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Patent US3178923A successfully refreshed from Google Patents.
US3178923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll heating means
Assignee: Associated Electrical Industries Ltd
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Filing: 1962-08-28
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Granted: 1965-04-20
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Expires: 1982-08-28
Abstract
No abstract record available.
Inventors
- 👤 Jones Kenneth
- 👤 Stirling Alastair Ian Blyth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:16
CPC Classifications
B; B21; B21B; B21B27/00; B21B27/06; B21B27/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
HEATING MEANS FOR A HOLLOW CYLINDRICAL ROLL OF A ROLLING MILL COMPRISING: (A) FLOW PASSAGES OF SUBSTANTIALLY UNIFORM CROSS SECTIONAL AREA INSIDE AND IN HEAT EXCHANGE RELATIONSHIP WITH THE ROLL; (B) FAN MEANS ARRANGED TO CAUSE A GASEOUS FLUID TO FLOW THROUGH THE PASSAGES IN THE ROLL; (C) FEED MEANS ARRANGED TO ADD INERT GRANULAR PARTICLES TO THE GASEOUS FLUID PASSING TOWARDS THE ROLL PASSAGES; (D) HEAT IMPARTING MEANS ARRANGED TO IMPART HEAT TO THE GRANULAR PARTICLES AS THEY PASS TOWARDS THE ROLL; AND
Claim 2
Dependent Claim
84 words
HEATING MEANS FOR A HOLLOW CYLINDRICAL ROLL OF A ROLLING MILL COMPRISING: (A) FLOW PASSAGES OF SUBSTANTIALLY UNIFORM CROSS SECTIONAL AREA INSIDE AND IN HEAT EXCHANGE RELATIONSHIP WITH THE ROLL; (B) FAN MEANS ARRANGED TO CAUSE A GASEOUS FLUID TO FLOW THROUGH THE PASSAGES IN THE ROLL; (C) FEED MEANS ARRANGED TO ADD INERT GRANULAR PARTICLES TO THE GASEOUS FLUID PASSING TOWARDS THE ROLL PASSAGES; (D) HEAT IMPARTING MEANS ARRANGED TO IMPART HEAT TO THE GRANULAR PARTICLES AS THEY PASS TOWARDS THE ROLL; AND
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |