US3102506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outboard motor propeller construction
Assignee: Kiekhaefer Corp
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Filing: 1962-02-27
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Granted: 1963-09-03
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Expires: 1982-02-27
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Kiekhaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:16
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/20; B63H20/00; B63H20/24; B63H20/26; B63H23/00; B63H23/32; B63H23/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A PROPULSION UNIT FOR A BOAT; A PROPELLER; MEANS TO ROTATE THE PROPELLER SELECTIVELY IN ONE DIRECTION FOR FORWARD OPERATION OF THE PROPULSION UNIT AND IN THE OPPOSITE DIRECTION FOR REVERSE OPERATION OF THE UNIT; SAID PROPELLER COMPRISING AN OUTER HUB SLEEVE AND AN INNER HUB SLEEVE, SAID SLEEVES BEING RADIALLY SPACED TO PROVIDE A HUB PASSAGE THEREBETWEEN FOR CONDUCTING EXHAUST GASES REARWARDLY FROM THE UNIT, AND A PLURALITY OF STRUTS IN SAID PASSAGE EXTENDING BETWEEN AND CONNECTING SAID SLEEVES, SAID STRUTS BEING ANGULARLY DISPOSED RELATIVE TO THE AXIS OF SAID SLEEVES AND HAVING THE FORWARD EDGES THEREOF LEAD THE CORRESPONDING REARWARD EDGES ROTATIVELY WHEN THE PROPELLER ROTATES IN SAID OPPOSITE DIRECTION WHEREBY TO FORM AN IMPELLER WITHIN THE HUB PASSAGE ADAPTED TO PUSH WATER FROM THE INTERIOR THEREOF DURING REVERSE OPERATION OF THE UNIT.
Claim 2
Dependent Claim
136 words
IN A PROPULSION UNIT FOR A BOAT; A PROPELLER; MEANS TO ROTATE THE PROPELLER SELECTIVELY IN ONE DIRECTION FOR FORWARD OPERATION OF THE PROPULSION UNIT AND IN THE OPPOSITE DIRECTION FOR REVERSE OPERATION OF THE UNIT; SAID PROPELLER COMPRISING AN OUTER HUB SLEEVE AND AN INNER HUB SLEEVE, SAID SLEEVES BEING RADIALLY SPACED TO PROVIDE A HUB PASSAGE THEREBETWEEN FOR CONDUCTING EXHAUST GASES REARWARDLY FROM THE UNIT, AND A PLURALITY OF STRUTS IN SAID PASSAGE EXTENDING BETWEEN AND CONNECTING SAID SLEEVES, SAID STRUTS BEING ANGULARLY DISPOSED RELATIVE TO THE AXIS OF SAID SLEEVES AND HAVING THE FORWARD EDGES THEREOF LEAD THE CORRESPONDING REARWARD EDGES ROTATIVELY WHEN THE PROPELLER ROTATES IN SAID OPPOSITE DIRECTION WHEREBY TO FORM AN IMPELLER WITHIN THE HUB PASSAGE ADAPTED TO PUSH WATER FROM THE INTERIOR THEREOF DURING REVERSE OPERATION OF THE UNIT.
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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |