US3716223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load support diffuser and method of manufacture
Assignee: Individual
•
Filing: 1971-02-10
•
Granted: 1973-02-13
•
Expires: 1991-02-10
Abstract
Abstract THERE IS DISCLOSED HEREIN A LOAD SUPPORT DIFFUSER ADAPTED TO SUPPORT A VERTICAL STACK OF COILS IN AN ANNEALING FURNACE AND DIFFUSE A PROTECTIVE ATMOSPHERE GAS WITHIN SAID FURNACE, THE DIFFUSER COMPRISING A FLAT CIRCULAR BASE PLATE, VSHAPED FLOW DIVIDER MEMBERS MOUNTED ON TOP OF THE PLATE AND HAVING THE APICES THEREOF DIRECTED INWARDLY TO DEFINE A CENTRAL FLOW PASSAGES, DEFLECTORS FOR DIFFUSING THE GAS UPDIRECTED FLOW PASSAGES, DEFLECTORS FOR DIFFUSING THE GAS UPWARDLY AT THE OUTER ENDS OF THE FLOW PASSAGES, AND A DOUBLE LAYER OF OPPOSITELY SKEWED SUPPORT BARS CARRIED BY THE FLOW DIVIDER MEMBERS. D R A W I N G
Inventors
- 👤 R Corbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:59
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/663; C21D9/673
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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |