Patent US3312286A successfully refreshed from Google Patents.
US3312286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface propeller
Assignee: Outboard Marine Corp
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Filing: 1966-04-28
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Granted: 1967-04-04
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Expires: 1986-04-28
Abstract
No abstract record available.
Inventors
- 👤 Finn T Irgens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:51
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/18; B63H2001/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROPELLER COMPRISING A HUB HAVING AN AXIS OF INTENDED ROTATION, A BLADE EXTENDING FROM SAID HUB, MEANS DEFINING A POCKET LOCATED AT LEAST IN ONE OF SAID HUB AND SAID BLADE ADJACENT TO THE JUNCTURE OF SAID BLADE AND SAID HUB, SAID POCKET BEING OPEN REARWARDLY AND REDIALLY OUTWARDLY IN THE DIRECTION OF SAID BLADE AND BEING DEFINED, IN PART, BY A FIRST SURFACE WHICH MERGES WITH SAID BLADE, A SECOND SURFACE EXTENDING FORE AND AFT IN APPROXIMATELY PARALLEL RELATION TO THE INTENDED AXIS OF HUB ROTATION, AND A CONNECTING SURFACE JOINING SAID FIRST SURFACE AND SAID SECOND SURFACE.
Claim 2
Dependent Claim
100 words
A PROPELLER COMPRISING A HUB HAVING AN AXIS OF INTENDED ROTATION, A BLADE EXTENDING FROM SAID HUB, MEANS DEFINING A POCKET LOCATED AT LEAST IN ONE OF SAID HUB AND SAID BLADE ADJACENT TO THE JUNCTURE OF SAID BLADE AND SAID HUB, SAID POCKET BEING OPEN REARWARDLY AND REDIALLY OUTWARDLY IN THE DIRECTION OF SAID BLADE AND BEING DEFINED, IN PART, BY A FIRST SURFACE WHICH MERGES WITH SAID BLADE, A SECOND SURFACE EXTENDING FORE AND AFT IN APPROXIMATELY PARALLEL RELATION TO THE INTENDED AXIS OF HUB ROTATION, AND A CONNECTING SURFACE JOINING SAID FIRST SURFACE AND SAID SECOND SURFACE.
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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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |