Patent US3725022A successfully refreshed from Google Patents.
US3725022A
Expired / Lapsed
US
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Method of feeding glass batch
Assignee: OI Glass Inc
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Filing: 1971-02-12
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Granted: 1973-04-03
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Expires: 1991-02-12
Abstract
Abstract METHOD AND APPARATUS FOR CONTROLLABLY AND HOMOGENEOUSLY COMBINING AND CONTROLLABLY FEEDING PRESELECTED AMOUNTS OF A HOMOGENEOUS BLENDED MASS OF LIQUID AND DRY GLASS BATCH MATERIALS INTO A GLASS MELTING FURNACE. THE FOREGOING IS EFFECTED BY THE USE OF A MIXING AND FEEDING DEVICE WHICH EMPLOYS A PADDLE BLADE MIXING AND CONVEYING DEVICE WHICH COMMUNICATES WITH A SCREW CONVEYOR DEVICE IN A COMMON CHAMBER INTO WHICH THE LIQUID AND DRY MATERIALS ARE INDEPENDENTLY INTRODUCED.
Inventors
- 👤 H Mills
- 👤 H Roll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:35
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/24; C03B5/245; B; B01; B01F; B01F27/00; B01F27/60; B01F27/62; B01F33/00; B01F33/80; B01F33/82; B01F35/00; B01F35/20; B01F35/21; B01F35/211; B01F35/2112; B01F35/71; B01F35/717; B01F35/71775; B01F35/71785; B01F35/7179; B01F35/75; B01F35/754; B01F35/75455; B01F35/754551; C03B3/00; C03C; C03C1/00; C03C1/02; C03C1/026; B01F23/00; B01F23/50; B01F23/565; B01F27/05; B01F27/11; B01F27/112; B01F27/114; B01F27/1143; B01F33/50; B01F33/502; B01F35/80
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |