Patent US3202081A successfully refreshed from Google Patents.
US3202081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator
Assignee: Loren Cook Co
•
Filing: 1964-04-09
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Granted: 1965-08-24
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Expires: 1984-04-09
Abstract
No abstract record available.
Inventors
- 👤 Cook Loren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:04
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/02; F24F7/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A VENTILATOR INCLUDING A BASE FOR APPLICATION TO A CURB ON THE ROOF OF A BUILDING AND HAVING AN UPWARDLY EXTENDING ANNULAR DUCT MEANS, A RADIALLY EXTENDING CIRCULAR FIRST WALL HAVING A CENTRAL APERTURE THEREIN WHICH IS SPACED UPWARDLY FROM SAID DUCT MEANS AND TERMINATES IN AN OUTWARDLY AND DOWNWARDLY INCLINED ANNULAR BAFFLE, MEANS FOR SUPPORTING SAID CIRCULAR WALL IN SPACED RELATION TO SAID DUCT MEANS, A ROTATABLE BLOSER ARRANGED BELOW SAID CIRCULAR WALL, MEANS FOR PROVIDING A COMPARTMENT FOR SAID BLOWER INCLUDING AN SECOND ANNULAR WALL WHICH SURROUNDS SAID BLOWER AND TERMINATES BELOW THE UPPER PORTION OF SAID BLOWER AND SAID BAFFLE BUT EXTENDS A SUFFICIENT DISTANCE VERTICALLY UPWARDLY RELATIVE TO THE BASE ABOVE THE LOWER PORTION OF SAID BLOWER TO PROVIDE AN ANNULAR OUTLET OPENING FOR THE EGRESS OF AIR FROM SAID BLOWER COMPARTMENT WHICH HAS SUBSTANTIALLY THE SAME CROSS SECTIONAL AREA AS THE CROSS SECTIONAL AREA OF THE INLET DUCT MEANS, MEANS FOR SUPPORTING SAID SECOND ANNULAR WALL, A MOTOR SUPPORTED ON THE RADIALLY EXTENDING CIRCULAR
Claim 2
Dependent Claim
169 words
A VENTILATOR INCLUDING A BASE FOR APPLICATION TO A CURB ON THE ROOF OF A BUILDING AND HAVING AN UPWARDLY EXTENDING ANNULAR DUCT MEANS, A RADIALLY EXTENDING CIRCULAR FIRST WALL HAVING A CENTRAL APERTURE THEREIN WHICH IS SPACED UPWARDLY FROM SAID DUCT MEANS AND TERMINATES IN AN OUTWARDLY AND DOWNWARDLY INCLINED ANNULAR BAFFLE, MEANS FOR SUPPORTING SAID CIRCULAR WALL IN SPACED RELATION TO SAID DUCT MEANS, A ROTATABLE BLOSER ARRANGED BELOW SAID CIRCULAR WALL, MEANS FOR PROVIDING A COMPARTMENT FOR SAID BLOWER INCLUDING AN SECOND ANNULAR WALL WHICH SURROUNDS SAID BLOWER AND TERMINATES BELOW THE UPPER PORTION OF SAID BLOWER AND SAID BAFFLE BUT EXTENDS A SUFFICIENT DISTANCE VERTICALLY UPWARDLY RELATIVE TO THE BASE ABOVE THE LOWER PORTION OF SAID BLOWER TO PROVIDE AN ANNULAR OUTLET OPENING FOR THE EGRESS OF AIR FROM SAID BLOWER COMPARTMENT WHICH HAS SUBSTANTIALLY THE SAME CROSS SECTIONAL AREA AS THE CROSS SECTIONAL AREA OF THE INLET DUCT MEANS, MEANS FOR SUPPORTING SAID SECOND ANNULAR WALL, A MOTOR SUPPORTED ON THE RADIALLY EXTENDING CIRCULAR
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |