US3610197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorboat
Assignee: Individual
•
Filing: 1969-07-17
•
Granted: 1971-10-05
•
Expires: 1989-07-17
Abstract
Abstract A stabilizing tube, fixed to the hull of a boat below the waterline thereof with an inlet and an outlet respectively at the bow and the stern of the boat, has its midsection provided with water-expulsion holes which can be obstructed by a slider and open into the surrounding water to facilitate transverse steering. A rudder is mounted near the outlet end of the tube while a propeller in the tube at its inlet end serves to drive the boat forward or backward. The flow of water through the tube can be blocked by a valve just rearwardly of the expulsion holes.
Inventors
- 👤 Gregor Sporri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:03
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
A stabilizing system for a boat having a hull, comprising a tube fixed to the hull longitudinally of the boat being the waterline thereof, said tube having an inlet and an outlet respectively at the bow and the stern of the boat and having a plurality of axially spaced lateral holes in its midsection opening directly into the surrounding water; propulsion means adjacent said inlet; shutter mEans in said tube intermediate said holes and said outlet for selectively blocking the flow of water through said tube; a rudder movably connected to the hull and extending outside said tube adjacent said outlet; slider means in said tube juxtaposed with said midsection for selectively opening and closing said holes, said slider means having axially spaced openings respectively alignable with said holes; and operating means for axially shifting said slider means between an obstructing and a nonobstructing position.
Claim 2
Dependent Claim
145 words
A stabilizing system for a boat having a hull, comprising a tube fixed to the hull longitudinally of the boat being the waterline thereof, said tube having an inlet and an outlet respectively at the bow and the stern of the boat and having a plurality of axially spaced lateral holes in its midsection opening directly into the surrounding water; propulsion means adjacent said inlet; shutter mEans in said tube intermediate said holes and said outlet for selectively blocking the flow of water through said tube; a rudder movably connected to the hull and extending outside said tube adjacent said outlet; slider means in said tube juxtaposed with said midsection for selectively opening and closing said holes, said slider means having axially spaced openings respectively alignable with said holes; and operating means for axially shifting said slider means between an obstructing and a nonobstructing position.
Claim 3
Dependent Claim
24 words
A system as defined in claim 1 wherein said shutter means comprises a rotatable valve disk and a lever linked therewith for rotating same.
Claim 4
Dependent Claim
30 words
A system as defined in claim 1 wherein said slider means comprises an elongated perforated plate, said operating means including a handle engaging said plate and projecting from said tube.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |