US3352072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temporary liner flue assembly for repairing masonry stacks
Assignee: United States Steel Corp
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Filing: 1965-04-16
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Granted: 1967-11-14
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Expires: 1985-04-16
Abstract
No abstract record available.
Inventors
- 👤 Claude E Bole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:04
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A TEMPORARY LINER FLUE ASSEMBLY FOR THE TOP PORTION OF A MASONRY STACK WHICH COMPRISES A PLURALITY OF SPACED ELONGATED SUPPORT MEMBERS EXTENDING THROUGH THE WALL OF SAID STACK IMMEDIATELY BELOW SAID TOP PORTION THEREOF, AN ANNULAR SEALING RING REMOVABLY DISPOSED ON SAID SUPPORT MEMBERS AND EXTENDING AROUND THE INNER PERIPHERY OF SAID STACK, AND A CYLINDRICAL SLEEVE REMOVABLY FITTED IN SAID TOP PORTION OF SAID STACK WITH ONE END RESTING ON SAID SEALING RING AND ITS OTHER END PROJECTING UPWARDLY OF SAID STACK.
Claim 2
Dependent Claim
84 words
A TEMPORARY LINER FLUE ASSEMBLY FOR THE TOP PORTION OF A MASONRY STACK WHICH COMPRISES A PLURALITY OF SPACED ELONGATED SUPPORT MEMBERS EXTENDING THROUGH THE WALL OF SAID STACK IMMEDIATELY BELOW SAID TOP PORTION THEREOF, AN ANNULAR SEALING RING REMOVABLY DISPOSED ON SAID SUPPORT MEMBERS AND EXTENDING AROUND THE INNER PERIPHERY OF SAID STACK, AND A CYLINDRICAL SLEEVE REMOVABLY FITTED IN SAID TOP PORTION OF SAID STACK WITH ONE END RESTING ON SAID SEALING RING AND ITS OTHER END PROJECTING UPWARDLY OF SAID STACK.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |