US3836612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for lining rotary kilns
Assignee: NATIONAL REFRACTORIES & MINERALS Corp A CORP OF
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Filing: 1973-01-11
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Granted: 1974-09-17
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Expires: 1993-01-11
Abstract
Abstract A method for lining rotary kilns with monolithic castable refractory comprising placing rings made of segments preferable adjustable attached to each other so the rings can be adjusted to the desired circumference, the rings having removable spacer elements which support the rings on and space them from the kiln shell. Forms are attached to the rings and castable refractory place between the forms and the kiln shell to form the lining. The lining is cast in sections, the kiln being rotated so that the casting of each section is done in a downward direction. The spacer elements are removed from each section prior to casting refractory material in that section.
Inventors
- 👤 L Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:27
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/28; B; B28; B28B; B28B5/00; B28B5/10; B28B5/12; B28B7/00; B28B7/28; B28B7/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |