US3279684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible fan apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1963-07-05
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Granted: 1966-10-18
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Robert S Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:10
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/082; F04D19/00; F04D19/002; F04D19/005; F04D29/00; F04D29/58; F04D29/5806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN MOTOR DRIVEN FAN APPARATUS, A MOTOR INCLUDING AN AXLE, A DISC SHAPED FAN SPIDER MEMBER OPERATIVELY CONNECTED TO THE AXLE OF THE MOTOR, A PLURALITY OF BLADES CARRIED BY SAID SPIDER, EACH OF SAID BLADES HAVING AN INNER PORTION WITH OPPOSED OUTSIDE SURFACES FOR MOVING AIR RADIALLY OUTWARD, EACH OF SAID BLADES BEING CONNECTED TO SAID SPIDER MEMBER WITH THE INNER PORTION OF EACH OF SAID BLADES EXTENDING BEHIND SAID SPIDER MEMBER TOWARD THE AXLE OF THE MOTOR A PREDETERMINED DISTANCE AND BEING DISPOSED AWAY FROM SAID SPIDER MEMBER A PREDETERMINED DISTANCE TOWARD SAID MOTOR, WHEREBY THE OPPOSED OUTSIDE SURFACES OF SAID INNER PORTION COOPERATE WITH THE
Claim 2
Dependent Claim
108 words
IN MOTOR DRIVEN FAN APPARATUS, A MOTOR INCLUDING AN AXLE, A DISC SHAPED FAN SPIDER MEMBER OPERATIVELY CONNECTED TO THE AXLE OF THE MOTOR, A PLURALITY OF BLADES CARRIED BY SAID SPIDER, EACH OF SAID BLADES HAVING AN INNER PORTION WITH OPPOSED OUTSIDE SURFACES FOR MOVING AIR RADIALLY OUTWARD, EACH OF SAID BLADES BEING CONNECTED TO SAID SPIDER MEMBER WITH THE INNER PORTION OF EACH OF SAID BLADES EXTENDING BEHIND SAID SPIDER MEMBER TOWARD THE AXLE OF THE MOTOR A PREDETERMINED DISTANCE AND BEING DISPOSED AWAY FROM SAID SPIDER MEMBER A PREDETERMINED DISTANCE TOWARD SAID MOTOR, WHEREBY THE OPPOSED OUTSIDE SURFACES OF SAID INNER PORTION COOPERATE WITH THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |