A stern drive for a boat is provided, which comprises an outer structure that is attachable to the stern of a boat, a housing supported in the outer structure, a gear set and reversing clutch inside the housing, said gear set including a pinion that is rotatable about a transverse axis and an output
A stern drive for a boat is provided, which comprises an outer structure that is attachable to the stern of a boat, a housing supported in the outer structure, a gear set and reversing clutch inside the housing, said gear set including a pinion that is rotatable about a transverse axis and an output shaft that extends downwardly within a fairing. The housing is rotatable within the outer structure for steering purposes and the fairing and output shaft are rotatable about the transverse axis of said pinion thereby to permit raising, lowering and trimming of the fairing. The clutch includes a selector rod extending along a central passage defined within a transverse shaft, with selector pins extending radially outwardly into a clutch element.
대표청구항▼
The invention claimed is: 1. A stern drive which comprises: an outer structure that is attachable to the stern of a boat; a housing supported in the outer structure; a gear set and reversing clutch inside the housing, said gear set including a pinion that is rotatable about a transverse axis; and a
The invention claimed is: 1. A stern drive which comprises: an outer structure that is attachable to the stern of a boat; a housing supported in the outer structure; a gear set and reversing clutch inside the housing, said gear set including a pinion that is rotatable about a transverse axis; and an output shaft that extends downwardly within a fairing; wherein the housing is rotatable within the outer structure for steering purposes and the fairing and output shaft are rotatable about the transverse axis of said pinion thereby to permit raising, lowering and trimming of the fairing. 2. A stern drive as claimed in claim 1 wherein the axis of rotation of the housing relative to the outer structure, extends at an inclined angle. 3. A stern drive as claimed in claim 1, wherein said gear set and reversing clutch comprises: a first bevel pinion, connectable to a motor; first and second bevel gears that mesh with the bevel pinion on diametrically opposed sides of the bevel pinion and that are coaxial, each of the bevel gears defining a conical clutch face; a first transverse shaft passing coaxially through the bevel gears; a clutch element disposed on the first transverse shaft between the bevel gears, said clutch element defining two conical surfaces, each of which is complemental to the clutch face one of the bevel gears; a helical pinion on said first transverse shaft; a helical gear meshing with said helical pinion and carried by a second transverse shaft; and a second bevel pinion carried by the second transverse shaft and meshing with a third bevel gear carried by said output shaft, said fairing rotating about the axis of the second transverse shaft. 4. A stern drive as claimed in claim 3, wherein the output shaft is in an elongate casing which extends upwardly from said fairing and which is itself extended by a pivot structure to which said rod is connected. 5. A stern drive as claimed in claim 4, wherein the pivot structure is mounted on said second transverse shaft and rotates about it during lifting and lowering of the fairing and during trimming. 6. A stern drive as claimed in claim 3, wherein the first transverse shaft defines helical splines with which the clutch element is in engagement, the first transverse shaft defines a central passage that extends axially form at least one of its ends and defines at least one internal recess that extends in a radial direction, wherein the stern drive further includes a selector rod, disposed coaxially within the central passage of the first transverse shaft and being axially slidable within the central passage and at least one selector pin extending transversely form the selector rod, at least one slot being defined in the first transverse shaft, extending from the central passage to the outside of the shaft and having an orientation that is generally aligned with the helical splines of the shaft, the selector pin extending from the selector rod, through the slot and into the internal recess defined in the clutch element. 7. A stern drive as claimed in claim 1, wherein the fairing is displaced by a ram the cylinder of which forms part of said housing and the rod of which is connected to a structure which forms an extension of said fairing. 8. A stern drive as claimed in claim 1, wherein said output shaft drives a pinion which meshes with a gear on a further output shaft that is parallel to the first mentioned output shaft, the output shafts driving co-axial propeller shafts, the arrangement being such that the output shafts rotate in opposite directions and the propeller shafts also contra-rotate. 9. A stern drive as claimed in claim 8, wherein the stern drive includes a third output shaft, driven from the pinion. 10. A stern drive as claimed in claim 1, wherein said fairing comprises a pair of side sections which are attached together, and a top section which is attached to the side sections. 11. A stern drive including a gear set and reversing clutch comprising: a bevel pinion, connectable to an input shaft; first and second bevel gears that mesh with the bevel pinion on diametrically opposed sides of the bevel pinion and that are coaxial, each of the bevel gears defining a conical clutch face; a transverse shaft passing coaxially through the bevel gears, said transverse shaft defining helical splines and a central passage that extends axially form at least one of its ends; and a clutch element disposed on the transverse shaft between the bevel gears in engagement with the helical splines, said clutch element defining at least one internal recess, that extends in a radial direction, and said clutch element defining two conical surfaces, each of which is complemental to the clutch face one of the bevel gears; wherein the reversing clutch includes a selector rod, disposed coaxially within the central passage of the transverse shaft and being axially slidable within the central passage; and at least one selector pin, extending transversely form the selector rod; at least one slot being defined in the transverse shaft, extending from the central passage to the outside of the shaft and having an orientation that is generally aligned with the helical splines of the shaft, the selector pin extending from the selector rod, through the slot, into the internal recess defined in the clutch element. 12. A stern drive as claimed in claim 11, wherein the reversing clutch includes two selector pins extending in diametrically opposing directions from the selector rod, each passing through a separate slot and into a separate internal recess of the clutch element. 13. A stern drive as claimed in claim 12, wherein each internal recess in the clutch element extends to an outer circumference of the clutch element and each selector pin is held captive within its internal recess, by a retaining element. 14. A stern drive as claimed in claim 11, wherein the clutch includes a diaphragm, connected to a plunger which is configured to effect axial displacement of the selector rod. 15. A stern drive as claimed in claim 14, wherein the diaphragm is disposed adjacent the end of the transverse shaft from which the central passage extends. 16. Propulsion apparatus for a boat having a rearwardly and upwardly inclined transom, comprising: a motor operative to selectively generate rotational power about an output axis; mounting structure for transversely securing said motor to an inboard side portion of the transom in a manner such that said output axis extends transversely through the transom; and a stern drive unit positionable to extend rearwardly from the transom and comprising: an input shaft connectable to said motor to receive rotational power therefrom, an output shaft structure spaced apart from said input shaft, first and second parallel intermediate shafts interposed between said input shaft and said output shaft structure and extending transversely thereto, a gearing system rotationally coupling said input shaft to said first intermediate shaft, said first intermediate shaft to said second intermediate shaft, and said second intermediate shaft to said output shaft structure, a fairing having a lower end portion, and a propeller structure rotationally coupled to said lower end portion of said fairing, said output shaft structure extending through said fairing and being drivingly coupled to said propeller structure, said fairing and said output shaft structure being rotatable about the axis of said second intermediate shaft for raising/lowering/trimming purposes, and said fairing, said output shaft structure and said first and second intermediate shafts being rotatable about the axis of said input shaft for steering purposes. 17. Motor-drivable boat apparatus comprising: a boat having a rearwardly and upwardly inclined transom; and boat propulsion apparatus comprising a motor transversely secured to an inboard side portion of said transom and operative to selectively generate rotational power about an output axis extending transversely through said transom, and a stern drive unit projecting rearwardly from said transom and comprising: an input shaft connectable to said motor to receive rotational power therefrom, an output shaft structure spaced apart from said input shaft, first and second parallel intermediate shafts interposed between said input shaft and said output shaft structure and extending transversely thereto, a gearing system rotationally coupling said input shaft to said first intermediate shaft, said first intermediate shaft to said second intermediate shaft, and said second intermediate shaft to said output shaft structure, a fairing having a lower end portion, and a propeller structure rotationally coupled to said lower end portion of said fairing, said output shaft structure extending through said fairing and being drivingly coupled to said propeller structure, said fairing and said output shaft structure being rotatable about the axis of said second intermediate shaft for raising/lowering/trimming purposes, and said fairing, said output shaft structure and said first and second intermediate shafts being rotatable about the axis of said input shaft for steering purposes. 18. Propulsion apparatus for a boat having a rearwardly and upwardly inclined transom, comprising: a motor operative to selectively generate rotational power about an output axis; mounting structure for transversely securing said motor to an inboard side portion of the transom in a manner such that said output axis extends transversely through the transom; and a stern drive unit comprising: a fairing positionable to extend rearwardly from the transom and having a lower end portion, a propeller structure rotationally coupled to said lower end portion of said fairing, and a drive train rotatably coupling said motor and said propeller structure, said drive train extending at an inclined angle from said transom and having a first portion drivably coupled to said motor, and a second portion extending through said fairing and being drivingly coupled to said propeller structure, said fairing and said second portion of said drive train being rotatable about said output axis and about a portion of said drive train around a generally horizontal axis transverse to said output axis. 19. The propulsion apparatus of claim 18 wherein: said drive train couples said motor and said propeller structure without the use of any U-joints or constant velocity joints. 20. Motor-drivable boat apparatus comprising: a boat having a rearwardly and upwardly inclined transom; and boat propulsion apparatus comprising a motor transversely secured to an inboard side portion of said transom and operative to selectively generate rotational power about an output axis extending transversely through said transom, and a stern drive unit comprising: a fairing projecting rearwardly from the transom and having a lower end portion, a propeller structure rotationally coupled to said lower end portion of said fairing, and a drive train rotatably coupling said motor and said propeller structure, said drive train extending at an inclined angle from said transom and having a first portion drivably coupled to said motor, and a second portion extending through said fairing and being drivingly coupled to said propeller structure, said fairing and said second portion of said drive train being rotatable about said output axis and about a portion of said drive train around a generally horizontal axis transverse to said output axis. 21. The motor-driven boat apparatus of claim 20 wherein: said drive train couples said motor and said propeller structure without the use of any U-joints or constant velocity joints.
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Hall Charles B. (Ingleside IL) McBride Edward D. (Waukegan IL) Young Robert F. (Kenosha WI), Hydraulic system for outboard motor with sequentially operating tilt and trim means.
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Bland Gerald F. (Glenview IL) Mondek Martin J. (Wonder Lake IL) Zdanowicz Lawrence E. (Waukegan IL), Marine propulsion device with removable clutch assembly.
Idzikowski George D. (Oshkosh WI) Jaszewski Wayne M. (Jackson WI) Phillips George E. (Oshkosh WI), Midsection and cowl assembly for an outboard marine drive.
Mondek Martin J. (Wonder Lake IL) Sullivan Donald K. (Prospect Heights IL) Burmeister Scott N. (Gurnee IL) Blanchard Clarence E. (Kenosha IL) Nerstrom James S. (Green Oaks IL), Outboard motor cover assembly.
Bland Gerald F. (Glenview IL) Kantola James C. (Waukegan IL) Mondek Martin J. (Wonder Lake IL) Sullivan Donald K. (Prospect Heights IL), Stern drive unit.
Bankstahl Herbert A. (Fond du Lac WI) Forsgren Lyle M. (Oshkosh WI) Newman Neil A. (Omro WI) Beck Wayne T. (Fond du Lac WI) Griffiths John M. (Fond du Lac WI), Torque splitting drive train mechanism for a dual counterrotating propeller marine drive system.
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