Patent US3148736A successfully refreshed from Google Patents.
US3148736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller
Assignee: Individual
•
Filing: 1962-03-26
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Granted: 1964-09-15
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Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Skopyk Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:14
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROPELLER INCLUDING A PLURALITY OF SUBSTANTIALLY IDENTICAL BLADES; EACH OF SAID BLADES HAVING A ROOT END, A TIP, A LEADING EDGE AND A TRAILING EDGE; A CENTRE HUB SUPPORTING SAID BLADES AT SAID ROOT ENDS; A TUNNEL MEMBER SUPPORTING SAID TOPS; SAID TUNNEL MEMBER AND SAID TIPS BEING ELONGATED REARWARDLY OF SAID HUB; SAID BLADES BEING OF VOLUTE CONFIGURATION; SAID VOLUTE CONFIGURATION EXTENDING AT LEAST HALF THE INNER CIRCUMFERENCE OF SAID TUNNEL MEMBER; AND MEANS FOR ATTACHING SAID HUB TO CONVENTIONAL DRIVING MEANS.
Claim 2
Dependent Claim
84 words
A PROPELLER INCLUDING A PLURALITY OF SUBSTANTIALLY IDENTICAL BLADES; EACH OF SAID BLADES HAVING A ROOT END, A TIP, A LEADING EDGE AND A TRAILING EDGE; A CENTRE HUB SUPPORTING SAID BLADES AT SAID ROOT ENDS; A TUNNEL MEMBER SUPPORTING SAID TOPS; SAID TUNNEL MEMBER AND SAID TIPS BEING ELONGATED REARWARDLY OF SAID HUB; SAID BLADES BEING OF VOLUTE CONFIGURATION; SAID VOLUTE CONFIGURATION EXTENDING AT LEAST HALF THE INNER CIRCUMFERENCE OF SAID TUNNEL MEMBER; AND MEANS FOR ATTACHING SAID HUB TO CONVENTIONAL DRIVING 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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |