Patent US4574437A successfully refreshed from Google Patents.
Patent US3154242A successfully refreshed from Google Patents.
US3154242A
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Assignee: Rotron Manufacturing Co Inc
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Filing: 1963-06-20
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Granted: 1964-10-27
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Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 Dwight E Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:31
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/62; F04D29/624; F04D29/626
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A CENTRIFUGAL BLOWER COMPRISING: A HOUSING HAVING A BASE OPENING, A MOTOR ASSEMBLY, INCLUDING MOTOR, IMPELLER AND BASE, SAID MOTOR ASSEMBLY BEING REMOVABLY LOCKED TO SAID HOUSING, LOCKING MEANS PERMITTING SAID MOTOR ASSEMBLY TO BE MANUALLY ROTATED ABOUT ITS AXIS AND REMOVABLY LOCKED TO SAID HOUSING AT ANY ONE OF A PLURALITY OF ANGULARLY DISPLACED POSITIONS, SAID LOCKING MEANS INCLUDING THE BASE OPENING RIM OF SAID HOUSING, A PROJECTING RIM ON SAID MOTOR BASE HAVING ITS INNER SURFACE FLUSH AGAINST THE OUTER SURFACE OF SAID HOUSING BASE OPENING RIM, A PLURALITY OF PROJECTING EARS ON SAID MOTOR BASE, SAID EARS PROJECTING FROM SAID MOTOR BASE INSIDE SAID HOUSING AND HAVING A PERIPHERAL DIAMETER GREATER THAN SAID HOUSING BASE OPENING DIAMETER, WHEREBY SAID HOUSING BASE OPENING RIM IS SANDWICHED BETWEEN SAID MOTOR BASE PROJECTING RIM AND SAID MOTOR BASE PROJECTING EARS, AND
Claim 2
Dependent Claim
141 words
A CENTRIFUGAL BLOWER COMPRISING: A HOUSING HAVING A BASE OPENING, A MOTOR ASSEMBLY, INCLUDING MOTOR, IMPELLER AND BASE, SAID MOTOR ASSEMBLY BEING REMOVABLY LOCKED TO SAID HOUSING, LOCKING MEANS PERMITTING SAID MOTOR ASSEMBLY TO BE MANUALLY ROTATED ABOUT ITS AXIS AND REMOVABLY LOCKED TO SAID HOUSING AT ANY ONE OF A PLURALITY OF ANGULARLY DISPLACED POSITIONS, SAID LOCKING MEANS INCLUDING THE BASE OPENING RIM OF SAID HOUSING, A PROJECTING RIM ON SAID MOTOR BASE HAVING ITS INNER SURFACE FLUSH AGAINST THE OUTER SURFACE OF SAID HOUSING BASE OPENING RIM, A PLURALITY OF PROJECTING EARS ON SAID MOTOR BASE, SAID EARS PROJECTING FROM SAID MOTOR BASE INSIDE SAID HOUSING AND HAVING A PERIPHERAL DIAMETER GREATER THAN SAID HOUSING BASE OPENING DIAMETER, WHEREBY SAID HOUSING BASE OPENING RIM IS SANDWICHED BETWEEN SAID MOTOR BASE PROJECTING RIM AND SAID MOTOR BASE PROJECTING EARS, AND
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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |