Patent US3227430A successfully refreshed from Google Patents.
US3227430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory structure for a rotary kiln
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1964-06-24
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Granted: 1966-01-04
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Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel H Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:16
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/02; F27B7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A ROTARY KILN HAVING A METAL SHELL LONGITUDINALLY INCLINED TO THE HORIZONTAL AND AN UPPER END AND A LOWER END, A HEAT EXCHANGE STRUCTURE DISPOSED WITHIN SAID SHELL AND COMPRISING A METAL REINFORCING FRAME WORK COMPRISING A PLURALITY OF GENERALLY LONGITUDINAL ROWS OF OUTER SUPPORT MEANS AFFIXED TO THE INTERIOR SURFACE OF SAID SHELL, A CENTRAL SUPPORT MEANS DISPOSED AT THE AXIS OF SAID KILN, A PLURALITY OF ROWS OF CONNECTOR MEANS DISPOSED BETWEEN SAID ROWS OF OUTER SUPPORT MEANS AND SAID CENTRAL SUPPORT MEANS, EACH OF SAID CONNECTOR MEANS BEING CONNECTED WITH ONE MEMBER OF SAID ROW OF OUTER SUPPORT MEANS AND WITH SAID CENTRAL SUPPORT MEANS, APERTURED METAL SHEET DISPOSED OVER SAID OUTER SUPPORT MEANS, SAID CENTRAL SUPPORT MEANS AND SAID CONNECTOR MEANS AND DEFINING A PLURALITY OF RADIALLY DISPOSED INTERIOR SECTIONS OF SAID KILN; AND REFRACTORY MATERIAL DISPOSED WITHIN SAID APERTURED METAL SHEETS AND EMBEDDING SUBSTANTIALLY ALL OF SAID SUPPORT MEANS.
Claim 2
Dependent Claim
155 words
IN A ROTARY KILN HAVING A METAL SHELL LONGITUDINALLY INCLINED TO THE HORIZONTAL AND AN UPPER END AND A LOWER END, A HEAT EXCHANGE STRUCTURE DISPOSED WITHIN SAID SHELL AND COMPRISING A METAL REINFORCING FRAME WORK COMPRISING A PLURALITY OF GENERALLY LONGITUDINAL ROWS OF OUTER SUPPORT MEANS AFFIXED TO THE INTERIOR SURFACE OF SAID SHELL, A CENTRAL SUPPORT MEANS DISPOSED AT THE AXIS OF SAID KILN, A PLURALITY OF ROWS OF CONNECTOR MEANS DISPOSED BETWEEN SAID ROWS OF OUTER SUPPORT MEANS AND SAID CENTRAL SUPPORT MEANS, EACH OF SAID CONNECTOR MEANS BEING CONNECTED WITH ONE MEMBER OF SAID ROW OF OUTER SUPPORT MEANS AND WITH SAID CENTRAL SUPPORT MEANS, APERTURED METAL SHEET DISPOSED OVER SAID OUTER SUPPORT MEANS, SAID CENTRAL SUPPORT MEANS AND SAID CONNECTOR MEANS AND DEFINING A PLURALITY OF RADIALLY DISPOSED INTERIOR SECTIONS OF SAID KILN; AND REFRACTORY MATERIAL DISPOSED WITHIN SAID APERTURED METAL SHEETS AND EMBEDDING SUBSTANTIALLY ALL OF SAID SUPPORT MEANS.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |