US3589326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inboard outboard drive
Assignee: Individual
•
Filing: 1969-07-30
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Granted: 1971-06-29
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Expires: 1989-07-30
Abstract
Abstract A stern drive for a boat having an inboard engine and an outboard drive unit wherein the inboard drive shaft is connected to the propeller shaft by a two section power transmission shaft, the first section being connected to the engine drive shaft at one end by a first universal joint and connected to the second section by a second universal joint. The second section of the power transmission shaft inclines downwardly and rearwardly and is connected to the propeller shaft at an acute angle by two pair of bevel gears. The drive unit is supported for universal pivoting movement about the axis of the first universal joint. A steering mechanism and a shock-absorbing unit are enclosed within the casing for the drive unit.
Inventors
- 👤 Aldo Celli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:52
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/02; B63H23/04; B63H20/00; B63H20/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
265 words
An inboard outboard drive for a boat having an inboard engine with a drive shaft extending rearwardly tHrough a transom of the boat which comprises a casing adapted to be mounted on the transom of the boat for universal pivoting movement; a first universal joint within said casing to which said drive shaft is adapted to be connected; a first driven shaft journaled in said casing about a fixed axis and connected at one end of said universal joint; a second driven shaft journaled in said casing about a fixed axis which is inclined downwardly and rearwardly at an acute angle to the horizontal when the casing is in a normal drive position; a second universal joint connected to the upper end of said inclined shaft and with the other end of said first driven shaft; a propeller shaft journaled in said casing for rotation about a fixed axis inclined to the axis of the second driven shaft at an acute angle and extending generally horizontally when the casing is in said normal drive position and means including bevel gearing interconnecting the lower end of said inclined shaft and said propeller shaft. CM,2Nboard outboard drive as called for in claim 1 wherein said last-mentioned means comprises a pair of shafts parallel to said inclined shaft, means forming a drive connection between said driving shaft and said pair of shafts, said bevel gearing comprising a bevel gear at the lower end of each of said parallel shafts and a pair of bevel gears spaced axially along the propeller shaft and meshing with said first-mentioned bevel gears.
Claim 2
Dependent Claim
42 words
An inboard outboard drive as called for in claim 2 wherein said pair of parallel shafts comprises relatively small diameter torsion shafts having one end supported for slight axial movement in response to relative torsional deflection between opposite ends of the shafts.
Claim 3
Dependent Claim
31 words
An inboard outboard drive as called for in claim 2 wherein said pair of parallel shafts are inclined to the axis of the propeller shaft at an angle of about 60*.
Claim 4
Dependent Claim
29 words
An inboard outboard drive as called for in claim 2 wherein said means connecting the inclined shaft and said pair of parallel shafts comprises a plurality of spur gears.
Claim 5
Dependent Claim
57 words
An inboard outboard drive as called for in claim 2 wherein said means connecting the inclined shaft and said pair of parallel shafts includes a pair of spur gears, one on each of said shafts, and an intermediate spur gear meshing with said pair of spur gears for driving said pair of shafts in the same direction.
Claim 6
Dependent Claim
64 words
An inboard outboard drive as called for in claim 2 wherein each of said parallel shafts includes a tubular shaft journaled at opposite ends in said casing and an inner shaft within each tubular shaft, said first-mentioned bevel gears being fixed to the lower ends of said inner shafts, said inner shafts having a splined connection with said tubular shafts at their upper ends.
Claim 7
Dependent Claim
31 words
An inboard outboard drive as called for in claim 1 wherein said first driven shaft is journaled in said casing with its axis extending in a downwardly and rearwardly inclined direction.
Claim 8
Dependent Claim
29 words
An inboard outboard drive as called for in claim 1 wherein the axes of the inclined shaft and the propeller shaft intersect at an inclined angle of about 60*.
Claim 9
Dependent Claim
33 words
An inboard outboard drive as called for in claim 9 wherein said first driven shaft inclines downwardly and rearwardly from said first universal joint at an angle of about 30* from the horizontal.
Claim 10
Dependent Claim
117 words
An inboard outboard drive as called for in claim 1 wherein said inclined shaft is of tubular shape adjacent its lower end and including an internal shaft disposed within the tubular portion of the inclined shaft, said internal shaft projecting axially beyond the lower end of the tubular shaft, said bevel gearing comprising a bevel gear on the projecting end of said internal shaft meshing with a bevel gear on the propeller shaft, the upper end of the internal shaft having an axially splined connection with said inclined shaft and the lower end of said internal shaft being capable of torsionally flexing relative to the upper end of the internal shaft and relatiVe to the tubular shaft.
Claim 11
Dependent Claim
102 words
In an inboard outboard drive for a boat the combination comprising, a support bracket adapted to be fixedly mounted on the transom of the boat; a steering bracket journaled on said support bracket for pivotal movement about a generally vertical axis; a casing journaled on said steering bracket for pivotal movement about a generally horizontal axis; a drive unit in said casing including a propeller shaft; means for connecting said drive unit with the drive shaft of the inboard engine; and extensible shock-absorbing hydraulic cylinder means connected at one end with said casing and at the other end with said steering bracket.
Claim 12
Dependent Claim
102 words
In an inboard outboard drive for a boat the combination comprising, a support bracket adapted to be fixedly mounted on the transom of the boat; a steering bracket journaled on said support bracket for pivotal movement about a generally vertical axis; a casing journaled on said steering bracket for pivotal movement about a generally horizontal axis; a drive unit in said casing including a propeller shaft; means for connecting said drive unit with the drive shaft of the inboard engine; and extensible shock-absorbing hydraulic cylinder means connected at one end with said casing and at the other end with said steering bracket.
Claim 13
Dependent Claim
46 words
The combination set forth in claim 12 wherein said shock-absorbing cylinder means comprises at least one double-acting hydraulic cylinder and including a fluid pressure supply source optionally connectable with opposite ends of said hydraulic cylinder for tilting said casing upwardly and downwardly about said horizontal axis.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |