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 12:41
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)
FR527573A
Cited
FR764860A
Cited
US2011821A
Cited
GB511932A
Cited
US2390879A
Cited
US2378049A
Cited
DE949899C
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 |