Patent US2742276A successfully refreshed from Google Patents.
US2742276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcining apparatus for producing lime or the like
Assignee: Azbe Corp
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Filing: 1953-04-08
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Granted: 1956-04-17
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Expires: 1973-04-08
Abstract
No abstract record available.
Inventors
- 👤 Victor J Azbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:28
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
CALCINING APPARATUS WHEREIN AN UPRIGHT KILN HAVING A GAS INLET, AND A GAS PRODUCER HAVING A GAS OUTLET, ARE CONNECTED BETWEEN SAID OUTLET AND INLET; COMPRISING A LOWER AIR INLET MEANS AND AIR EXIT MEANS IN THE KILN, THE LATTER BEING LOCATED BETWEEN THE AIR INLET MEANS AND SAID GAS INLET, A FIRST BRANCH FROM SAID AIR EXIT MEANS ADAPTED TO REINTRODUCE SOME OF THE EXIT AIR TO THE KILN AT A REDELIVERY POINT BEYOND SAID GAS INLET, A CO2 GAS RECIRCUTATION EXIT FROM THE KILN BEYOND SAID REDELIVERY POINT, MEANS CONNECTING SAID RECIRCULTAION EXIT WITH THE GAS PRODUCER BELOW ITS FUEL BED, AND A SECOND BRANCH FROM SAID AIR EXIT MEANS ADAPTED TO DELIVER AIR FROM SAID AIR EXIT MEANS TO SAID RECIRCULATION EXIT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |