US3175755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan construction
Assignee: The Brundage Co
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Filing: 1962-06-20
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Granted: 1965-03-30
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Expires: 1982-06-20
Abstract
No abstract record available.
Inventors
- 👤 Wilden A Rockafield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:44
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/08; F04D17/16; F04D17/162; F04D25/00; F04D25/02; F04D25/06; F04D25/0606; F04D25/0613
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN A CENTRIFUGAL FAN CONSTRUCTION INCLUDING A FAN HOUSING HAVING A PAIR OF END WALLS AND A SCROLL WALL WITH AN INLET OPENING THROUGH AT LEAST ONE OF SAID END WALLS THEREOF, THE COMBINATION COMPRISING: A MOTOR INCLUDING A STATOR HAVING A SHAFT OPENING EXTENDING THERETHROUGH AND AN OVERHUNG ROTOR ENCIRCLING SAID STATOR; SUPPORT MEANS RIGIDLY SECURED TO SAID STATOR AND MOUNTED WITH RESPECT TO SAID SCROLL WALL SO THAT SAID SHAFT OPENING IN SAID STATOR IS SUBSTANTIALLY PERPENDICULAR TO SAID END WALL AND COAXIAL WITH THE INLET OPENINGS; BEARING MEANS INCLUDING A BEARING MOUNTED RADIALLY EXTERNALLY OF SAID STATOR ROTATABLY SUPPORTING SAID ROTOR UPON SAID STATOR; A SHAFT RIGIDLY SECURED TO SAID ROTOR AND ROTATABLE THEREWITH, SAID SHAFT EXTENDING THROUGH AND BEYOND SAID SHAFT OPENING; AN IMPELLER BLADE SUPPORTING MEANS AND A PLURALITY OF BLADES SECURED THERETO, SAID BLADE SUPPORTING MEANS BEING SECURED TO AND ROTATABLE WITH SAID ROTOR.
Claim 2
Dependent Claim
150 words
IN A CENTRIFUGAL FAN CONSTRUCTION INCLUDING A FAN HOUSING HAVING A PAIR OF END WALLS AND A SCROLL WALL WITH AN INLET OPENING THROUGH AT LEAST ONE OF SAID END WALLS THEREOF, THE COMBINATION COMPRISING: A MOTOR INCLUDING A STATOR HAVING A SHAFT OPENING EXTENDING THERETHROUGH AND AN OVERHUNG ROTOR ENCIRCLING SAID STATOR; SUPPORT MEANS RIGIDLY SECURED TO SAID STATOR AND MOUNTED WITH RESPECT TO SAID SCROLL WALL SO THAT SAID SHAFT OPENING IN SAID STATOR IS SUBSTANTIALLY PERPENDICULAR TO SAID END WALL AND COAXIAL WITH THE INLET OPENINGS; BEARING MEANS INCLUDING A BEARING MOUNTED RADIALLY EXTERNALLY OF SAID STATOR ROTATABLY SUPPORTING SAID ROTOR UPON SAID STATOR; A SHAFT RIGIDLY SECURED TO SAID ROTOR AND ROTATABLE THEREWITH, SAID SHAFT EXTENDING THROUGH AND BEYOND SAID SHAFT OPENING; AN IMPELLER BLADE SUPPORTING MEANS AND A PLURALITY OF BLADES SECURED THERETO, SAID BLADE SUPPORTING MEANS BEING SECURED TO AND ROTATABLE WITH SAID ROTOR.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |