US3302867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan assembly
Assignee: Individual
•
Filing: 1965-10-23
•
Granted: 1967-02-07
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Roffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:30
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/263; F16; F16F; F16F15/00; F16F15/32; F16F15/322; F16B; F16B2200/00; F16B2200/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A FAN ASSEMBLY COMPRISING A FAN-BLADE MEMBER HAVING A CENTRAL NON-CIRCULAR APERTURE, A HUB ROTATABLE ABOUT AN AXIS AND HAVING A NON-CIRCULAR BOSS SUBSTANTIALLY CONFORMING IN SHAPE TO THE NON-CIRCULAR APERTURE, THE BOSS HAVING A PAIR OF SPACED-APART GROOVES HAVING MAJOR PLANES SUBSTANTIALLY PERPENDICULAR TO THE HUB AXIS OF ROTATION, THE HUB BEING DISPOSED THROUGH THE APERTURE WHEREBY THE MEMBER IS DISPOSED BETWEEN THE GROOVES IN ENGAGEMENT WITH THE BOSS, AND A PAIR OF RESILIENT RETAINING RINGS, ONE RING BEING RELEASABLY ENGAGED IN EACH RESPECTIVE GROOVE AND EXTENDING RADIALLY OUTWARDLY FROM THE PERIPHERY OF THE BOSS TO CONFINE THE MEMBER ON THE BOSS.
Claim 2
Dependent Claim
103 words
A FAN ASSEMBLY COMPRISING A FAN-BLADE MEMBER HAVING A CENTRAL NON-CIRCULAR APERTURE, A HUB ROTATABLE ABOUT AN AXIS AND HAVING A NON-CIRCULAR BOSS SUBSTANTIALLY CONFORMING IN SHAPE TO THE NON-CIRCULAR APERTURE, THE BOSS HAVING A PAIR OF SPACED-APART GROOVES HAVING MAJOR PLANES SUBSTANTIALLY PERPENDICULAR TO THE HUB AXIS OF ROTATION, THE HUB BEING DISPOSED THROUGH THE APERTURE WHEREBY THE MEMBER IS DISPOSED BETWEEN THE GROOVES IN ENGAGEMENT WITH THE BOSS, AND A PAIR OF RESILIENT RETAINING RINGS, ONE RING BEING RELEASABLY ENGAGED IN EACH RESPECTIVE GROOVE AND EXTENDING RADIALLY OUTWARDLY FROM THE PERIPHERY OF THE BOSS TO CONFINE THE MEMBER ON THE BOSS.
References Cited (Backward Citations)
US2492029A
Cited
US2557511A
Cited
US2653459A
Cited
US2773365A
Cited
US3084963A
Cited
US3084852A
Cited
US3222096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |