Patent US3363889A successfully refreshed from Google Patents.
US3363889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial furnace and oven wall
Assignee: Loftus Engineering Corp
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Filing: 1966-07-21
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Granted: 1968-01-16
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Expires: 1986-07-21
Abstract
No abstract record available.
Inventors
- 👤 Shirley William Clark
- 👤 Carter Chester Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:26
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN AN INDUSTRIAL HEATING FURNACE FOR PREHEATING AND ANNEALING METAL FOR FURTHER PROCESSING, IN COMBINATION A SUITABLY REINFORCED PLATE METAL OUTER WALL HAVING A SUBSTANTIALLY PLANAR INNER FACE, BLOCK INSULATION DISPOSED ABUTTING RELATION OVER THE SAID WALL PLANAR INNER FACE AND ADHESIVELY ATTACHED THERETO, A NON-POROUS FOIL APPLIED OVER THE ENTIRE EXPOSED FACE OF SAID BLOCK INSULATION AND BONDED THERETO, A PLURALITY OF LONGITUDINAL AND VERTICALLY SPACED APERTURES THROUGH SAID FOIL COVERED BLOCK INSULATION AND TERMINATING AT THE INNER FACE OF SAID METAL OUTER WALL, METAL STUD MEMBERS DISPOSED WITHIN SAID APERTURES AND SECURED TO SAID OUTER WALL PLATE AND EXTENDING THEREFROM FOR SUPPORT AND ATTACHMENT OF INNER WALL PLATES,
Claim 2
Dependent Claim
110 words
IN AN INDUSTRIAL HEATING FURNACE FOR PREHEATING AND ANNEALING METAL FOR FURTHER PROCESSING, IN COMBINATION A SUITABLY REINFORCED PLATE METAL OUTER WALL HAVING A SUBSTANTIALLY PLANAR INNER FACE, BLOCK INSULATION DISPOSED ABUTTING RELATION OVER THE SAID WALL PLANAR INNER FACE AND ADHESIVELY ATTACHED THERETO, A NON-POROUS FOIL APPLIED OVER THE ENTIRE EXPOSED FACE OF SAID BLOCK INSULATION AND BONDED THERETO, A PLURALITY OF LONGITUDINAL AND VERTICALLY SPACED APERTURES THROUGH SAID FOIL COVERED BLOCK INSULATION AND TERMINATING AT THE INNER FACE OF SAID METAL OUTER WALL, METAL STUD MEMBERS DISPOSED WITHIN SAID APERTURES AND SECURED TO SAID OUTER WALL PLATE AND EXTENDING THEREFROM FOR SUPPORT AND ATTACHMENT OF INNER WALL PLATES,
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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |