Patent US3996875A successfully refreshed from Google Patents.
US3996875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intregral hydraulic pump and wheel steering mechanism for sailboats
Assignee: Individual
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Filing: 1974-12-04
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Granted: 1976-12-14
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Expires: 1994-12-04
Abstract
Abstract An improvement in a steering assembly for navigating a boat, such as a sailboat, having a vertically movable centerboard and/or an adjustable backstay either or both of which are movable by a hydraulic means including a hydraulic pump whereby to raise or lower the centerboard and/or rake the mast attached to the backstay, the boat having a steering wheel connected to a hollow steering wheel shaft which shaft in turn is connected to a steering sprocket. The improvement resides in means for simultaneously either (a) raising or lowering the centerboard or (b) adjusting the tension on the backstay and steering which means comprises a hydraulic pump shaft connected to a hydraulic pump, said pump shaft disposed through the hollow steering wheel shaft, said shaft terminating at the steering wheel where it is connected to an actuating means.
Inventors
- 👤 Martens Isenberg, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:53
CPC Classifications
B; B63; B63B; B63B41/00; B63H; B63H9/00; B63H9/04; B63H9/08; B63H9/10; B63B35/00; B63B2035/009
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
96 words
In a steering assembly for navigating a boat having a vertically movable centerboard movable by a hydraulic means including a hydraulic pump whereby to raise or lower said centerboard, said boat having a steering wheel connected to a hollow steering wheel shaft which shaft in turn is connected to a steering sprocket, the improvement for simultaneously raising or lowering the centerboard which comprises a hydraulic pump shaft disposed through said steering wheel shaft, said hydraulic pump shaft connected to an actuating means at said steering wheel and at its opposite end connected to said hydraulic pump.
Claim 2
Dependent Claim
96 words
In a steering assembly for navigating a boat having a vertically movable centerboard movable by a hydraulic means including a hydraulic pump whereby to raise or lower said centerboard, said boat having a steering wheel connected to a hollow steering wheel shaft which shaft in turn is connected to a steering sprocket, the improvement for simultaneously raising or lowering the centerboard which comprises a hydraulic pump shaft disposed through said steering wheel shaft, said hydraulic pump shaft connected to an actuating means at said steering wheel and at its opposite end connected to said hydraulic pump.
Claim 3
Dependent Claim
42 words
A steering assembly for a boat according to claim 1 wherein disposed within said hollow steering wheel shaft there is a hollow sleeve running coaxially with said hollow steering wheel shaft and said hydraulic pump shaft is contained within said hollow sleeve.
Claim 4
Dependent Claim
56 words
A steering assembly for a boat according to claim 2 wherein there is at least one bearing disposed between the outer wall of said sleeve and the inner wall of said hollow steering wheel shaft and there is at least one additional bearing disposed between said hydraulic pump shaft and the inner wall of said sleeve.
Claim 5
Dependent Claim
57 words
A steering assembly for a boat according to claim 3 wherein there are a pair of annular bearings disposed between the outer wall of said sleeve and the inner wall of said hollow steering wheel shaft and there are a pair of annular bearings disposed between said hydraulic pump shaft and the inner wall of said sleeve.
Claim 6
Dependent Claim
30 words
A steering assembly for a boat according to claim 3 wherein said actuating means comprises a lever linkably connected to and pivotally movable with respect to said hydraulic pump shaft.
Claim 7
Dependent Claim
28 words
A steering assembly for a boat according to claim 5 wherein said hydraulic pump shaft is linkably connected to an arm of a piston of said hydraulic pump.
Claim 8
Dependent Claim
28 words
A steering assembly according to claim 1 wherein said hydraulic pump is in a hydraulic system including a piston connected to means for raising and lowering a centerboard.
Claim 9
Dependent Claim
70 words
A steering assembly according to claim 1 wherein said hydraulic pump is in a first hydraulic system comprising a first piston and means for increasing or decreasing tension on a backstay, and a second system comprising a second piston on means for raising or lowering a centerboard, said systems and said pump interconnected by a valve which allows fluid from said pump to feed only said first or second system.
Claim 10
Dependent Claim
92 words
In a steering assembly for navigating a boat having an adjustable backstay movable by a hydraulic means including a hydraulic pump whereby to hydraulically adjust a backstay thereon, said boat having a steering wheel connected to a hollow steering wheel shaft which shaft, in turn, is connected to a steering sprocket, the improvement for adjusting said backstay which comprises a hydraulic pump shaft disposed through said steering wheel shaft, said hydraulic pump shaft connected to an actuating means at said steering wheel and at its opposite end connected to said hydraulic pump.
Claim 11
Dependent Claim
92 words
In a steering assembly for navigating a boat having an adjustable backstay movable by a hydraulic means including a hydraulic pump whereby to hydraulically adjust a backstay thereon, said boat having a steering wheel connected to a hollow steering wheel shaft which shaft, in turn, is connected to a steering sprocket, the improvement for adjusting said backstay which comprises a hydraulic pump shaft disposed through said steering wheel shaft, said hydraulic pump shaft connected to an actuating means at said steering wheel and at its opposite end connected to said hydraulic pump.
Claim 12
Dependent Claim
38 words
A steering assembly according to claim 9 wherein said hydraulic pump is in a hydraulic system including a piston connected to means for increasing or decreasing tension on a backstay of a sailboat whereby to rake the mast.
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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |