Patent US3367423A successfully refreshed from Google Patents.
US3367423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller
Assignee: Individual
•
Filing: 1966-06-13
•
Granted: 1968-02-06
•
Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Cornelius W Van Ranst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:55
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/26; B63H1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A PROPELLER HAVING A HUB PORTION AND THREE BLADES OF UNIFORM THICKNESS THROUGHOUT RADIATING THEREFROM, EACH BLADE OVERLYING 100 DEGREES OF THE CIRCUMFERENCE OF THE HUB PORTION AND HAVING IN SEQUENCE A LEADING EDGE WHICH OVERLIES 70 DEGREES OF SAID CIRCUMFERENCE, AN OUTER CIRCUMFERENTIAL EDGE WHICH OVERLIES 20 DEGREES OF SAID CIRCUMFERENCE AND A TRAILING EDGE WHICH OVERLIES 10 DEGREES OF SAID CIRCUMFERENCE, SAID LEADING EDGE DEFINING A LINE WHICH IS A CONTINUOUS REARWARD PROGRESSION FROM ITS ORIGIN AT THE HUB PORTION TO ITS TERMINATION AT THE CIRCUMFERENTIAL EDGE, SAID CIRCUMFERENTIAL EDGE DEFINING A LINE WHICH IS SUBSTANTIALLY A CONSTANT RADIUS FROM THE AXIS OF SAID HUB PORTION, SAID TRAILING EDGE DEFINING A SUBSTANTIALLY STRAIGHT LINE INCLINED REARWARDLY FROM ITS ORIGIN AT SAID OUTER CIRCUMFERENTIAL EDGE TO ITS TERMINATION AT SAID HUB PORTION.
Claim 2
Dependent Claim
133 words
A PROPELLER HAVING A HUB PORTION AND THREE BLADES OF UNIFORM THICKNESS THROUGHOUT RADIATING THEREFROM, EACH BLADE OVERLYING 100 DEGREES OF THE CIRCUMFERENCE OF THE HUB PORTION AND HAVING IN SEQUENCE A LEADING EDGE WHICH OVERLIES 70 DEGREES OF SAID CIRCUMFERENCE, AN OUTER CIRCUMFERENTIAL EDGE WHICH OVERLIES 20 DEGREES OF SAID CIRCUMFERENCE AND A TRAILING EDGE WHICH OVERLIES 10 DEGREES OF SAID CIRCUMFERENCE, SAID LEADING EDGE DEFINING A LINE WHICH IS A CONTINUOUS REARWARD PROGRESSION FROM ITS ORIGIN AT THE HUB PORTION TO ITS TERMINATION AT THE CIRCUMFERENTIAL EDGE, SAID CIRCUMFERENTIAL EDGE DEFINING A LINE WHICH IS SUBSTANTIALLY A CONSTANT RADIUS FROM THE AXIS OF SAID HUB PORTION, SAID TRAILING EDGE DEFINING A SUBSTANTIALLY STRAIGHT LINE INCLINED REARWARDLY FROM ITS ORIGIN AT SAID OUTER CIRCUMFERENTIAL EDGE TO ITS TERMINATION AT SAID HUB PORTION.
References Cited (Backward Citations)
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Cited
FR764860A
Cited
US2011821A
Cited
GB511932A
Cited
US2390879A
Cited
US2378049A
Cited
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Cited
GB683012A
Cited
FR1065181A
Cited
US3023709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |