US3199774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-duct fan
Assignee: Acme Industries Inc
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Filing: 1963-11-29
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Granted: 1965-08-10
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Mahlon A Lowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:00
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/082; F04D29/00; F04D29/58; F04D29/5806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A FAN ASSEMBLY ADAPTED TO BE MOUNTED WITHIN A DUCT COMPRISING, IN COMBINATION, (A) A MOTOR HOUSING HAVING UPSTREAM ANND DOWNSTREAM FACING WALLS WITH RESPECT TO THE GAS FLOW IN THE DUCT, (B) A PLURALITY OF SUPPORT ARMS EXTENDING FROM SAID HOUSING ADAPTED TO SUPPORT SAID HOUSING WITHIN THE DUCT, (C) AT LEAST ONE OF SAID SUPPORT ARMS BEING TUBULAR HAVING AN INNER END COMMUNICATING WITH THE INTERIOR OF SAID HOUSING AND AN OUTER END ADAPTED TO COMMUNICATE WITH THE ATMOSPHERE SURROUNDING THE DUCT IN WHICH SAID HOUSING IS MOUNTED, (D) AN ELECTRIC MOTOR WITHIN SAID HOUSING INCLUDING A CASING HAVING A FIRST END WALL DISPOSED ADJACENT SAID HOUSING UPSTREAM WALL AND A SECOND END WALL DISPOSED ADJACENT SAID HOUSING DOWNSTREAM WALL, AND A DRIVE SHAFT EXTENDING THROUGH SAID SECOND END WALL AND SAID HOUSING DOWNSTREAM WALL, (E) AN OPENING DEFINED WITHIN EACH OF SAID CASING END WALLS, (F) SEALING MEANS INTERPOSED BETWEEN SAID MOTOR CASING AND HOUSING INTERMEDIATE SAID CASING END WALLS, SAID TUBULAR SUPPORT ARMS COMMUNICATING WITH SAID
Claim 2
Dependent Claim
170 words
A FAN ASSEMBLY ADAPTED TO BE MOUNTED WITHIN A DUCT COMPRISING, IN COMBINATION, (A) A MOTOR HOUSING HAVING UPSTREAM ANND DOWNSTREAM FACING WALLS WITH RESPECT TO THE GAS FLOW IN THE DUCT, (B) A PLURALITY OF SUPPORT ARMS EXTENDING FROM SAID HOUSING ADAPTED TO SUPPORT SAID HOUSING WITHIN THE DUCT, (C) AT LEAST ONE OF SAID SUPPORT ARMS BEING TUBULAR HAVING AN INNER END COMMUNICATING WITH THE INTERIOR OF SAID HOUSING AND AN OUTER END ADAPTED TO COMMUNICATE WITH THE ATMOSPHERE SURROUNDING THE DUCT IN WHICH SAID HOUSING IS MOUNTED, (D) AN ELECTRIC MOTOR WITHIN SAID HOUSING INCLUDING A CASING HAVING A FIRST END WALL DISPOSED ADJACENT SAID HOUSING UPSTREAM WALL AND A SECOND END WALL DISPOSED ADJACENT SAID HOUSING DOWNSTREAM WALL, AND A DRIVE SHAFT EXTENDING THROUGH SAID SECOND END WALL AND SAID HOUSING DOWNSTREAM WALL, (E) AN OPENING DEFINED WITHIN EACH OF SAID CASING END WALLS, (F) SEALING MEANS INTERPOSED BETWEEN SAID MOTOR CASING AND HOUSING INTERMEDIATE SAID CASING END WALLS, SAID TUBULAR SUPPORT ARMS COMMUNICATING WITH SAID
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |