US3339904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support structure for a water-cooled cupola furnace
Assignee: Raymond Kaiser Engineers Inc
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Filing: 1964-09-17
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Granted: 1967-09-05
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Expires: 1984-09-17
Abstract
No abstract record available.
Inventors
- 👤 Edwin R Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:13
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/10; F27B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METALLUGICAL TYPE CUPOLA COMPRISING: (A) AN UPPER VERTICAL SHELL PORTION; (B) A LOWER VERTICAL SHELL PORTION SUBSTANTIALLY COAXIAL WITH AND SPACED APART FROM SAID UPPER SHELL PORTION; (C) A WATER-JACKETED SHELL PORTION DISPOSED COAXIALLY BETWEEN SAID UPPER AND LOWER SHELL PORTIONS; (D) A PLURALITY OF VERTICAL MEMBERS STRUCTURALLY JOINING TOGETHER SAID UPPER AND LOWER SHELL PORTIONS; (E) MEANS TO FLOW COOLANT INTO AND OUT OF SAID WATERJACKETED SHELL PORTION.
Claim 2
Dependent Claim
70 words
A METALLUGICAL TYPE CUPOLA COMPRISING: (A) AN UPPER VERTICAL SHELL PORTION; (B) A LOWER VERTICAL SHELL PORTION SUBSTANTIALLY COAXIAL WITH AND SPACED APART FROM SAID UPPER SHELL PORTION; (C) A WATER-JACKETED SHELL PORTION DISPOSED COAXIALLY BETWEEN SAID UPPER AND LOWER SHELL PORTIONS; (D) A PLURALITY OF VERTICAL MEMBERS STRUCTURALLY JOINING TOGETHER SAID UPPER AND LOWER SHELL PORTIONS; (E) MEANS TO FLOW COOLANT INTO AND OUT OF SAID WATERJACKETED SHELL PORTION.
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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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |