US3605370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preassembled insulating panels for high temperature furnaces
Assignee: VFR Inc 901 EAST 8TH AVENUE KING OF PRUSSIA PA 19406 A DE CORP
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Filing: 1970-03-23
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Granted: 1971-09-20
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Expires: 1990-03-23
Abstract
Abstract PREASSEMBLED INSULATING PANELS FOR HIGH TEMPERATURE FURNACES HAVING A NONEXPOSED ANCHOR FOR HOT SIDE REFRACTORY MATERIAL. AT LEAST ONE LAYER OF REFRACTORY BLOCK IS FIXED IN ROWS TO A METAL BACKING SO AS TO HAVE TRANSVERSE SPACES BETWEEN ADJACENT ROWS OF THE BLOCK. A HIGH TEMPERATURE INSULATING CERAMIC WOOL BLANKET IS PLACED OVER THE ROWS OF REFRACTORY BLOCK AND FOLDED INTO THE TRANSVERSE SPACES THEREBETWEEN. THE ANCHOR MECHANISM FOR THE CERAMIC BLANKET IS PLACED IN THE FOLDED PORTIONS OF THE BLANKET SO AS TO BE PROTECTED FROM DIRECT FURNACE EXPOSURE.
Inventors
- 👤 Glen V Prible
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:06
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/04; F27D1/06; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04B1/942
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |