Patent US3094273A successfully refreshed from Google Patents.
US3094273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan assembly
Assignee: CANYON SWI Inc
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Filing: 1959-06-25
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Granted: 1963-06-18
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Expires: 1979-06-25
Abstract
No abstract record available.
Inventors
- 👤 Richard L Hull
- 👤 Alonzo M Harp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:27
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/05; F04D29/056; F04D29/059; F04D25/00; F04D25/16; F04D25/166; F04D29/58; F04D29/582; F04D29/584; F04D29/5853
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
176 words
APPARATUS COMPRISING IN COMBINATION, AN ENCLOSURE WITHIN WHICH GASES ARE ADAPTED TO BE HEATED TO A HIGH TEMPERATURE, SAID ENCLOSURE INCLUDING A WALL HAVING AN OUTLET THEREIN FOR THE ESCAPE OF HOT GASES FROM SAID ENCLOSURE; A FAN ASSEMBLY INCLUDING FIRST FAN MEANS LOCATED WITHIN SAID OUTLET FOR MOVING SAID GASES IN SAID ENCLOSURE; A DRIVE SHAFT FOR SAID FIRST FAN MEANS HAVING A FIRST PORTION EXTENDING TRANSVERSELY ACROSS SAID ENCLOSURE, AND A SECOND PORTION EXTENDING OUTWARDLY FROM SAID ENCLOSURE; TUBULAR MEANS HAVING OPENINGS NEAR BOTH ENDS THEREOF AND SURROUNDING SAID SECOND PORTION OF SAID SHAFT; BEARINGS SUPPORTED BY SAID TUBULAR MEANS FOR SAID SHAFT, AT LEAST ONE OF SAID BEARINGS BEING LOCATED WITHIN SAID TUBULAR MEANS ADJACENT SAID ENCLOSURE; INSULATING MEANS EXTENDING TRANSVERSELY ACROSS SAID ENCLOSURE AND COMPLETELY SURROUNDING AND ISOLATING FROM SAID ENCLOSURE, SAID FIRST PORTION OF SAID DRIVE SHAFT AS WELL AS SAID ONE OF SAID BEARINGS; CENTRIFUGAL FAN MEANS FOR CIRCULATING COOL GASES THROUGH SAID TUBULAR MEANS AND OVER THE BEARING THEREIN; AND MEANS OUTSIDE OF SAID ENCLOSURE FOR ROTATING SAID SHAFT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |