Patent US566432A successfully refreshed from Google Patents.
Patent US3587945A successfully refreshed from Google Patents.
US3587945A
Expired / Lapsed
US
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Supporting mechanism for multiple closures on bottom-dispensing vessels
Assignee: United States Steel Corp
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Filing: 1969-01-16
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Granted: 1971-06-28
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Expires: 1989-01-16
Abstract
Abstract A SUPPORTING MECHANISM FOR SLIDING GATE CLOSURES USED ON BOTTOM-DISPENSING VESSELS WHICH HAVE MORE THAN ONE OUTLET. MECHANISM INCLUDES PIVOTED LEVERS FOR SUPPORTING THE OUTER EDGES OF A PAIR OF GATES AND SPRING-PRESSED YOKES FOR SUPPORTING THE CONFRONTING INNER EDGES. YOKES ARE MORE COMPACT THAN LEVERS FOR SUPPORTING INNER EDGES.
Inventors
- 👤 Joseph H Lanatti
- 👤 James T Shapland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:06
CPC Classifications
C; C21; C21B; C21B3/00; C21B3/04; C21B3/06; C21B3/10; B; B22; B22D; B22D41/00; B22D41/14; B22D41/22; B22D41/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |