Patent US3231176A successfully refreshed from Google Patents.
US3231176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal blower assembly with combined rotor and blower wheel
Assignee: TRANE CAC Inc A CORP OF
•
Filing: 1964-06-30
•
Granted: 1966-01-25
•
Expires: 1984-06-30
Abstract
No abstract record available.
Inventors
- 👤 William J Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:14
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/08; F04D17/16; F04D17/162; F04D25/00; F04D25/02; F04D25/06; F04D25/0606; F04D25/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A CENTRIFUGAL BLOWER COMPRISING A HOUSING OF GENERALLY VOLUTE SHAPE INCLUDING OPPOSED SCROLL SIDES, MEANS DEFINING A PAIR OF ALIGNED AIR INTAKE OPENINGS THROUGH SAID SCROLL SIDES TO THE INTERIOR OF SAID HOUSING, A BLOWER WHEEL WITHIN SAID HOUSING HAVING BLADES FORMING A CAGE STRUCTURE, A SUPPORTING SHAFT THROUGH THE CENTER OF THE WHEEL, BEARING MEMBERS POSITIONED IN THE INTAKE OPENINGS AND SUPPORTING THE BLOWER WHEEL SHAFT THEREIN, MEANS DEFINING AN OUTLET FROM SAID HOUSING, AND AN ELECTRIC MOTOR FOR DRIVING THE BLOWER WHEEL, SAID MOTOR INCLUDING AN
Claim 2
Dependent Claim
88 words
A CENTRIFUGAL BLOWER COMPRISING A HOUSING OF GENERALLY VOLUTE SHAPE INCLUDING OPPOSED SCROLL SIDES, MEANS DEFINING A PAIR OF ALIGNED AIR INTAKE OPENINGS THROUGH SAID SCROLL SIDES TO THE INTERIOR OF SAID HOUSING, A BLOWER WHEEL WITHIN SAID HOUSING HAVING BLADES FORMING A CAGE STRUCTURE, A SUPPORTING SHAFT THROUGH THE CENTER OF THE WHEEL, BEARING MEMBERS POSITIONED IN THE INTAKE OPENINGS AND SUPPORTING THE BLOWER WHEEL SHAFT THEREIN, MEANS DEFINING AN OUTLET FROM SAID HOUSING, AND AN ELECTRIC MOTOR FOR DRIVING THE BLOWER WHEEL, SAID MOTOR INCLUDING AN
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |