Patent US4980054A successfully refreshed from Google Patents.
Patent US3233678A successfully refreshed from Google Patents.
US3233678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine propeller
Assignee: Individual
•
Filing: 1964-09-14
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Granted: 1966-02-08
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Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 John B Wilk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:05
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/26; B63H1/20; B63H23/00; B63H23/32; B63H23/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A PLASTIC BOAT PROPELLER ROTATABLE ABOUT A CENTRAL AXIS AND HAVING A PLURALITY OF GENERALLY RADIALLY EXTENDING SOLID PLASTIC BLADE MEANS, A GENERALLY CYLINDRICAL PLASTIC HUB, THE ROOTS OF SAID BLADE MEANS BEING INTEGRALLY CONNECTED TO SAID HUB, A CENTRAL AXIALLY EXTENDING PASSAGEWAY FORMED IN SAID HUB AND DEFINING A SUPPORT WALL, A SEPARATE INSERT HUBING MOUNTED IN SAID CENTRAL AXIALLY EXTENDING PASSAGEWAY, GROOVE MEANS AND RIB MEANS FORMED ALONG SAID INSERT BUSHING, AND ALONG THE INTERIOR SURFACE OF SAID SUPPORT WALL WITH SAID RIB MEANS EXTENDING INTO SAID GROOVE MEANS TO PERMANENTLY SECURE SAID INSERT BUSHING IN SAID HUB DURING USE OF SAID PROPELLER, THE CONNECTIONS BETWEEN THE ROOTS OF SAID BLADE MEANS AND SAID HUB EXTENDING SUBSTANTIALLY FROM END TO END OF SAID HUB, THE THICKNESS OF SAID BLADE MEANS AT THE ROOTS BEING SUBSTANTIALLY GREATER THAN THE THICKNESS OF SAID BLADE MEANS AT TIPS, THE MAJOR PORTIONS OF SAID BLADE MEANS BEING SUBSTANTIALLY THINNER THAN SAID ROOTS WHEEBY DAMAGE CAUSED BY IMPACT FORCES TENDS TO BE CONCENTRATED ONLY AT THE TIPS OF SAID BLADE MEANS, AND THE AVERAGE THICKNESS OF SAID ANNULAR WALL BEING APPROXIMATELY THE SAME THICKNESS AS THE TIPS OF SAID BLADE MEANS AND SUBSTANTIALLY THINNER THAN THE THICKNESS OF THE ROOTS OF SAID BLADE MEANS.
Claim 2
Dependent Claim
211 words
A PLASTIC BOAT PROPELLER ROTATABLE ABOUT A CENTRAL AXIS AND HAVING A PLURALITY OF GENERALLY RADIALLY EXTENDING SOLID PLASTIC BLADE MEANS, A GENERALLY CYLINDRICAL PLASTIC HUB, THE ROOTS OF SAID BLADE MEANS BEING INTEGRALLY CONNECTED TO SAID HUB, A CENTRAL AXIALLY EXTENDING PASSAGEWAY FORMED IN SAID HUB AND DEFINING A SUPPORT WALL, A SEPARATE INSERT HUBING MOUNTED IN SAID CENTRAL AXIALLY EXTENDING PASSAGEWAY, GROOVE MEANS AND RIB MEANS FORMED ALONG SAID INSERT BUSHING, AND ALONG THE INTERIOR SURFACE OF SAID SUPPORT WALL WITH SAID RIB MEANS EXTENDING INTO SAID GROOVE MEANS TO PERMANENTLY SECURE SAID INSERT BUSHING IN SAID HUB DURING USE OF SAID PROPELLER, THE CONNECTIONS BETWEEN THE ROOTS OF SAID BLADE MEANS AND SAID HUB EXTENDING SUBSTANTIALLY FROM END TO END OF SAID HUB, THE THICKNESS OF SAID BLADE MEANS AT THE ROOTS BEING SUBSTANTIALLY GREATER THAN THE THICKNESS OF SAID BLADE MEANS AT TIPS, THE MAJOR PORTIONS OF SAID BLADE MEANS BEING SUBSTANTIALLY THINNER THAN SAID ROOTS WHEEBY DAMAGE CAUSED BY IMPACT FORCES TENDS TO BE CONCENTRATED ONLY AT THE TIPS OF SAID BLADE MEANS, AND THE AVERAGE THICKNESS OF SAID ANNULAR WALL BEING APPROXIMATELY THE SAME THICKNESS AS THE TIPS OF SAID BLADE MEANS AND SUBSTANTIALLY THINNER THAN THE THICKNESS OF THE ROOTS OF SAID BLADE MEANS.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |