US3245476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hub mounting
Assignee: Knapp Monarch Co
•
Filing: 1964-10-26
•
Granted: 1966-04-12
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Expires: 1984-10-26
Abstract
No abstract record available.
Inventors
- 👤 Frank P Rodwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:50
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/20; B63H23/00; B63H23/32; B63H23/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A FAN AND SHAFT CONSTRUCTION COMPRISING A METAL DRIVE SHAFT, A PLASTIC HUB, AT LEAST ONE PLASTIC BLADE CONNECTED TO SAID HUB, SAID SHAFT HAVING A SLOTTED AND THREADED OUTER END WITH A RESILIENT LOCK WASHER THEREON AND A CIRCUMFERENTIAL GROOVE SPACED FROM SAID END, A RETAINING WASHER SECURELY MOUNTED IN SAID GROOVE, SAID HUB COMPRISING A CENTRAL TUBULAR MOUNTING PORTION WITH A BORE THERETHROUGH, THE PART OF THE SHAFT BETWEEN THE RETAINING WASHER AND THE LOCK WASHER BEING RECEIVED IN SAID BORE, A NUT THREADABLY SECURED ON THE OUTER END OF THE SHAFT COMPRESSING THE HUB BETWEEN THE WASHERS
Claim 2
Dependent Claim
100 words
A FAN AND SHAFT CONSTRUCTION COMPRISING A METAL DRIVE SHAFT, A PLASTIC HUB, AT LEAST ONE PLASTIC BLADE CONNECTED TO SAID HUB, SAID SHAFT HAVING A SLOTTED AND THREADED OUTER END WITH A RESILIENT LOCK WASHER THEREON AND A CIRCUMFERENTIAL GROOVE SPACED FROM SAID END, A RETAINING WASHER SECURELY MOUNTED IN SAID GROOVE, SAID HUB COMPRISING A CENTRAL TUBULAR MOUNTING PORTION WITH A BORE THERETHROUGH, THE PART OF THE SHAFT BETWEEN THE RETAINING WASHER AND THE LOCK WASHER BEING RECEIVED IN SAID BORE, A NUT THREADABLY SECURED ON THE OUTER END OF THE SHAFT COMPRESSING THE HUB BETWEEN THE WASHERS
References Cited (Backward Citations)
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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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |