PROJECTING AXIALLY AND DOWNWARDLY INTO SAID CHAMBER, STIRRING MEANS DISPOSED IN AXIALLY SPACED RELATION WITHIN SAID CHAMBER AND ROTATABLY DRIVEN BY SAID SHAFT FOR STIRRING AND HOMOGENIZING MOLTEN GLASS DISPOSED WITHIN SAID CHAMBER, AND MEANS DISPOSED AT THE BOTTOM OF THE CHAMBER ABOVE SAID OUTLET AND BELOW THE LOWER END OF SAID SHAFT FOR SEVERING THE MOLTEN MASS OF GLASS WITHIN THE CHAMBER FROM THE GLASS WITHIN SAID OUTLET AND THEREBY BEING EFFECTIVE TO MINIMIZE THE FORMATION OF STRIAE IN THE MOLTEN GLASS LEAVING SAID OUTLET.
References Cited (Backward Citations)
US2569459A
Cited
US2891777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |