US3129767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque converting propeller
Assignee: Individual
•
Filing: 1962-01-12
•
Granted: 1964-04-21
•
Expires: 1982-01-12
Abstract
No abstract record available.
Inventors
- 👤 William B Mclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:04
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A TORQUE CONVERTING PROPELLER SYSTEM, COMPRISING, A DRIVE SHAFT, AN IMPELLER SECURED TO AND ROTATABLE WITH SAID DRIVE SHAFT, A PROPELLER HAVING A CHAMBERED HUB ENCOMPASSING SAID IMPELLER WITH AN ANNULAR CLEARANCE FOR FREE ROTATION ABOUT SAID IMPELLER, SAID CHAMBERED HUB HAVING A FLUID INLET PASSAGE ON ONE SIDE ARRANGED IN CLOSE PROXIMITY TO SAID DRIVE SHAFT FOR PASSING FLUID TO SAID IMPELLER, SAID ANNULAR CLEARANCE BETWEEN SAID IMPELLER AND CHAMBERED HUB OF SAID PROPELLER FORMING A FLUID ROTARY BEARING CREATED BY FLOW OF SAID FLUID UNDER PRESSURE FROM SAID IMPELLER, SAID PROPELLER HAVING AT LEAST ONE BLADE WITH A PASSAGEWAY THEREIN COMMUNICATING BETWEEN THE CHAMBERED HUB AND A REARWARDLY DIRECTED ORIFICE IN THE TIP OF SAID BLADE, WHEREBY FLUID IS PASSED FROM SAID FLUID INLET PASSAGE IN SAID CHAMBERED HUB THROUGH SAID IMPELLER TO SAID PASSAGEWAY AND ORIFICE IN SAID PROPELLER TO ROTATE SAID BLADE.
Claim 2
Dependent Claim
146 words
A TORQUE CONVERTING PROPELLER SYSTEM, COMPRISING, A DRIVE SHAFT, AN IMPELLER SECURED TO AND ROTATABLE WITH SAID DRIVE SHAFT, A PROPELLER HAVING A CHAMBERED HUB ENCOMPASSING SAID IMPELLER WITH AN ANNULAR CLEARANCE FOR FREE ROTATION ABOUT SAID IMPELLER, SAID CHAMBERED HUB HAVING A FLUID INLET PASSAGE ON ONE SIDE ARRANGED IN CLOSE PROXIMITY TO SAID DRIVE SHAFT FOR PASSING FLUID TO SAID IMPELLER, SAID ANNULAR CLEARANCE BETWEEN SAID IMPELLER AND CHAMBERED HUB OF SAID PROPELLER FORMING A FLUID ROTARY BEARING CREATED BY FLOW OF SAID FLUID UNDER PRESSURE FROM SAID IMPELLER, SAID PROPELLER HAVING AT LEAST ONE BLADE WITH A PASSAGEWAY THEREIN COMMUNICATING BETWEEN THE CHAMBERED HUB AND A REARWARDLY DIRECTED ORIFICE IN THE TIP OF SAID BLADE, WHEREBY FLUID IS PASSED FROM SAID FLUID INLET PASSAGE IN SAID CHAMBERED HUB THROUGH SAID IMPELLER TO SAID PASSAGEWAY AND ORIFICE IN SAID PROPELLER TO ROTATE SAID BLADE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |