US3077229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for boat propellers
Assignee: Individual
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Filing: 1961-07-17
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Granted: 1963-02-12
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Expires: 1981-07-17
Abstract
No abstract record available.
Inventors
- 👤 Leo A Heintzelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:26
CPC Classifications
B; B63; B63H; B63H3/00; B63H3/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
AN ATTACHMENT FOR A BOAT PROPELLER COMPRISING AN EXTENSION BLADE FOR EACH BLADE OF THE PROPELLER, EACH OF SAID EXTENSION BLADES HAVING A CURVED OUTER EDGE ADAPTED TO GENERALLY CONFORM TO THE OUTER EDGE OF A PROPELLER BLADE, MEANS AT ONE END OF EACH EXTENSION BLADE ADAPTED TO PIVOTALLY MOUNT IT ON A PROPELLER BLADE, RESILIENT MEANS INTERCONNECTING SAID PIVOTAL MOUNTING MEANS AND A PORTION OF SAID EXTENSION BLADE ADJACENT SAID PIVOTAL MOUNTING MEANS, SAID RESILIENT MEANS BEING ADAPTED TO ENGAGE SAID EXTENSION BLADE AND SAID PIVOTAL MOUNTING MEANS TO RESILIENTLY URGE THE EXTENSION BLADE TO A RETRACTED POSITION ALONGSIDE OF THE PROPELLER BLADE.
Claim 2
Dependent Claim
104 words
AN ATTACHMENT FOR A BOAT PROPELLER COMPRISING AN EXTENSION BLADE FOR EACH BLADE OF THE PROPELLER, EACH OF SAID EXTENSION BLADES HAVING A CURVED OUTER EDGE ADAPTED TO GENERALLY CONFORM TO THE OUTER EDGE OF A PROPELLER BLADE, MEANS AT ONE END OF EACH EXTENSION BLADE ADAPTED TO PIVOTALLY MOUNT IT ON A PROPELLER BLADE, RESILIENT MEANS INTERCONNECTING SAID PIVOTAL MOUNTING MEANS AND A PORTION OF SAID EXTENSION BLADE ADJACENT SAID PIVOTAL MOUNTING MEANS, SAID RESILIENT MEANS BEING ADAPTED TO ENGAGE SAID EXTENSION BLADE AND SAID PIVOTAL MOUNTING MEANS TO RESILIENTLY URGE THE EXTENSION BLADE TO A RETRACTED POSITION ALONGSIDE OF THE PROPELLER BLADE.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |