US3147730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential rudder control system
Assignee: NAUTEC CORP
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Filing: 1963-04-03
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Granted: 1964-09-08
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Expires: 1983-04-03
Abstract
No abstract record available.
Inventors
- 👤 Franz R Specht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:44
CPC Classifications
B; B63; B63H; B63H25/00; B63H25/06; B63H25/08; B63H25/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A TWIN SCREW TWIN RUDDER BOAT A DIFFERENTIAL RUDDER ACTUATING MECHANISM FOR ARTICULATING THE INBOARD RUDDER IN A TURN WHILE MAINTAINING THE OUTBOARD RUDDER IN SUBSTANTIALLY NEUTRAL POSITION COMPRISING A RUDDER ARM ON EACH RUDDER EXTENDING NORMALLY IN A FORWARD DIRECTION, A STEERING CRANK MEMBER DISPOSED BETWEEN SAID RUDDER ARMS AND HAVING A PAIR OF CRANK ARMS EACH NORMALLY DISPOSED TOWARD A RESPECTIVE ONE OF SAID RUDDER ARMS AT AN ANGLE OF FROM ABOUT 10 TO ABOUT 45 DEGREES RELATIVE TO SAID RUDDER ARMS, SAID CRANK ARMS BEING ABOUT 25% SHORTER THAN SAID RUDDER ARMS, LINKAGE MEANS INTERCONNECTING EACH CRANK ARM WITH ITS RESPECTIVE RUDDER ARM, AND MEANS ON SAID STEERING CRANK MEMBER FOR INTERCONNECTION WITH THE STEERING MEANS OF SAID BOAT.
Claim 2
Dependent Claim
123 words
IN A TWIN SCREW TWIN RUDDER BOAT A DIFFERENTIAL RUDDER ACTUATING MECHANISM FOR ARTICULATING THE INBOARD RUDDER IN A TURN WHILE MAINTAINING THE OUTBOARD RUDDER IN SUBSTANTIALLY NEUTRAL POSITION COMPRISING A RUDDER ARM ON EACH RUDDER EXTENDING NORMALLY IN A FORWARD DIRECTION, A STEERING CRANK MEMBER DISPOSED BETWEEN SAID RUDDER ARMS AND HAVING A PAIR OF CRANK ARMS EACH NORMALLY DISPOSED TOWARD A RESPECTIVE ONE OF SAID RUDDER ARMS AT AN ANGLE OF FROM ABOUT 10 TO ABOUT 45 DEGREES RELATIVE TO SAID RUDDER ARMS, SAID CRANK ARMS BEING ABOUT 25% SHORTER THAN SAID RUDDER ARMS, LINKAGE MEANS INTERCONNECTING EACH CRANK ARM WITH ITS RESPECTIVE RUDDER ARM, AND MEANS ON SAID STEERING CRANK MEMBER FOR INTERCONNECTION WITH THE STEERING MEANS OF SAID BOAT.
References Cited (Backward Citations)
GB277022A
Cited
US1717286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |