Patent US4919285A successfully refreshed from Google Patents.
Patent US3099240A successfully refreshed from Google Patents.
US3099240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat construction
Assignee: Individual
•
Filing: 1961-05-24
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Granted: 1963-07-30
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Expires: 1981-05-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles A Montague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:16
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/32; B63B1/34; B63B1/36; B63H; B63H5/00; B63H5/07; B63H5/16; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A BOAT COMPRISING A HULL, A PLURALITY OF SPACED PROPELLING UNITS ATTACHED TO SAID HULL FOR THE PROPELLING THEREOF, SAID PROPELLING UNITS INCLUDING PROPELLERS ROTATABLY MOUNTED FOR ROTATION ABOUT SUBSTANTIALLY HORIZONTAL AXES, MEANS FOR ROTATABLY DRIVING SID PROPELLERS, A PLURALITY OF CHANNEL-SHAPED MEMBERS, EACH OF SAID CHANNEL-SHAPED MEMBERS BEING OF SUBSTANTIALLY THE SHAPE OF A PORTION OF A HOLLOW CYLINDER AND HAVING A SUBSTANTIALLY HORIZONTAL AXIS, SAID CHANNEL-SHAPED MEMBERS BEING RESPECTIVELY MOUNTED SUBSTANTIALLY BELOW SAID PROPELLERS WITH THE AXES THEREOF BEING RESPECTIVELY SUBSTANTIALLY COINCIDENT WITH THE AXES OF ROTAWTION OF SAID PROPELLERS AND WITH SAID CHANNEL-SHAPED MEMBERS EXTENDING UPWARDLY ON OPPOSITE SIDES OF SAID PROPELLERS TO PLACE OF TERMINATION SUBSTANTIALLY AT A LEVEL WITH THE MIDDLE OF SAID PROPELLERS SO THAT SAID CHANNEL-SHAPED MEMBERS RESPECTIVELY SUBSTANTTIALY SURROUND THE LOWER HALVES OF THE PATH OF ROTATION OF SAID PROPELLERS IN CLOSELY SPACED RELATIONSHIP THERETO, WHEREBY THE FLOW OF WATER FROM SAID PROPELLERS RESPECTIVELY OVER SAID CHANNEL-SHAPED MEMBERS CAUSES AN UPWARD LIFT OF SAID HULL, AND ADJUSTABLE VANE MEANS SUPPORTED FROM SAID HULL AND EXTENDING THEREBELOW FOR ADJUSTING THE ATTITUDE OF SAID BOAT,
Claim 2
Dependent Claim
181 words
A BOAT COMPRISING A HULL, A PLURALITY OF SPACED PROPELLING UNITS ATTACHED TO SAID HULL FOR THE PROPELLING THEREOF, SAID PROPELLING UNITS INCLUDING PROPELLERS ROTATABLY MOUNTED FOR ROTATION ABOUT SUBSTANTIALLY HORIZONTAL AXES, MEANS FOR ROTATABLY DRIVING SID PROPELLERS, A PLURALITY OF CHANNEL-SHAPED MEMBERS, EACH OF SAID CHANNEL-SHAPED MEMBERS BEING OF SUBSTANTIALLY THE SHAPE OF A PORTION OF A HOLLOW CYLINDER AND HAVING A SUBSTANTIALLY HORIZONTAL AXIS, SAID CHANNEL-SHAPED MEMBERS BEING RESPECTIVELY MOUNTED SUBSTANTIALLY BELOW SAID PROPELLERS WITH THE AXES THEREOF BEING RESPECTIVELY SUBSTANTIALLY COINCIDENT WITH THE AXES OF ROTAWTION OF SAID PROPELLERS AND WITH SAID CHANNEL-SHAPED MEMBERS EXTENDING UPWARDLY ON OPPOSITE SIDES OF SAID PROPELLERS TO PLACE OF TERMINATION SUBSTANTIALLY AT A LEVEL WITH THE MIDDLE OF SAID PROPELLERS SO THAT SAID CHANNEL-SHAPED MEMBERS RESPECTIVELY SUBSTANTTIALY SURROUND THE LOWER HALVES OF THE PATH OF ROTATION OF SAID PROPELLERS IN CLOSELY SPACED RELATIONSHIP THERETO, WHEREBY THE FLOW OF WATER FROM SAID PROPELLERS RESPECTIVELY OVER SAID CHANNEL-SHAPED MEMBERS CAUSES AN UPWARD LIFT OF SAID HULL, AND ADJUSTABLE VANE MEANS SUPPORTED FROM SAID HULL AND EXTENDING THEREBELOW FOR ADJUSTING THE ATTITUDE OF SAID BOAT,
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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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |