Patent US1260927A successfully refreshed from Google Patents.
Patent US3128891A successfully refreshed from Google Patents.
US3128891A
Expired / Lapsed
US
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Cupola charging apparatus
Assignee: —
•
Filing: —
•
Granted: 1964-04-14
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Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:41
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN COMBINATION WITH A CUPOLA CHARGING BUCKET ADAPTED TO BE TRANSPORTED IN AN INCLINED PATH FROM A LOADING AREA TO A CUPOLA, SAID BUCKET HAVING AN UPPER PORTION, HAVING A RELATIVELY SMALL BOTTOM MEMBER, AND HAVING A PLURALITY OF DOORS HINGED TO AND DEPENDING FROM SAID UPPER PORTION, SAID DOORS BEING SWINGABLE FROM A NORMAL HANGING POSITION SPACED LATERALLY FROM SAID BOTTOM MEMBER TO A CLOSED POSITION AGAINST SAID BOTTOM MEMBER, A DOOR-CLOSING APPARATUS COMPRISING: A MOVABLE CARRIAGE POSITIONABLE BELOW SAID CHARGING BUCKET; MEANS ON SAID CARRIAGE ADAPTED TO ENGAGE THE OPEN HANGING DOORS OF THE EMPTY BUCKET AS THE LATTER MOVES DOWNWARDLY AND REARWARDLY ON ITS INCLINED PATH, AND TO URGE SAID DOORS INTO THEIR CLOSED POSITION AGAINST THE BUCKET BOTTOM MEMBER AS SAID CARRIAGE MOVES REARWARDLY WITH SAID DESCENDING
Claim 2
Dependent Claim
131 words
IN COMBINATION WITH A CUPOLA CHARGING BUCKET ADAPTED TO BE TRANSPORTED IN AN INCLINED PATH FROM A LOADING AREA TO A CUPOLA, SAID BUCKET HAVING AN UPPER PORTION, HAVING A RELATIVELY SMALL BOTTOM MEMBER, AND HAVING A PLURALITY OF DOORS HINGED TO AND DEPENDING FROM SAID UPPER PORTION, SAID DOORS BEING SWINGABLE FROM A NORMAL HANGING POSITION SPACED LATERALLY FROM SAID BOTTOM MEMBER TO A CLOSED POSITION AGAINST SAID BOTTOM MEMBER, A DOOR-CLOSING APPARATUS COMPRISING: A MOVABLE CARRIAGE POSITIONABLE BELOW SAID CHARGING BUCKET; MEANS ON SAID CARRIAGE ADAPTED TO ENGAGE THE OPEN HANGING DOORS OF THE EMPTY BUCKET AS THE LATTER MOVES DOWNWARDLY AND REARWARDLY ON ITS INCLINED PATH, AND TO URGE SAID DOORS INTO THEIR CLOSED POSITION AGAINST THE BUCKET BOTTOM MEMBER AS SAID CARRIAGE MOVES REARWARDLY WITH SAID DESCENDING
References Cited (Backward Citations)
US2626828A
Cited
US2602000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |