US3169694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller fans and the like
Assignee: Individual
•
Filing: 1963-04-08
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Granted: 1965-02-16
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Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 Borchers Ariel George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:59
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/38; F04D29/384
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A PROPELLER FOR AIR INCLUDING A CASING HAVING A BELL MOUTHED INLET PORTION AND INCLUDING AN OUTLET PORTION AND HAVING A THROAT PORTION, A PROPELLER MOUNTED FOR ROTATION WITHIN SAID THROAT PORTION AND INCLUDING A PLURALITY OF BLADES, EACH OF SAID BLADES INCLUDING A TIP PORITON, A DESIGN POINT DISPOSED INWARDLY OF THE TIP PORTION, AND EACH OF SAID BLADES HAVING A HUB PORTION, A HUB MOUNTING EACH OF SAID BLADES, AND A DRIVING SHAFT CONNECTED WITH SAID HUB FOR ROTATING THE BLADES, THE INLET ANGLE AT THE TIP PORTION OF EACH OF SAID BLADES BEING APPROXIMATELY 14.14 DEGREES, THE INLET ANGLE AT THE DESIGN POINT AT EACH OF SAID BLADES BEING APPROXIMATELY 19.6*, AND THE INLET ANGLE AT THE HUB PORTION OF EACH OF SAID BLADES BEING APPROXIMATELY 55.35*, AND THE OUTLET ANGLE OF EACH OF THE BLADES BEING APPROXIMATELY 16.6* AT THE TIP PORTION OF THE BLADES, THE OUTLET ANGLE OF EACH OF THE BLADES AT THE DESIGN POINT BEING APPROXIMATELY 22.25*, AND THE OUTLET ANGLE OF EACH OF THE BLADES AT THE HUB PORTION BEING APPROXIMATELY 59.75*.
Claim 2
Dependent Claim
180 words
A PROPELLER FOR AIR INCLUDING A CASING HAVING A BELL MOUTHED INLET PORTION AND INCLUDING AN OUTLET PORTION AND HAVING A THROAT PORTION, A PROPELLER MOUNTED FOR ROTATION WITHIN SAID THROAT PORTION AND INCLUDING A PLURALITY OF BLADES, EACH OF SAID BLADES INCLUDING A TIP PORITON, A DESIGN POINT DISPOSED INWARDLY OF THE TIP PORTION, AND EACH OF SAID BLADES HAVING A HUB PORTION, A HUB MOUNTING EACH OF SAID BLADES, AND A DRIVING SHAFT CONNECTED WITH SAID HUB FOR ROTATING THE BLADES, THE INLET ANGLE AT THE TIP PORTION OF EACH OF SAID BLADES BEING APPROXIMATELY 14.14 DEGREES, THE INLET ANGLE AT THE DESIGN POINT AT EACH OF SAID BLADES BEING APPROXIMATELY 19.6*, AND THE INLET ANGLE AT THE HUB PORTION OF EACH OF SAID BLADES BEING APPROXIMATELY 55.35*, AND THE OUTLET ANGLE OF EACH OF THE BLADES BEING APPROXIMATELY 16.6* AT THE TIP PORTION OF THE BLADES, THE OUTLET ANGLE OF EACH OF THE BLADES AT THE DESIGN POINT BEING APPROXIMATELY 22.25*, AND THE OUTLET ANGLE OF EACH OF THE BLADES AT THE HUB PORTION BEING APPROXIMATELY 59.75*.
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |