US3125977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reducing the wave making resistance for boats
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
•
Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:32
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/32; B63B1/34; B63B1/38; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
AN APPARATUS FOR REDUCING THE WAVE MAKING RESISTANCE FOR BOATS COMPRISING A HULL HAVING AN INTAKE ON BOTH SIDES OF ITS BOTTOM, A FIRST GUIDE PIPE EXTENDING INTO SAID HULL FROM EACH OF SAID INTAKES, A PUMP DISPOSED IN SAID HULL AND RECEIVING THE INNER END OF SAID GUIDE PIPE, SAID PUMP BEING ADAPTED TO BE DRIVEN AND TO DRAW SEAWATER INTO SAID INTAKES, AN OUTLET PIPE CONNECTED TO THE OUTPUT END OF SAID PUMP, SAID HULL INCLUDING AN EJECTION CHAMBER, THE FREE END OF SAID OUTLET PIPE OPENING INTO SAID EJECTION CHAMBER, A PLURALITY OF GUIDE WALLS DISPOSED IN SAID EJECTION CHAMBER AND GUIDING A WATER STREAM EMERGING FROM SAID PUMP THROUGH SAID EJECTION CHAMBER, THE LATTER HAVING A PLURALITY OF SLITS AT ITS REAR END FOR EJECTION OF SAID SEAWATER FROM SAID EJECTION CHAMBER, A PLURALITY OF BRANCH PIPES AND A TRANSVERSE PIPE DISPOSED ABOVE SAID EJECTION CHAMBER AND COMMUNICATING WITH SAID SLITS, SAID BRANCH PIPES COMMUNICATING WITH SAID TRANSVERSE PIPE, AN AIR COMPRESSOR DISPOSED IN SAID HULL, A SECOND GUIDE PIPE CONNECTING SAID AIR COMPRESSOR WITH SAID BRANCH PIPES, AND SAID BRANCH PIPES HAVING GUIDE VANES OF SUBSTANTIALLY U-SHAPED FOR GUIDING AIR EMERGING FROM SAID AIR COMPRESSOR TOWARDS SAID SLITS.
Claim 2
Independent Claim
203 words
AN APPARATUS FOR REDUCING THE WAVE MAKING RESISTANCE FOR BOATS COMPRISING A HULL HAVING AN INTAKE ON BOTH SIDES OF ITS BOTTOM, A FIRST GUIDE PIPE EXTENDING INTO SAID HULL FROM EACH OF SAID INTAKES, A PUMP DISPOSED IN SAID HULL AND RECEIVING THE INNER END OF SAID GUIDE PIPE, SAID PUMP BEING ADAPTED TO BE DRIVEN AND TO DRAW SEAWATER INTO SAID INTAKES, AN OUTLET PIPE CONNECTED TO THE OUTPUT END OF SAID PUMP, SAID HULL INCLUDING AN EJECTION CHAMBER, THE FREE END OF SAID OUTLET PIPE OPENING INTO SAID EJECTION CHAMBER, A PLURALITY OF GUIDE WALLS DISPOSED IN SAID EJECTION CHAMBER AND GUIDING A WATER STREAM EMERGING FROM SAID PUMP THROUGH SAID EJECTION CHAMBER, THE LATTER HAVING A PLURALITY OF SLITS AT ITS REAR END FOR EJECTION OF SAID SEAWATER FROM SAID EJECTION CHAMBER, A PLURALITY OF BRANCH PIPES AND A TRANSVERSE PIPE DISPOSED ABOVE SAID EJECTION CHAMBER AND COMMUNICATING WITH SAID SLITS, SAID BRANCH PIPES COMMUNICATING WITH SAID TRANSVERSE PIPE, AN AIR COMPRESSOR DISPOSED IN SAID HULL, A SECOND GUIDE PIPE CONNECTING SAID AIR COMPRESSOR WITH SAID BRANCH PIPES, AND SAID BRANCH PIPES HAVING GUIDE VANES OF SUBSTANTIALLY U-SHAPED FOR GUIDING AIR EMERGING FROM SAID AIR COMPRESSOR TOWARDS SAID SLITS.
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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) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |