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US3181495A - Coolant supply and exhaust discharge means for inboard-outboard drives - Google Patents

Coolant supply and exhaust discharge means for inboard-outboard drives Download PDF

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Publication number
US3181495A
US3181495A US249726A US24972663A US3181495A US 3181495 A US3181495 A US 3181495A US 249726 A US249726 A US 249726A US 24972663 A US24972663 A US 24972663A US 3181495 A US3181495 A US 3181495A
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United States
Prior art keywords
propulsion unit
transom
engine
drive shaft
watercraft
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Expired - Lifetime
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US249726A
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Kiekhaefer Elmer Carl
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Kiekhaefer Corp
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Kiekhaefer Corp
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Priority to US249726A priority Critical patent/US3181495A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/24—Arrangements, apparatus and methods for handling exhaust gas in outboard drives, e.g. exhaust gas outlets
    • B63H20/245—Exhaust gas outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/14—Transmission between propulsion power unit and propulsion element
    • B63H20/22—Transmission between propulsion power unit and propulsion element allowing movement of the propulsion element about at least a horizontal axis without disconnection of the drive, e.g. using universal joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/28—Arrangements, apparatus and methods for handling cooling-water in outboard drives, e.g. cooling-water intakes
    • B63H20/285—Cooling-water intakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/08—Means enabling movement of the position of the propulsion element, e.g. for trim, tilt or steering; Control of trim or tilt
    • B63H20/10—Means enabling trim or tilt, or lifting of the propulsion element when an obstruction is hit; Control of trim or tilt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/08—Means enabling movement of the position of the propulsion element, e.g. for trim, tilt or steering; Control of trim or tilt
    • B63H20/12—Means enabling steering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/14—Transmission between propulsion power unit and propulsion element
    • B63H20/20—Transmission between propulsion power unit and propulsion element with provision for reverse drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/32—Housings
    • B63H20/34—Housings comprising stabilising fins, foils, anticavitation plates, splash plates, or rudders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/13—Article holder attachable to apparel or body
    • Y10T24/1321—Pencil
    • Y10T24/1324—Clasp attached
    • Y10T24/1353—Pivoted jaw pencil holder

Definitions

  • the stern drive unit having steering and tiltaxes ahead of the vertical drive shaft of the unit is adapted to receive the exhaust products from the inboard engine 11 for discharge beneath the water surface and the engine cooling water is picked up by the drive unit and conducted to the engine.
  • exhaust pipe 35 which extends rearwardly and downwardly from the engine.
  • Exhaust pipe 35 is disposed to the sideof the horizontal drive shaft 12 and the flexible conduit 36 is connected thereto and extends downwardly and around the drive shaft and engine coupling element 27.
  • Conduit 36 passes through opening 37 in the lower portion of inner transom plate 17 and into transom opening 19 for connection to the forward projection of tubular connector 38 which is aligned with opening 37 and formed integrally with the outer transom plate 18 about an axis in the vertical plane containing the axis of drive shaft 12.
  • the dirigible and tiltable stern drive unit 1 is provided with an inlet 39 for engine exhaust products in the lower portion of bell housing 36 which is generally in alignment with and of the same size as the rearward projection of transom plate connector 38.
  • An expandable bellows conduit 40 extends through the gimbal ring member 29 and connects the fixed transom plate connector 38 and movable stern. drive inlet 39 providing passage for the exhaust products from engine 11 to the interior of the stern drive unit without interference from or to steering and tilt movements of the'drive unit.
  • the exhaust products move downwardly and are directed into the propeller hub passages 41 for discharge under water from the discharge opening 42 rearwardly of the propeller 4.
  • the water for engine cooling is picked up through a series of vertically spaced openings 43 provided on each side of the stern drive unit 1 beneath the anti-cavitation plate 44.
  • the openings 43 communicate with a vertically extending internal cored passage 45 which conducts the water to the impeller pump 46 driven by vertical drive shaft 6.
  • Pump 46 forces the coolant through the upwardly extending tubular member 47 into chamber 48 which is disposed rearwardly of and adjacent to the gear chamber 15 to provide for cooling .of the latter chamber.
  • Passage 50 terminates with a forwardly extending tubular projection 51 opening within the stern drive bell housing 30 generally between horizontal drive shaft 12 and the exhaust inlet 39 and to the right of the vertical plane through the axis of shaft 12 as viewed in FIG. 5.
  • a flexible conduit 52 extends through gimbal ring member 29 and spans the distance between the fitting 53 threaded into projection 51 movable with the dirigible and tiltable stern drive unit 1 and the tubular fitting 54 secured within the generally fixed outer transom plate 18 above horizontal drive shaft 12 and .on the opposite side of the vertical plane through the axis of shaft 12 from projection 51.
  • Conduit 52 is clamped onto fitting 53 and extends forwardly and around the bellows connector 55 extending between the stern drive bell housing 30 and the outer transom plate 18 and enclosing the horizontal drive shaft 12 at the double universal joint 16.
  • conduit 52 adjacent to transom plate 18 generally parallels the plate and is clamped to angular fitting portion 56 which opens generally normal to a radial line through the axis of the horizontal drive shaft so that conduit 52 spans the distance from the movable stern drive unit relatively smoothly and is substantially free from kinks. Since the'fittings 53 and 54 are disposed generally equidistantly and oppositely with respect to the vertical and horizontal planes through the axis of drive shaft 12, conduit 52 will not be unduly stressed during steering and tilt movements of the propulsion unit.
  • the fitting 54 carries the coolant through the outer transom plate 18 and is mounted within the outer transom plate projection 57 which extends inboard through the opening 53 in the inner transom plate 17.
  • the fitting 54 is disposedin a'frusto-conical rubber bushing 59 which I is adapted to be wedged into the tapered opening-60 through projection 57 to securely hold the fitting and prevent water from leaking through opening 60 into the interior of the Watercraft.
  • An elliptical plate 61 having an opening 62 to pass over fitting 54 is adapted for securement to the forward face of projection 57 to compress the bushing 59 into intimate contact with the fitting and the wall forming opening 60 in the projection.
  • fitting 54 Forwardly of the transom plate assembly, fitting 54 includes an angular portion 63 which extends upwardly and to the right as viewed in FIG. 4 to eliminate undue kinking in the flexible conduit 64 clamped to fitting portion 63.
  • Conduit 64 extends forwardly and around the side of engine 11 for connection to the engine pump 65 which circulates the coolant through appropriate engine passages, not shown. After the coolant has served its purpose within engine 11, the heated 'water is discharged into the engine exhaust pipe 35 through conduit 66 connecting the pipe with the engine outlet 67. The discharged coolant thus serves to cool the engine exhaust products flowing through the exhaust pipe and passes through the exhaust system for discharge from the stern drive unit with the exhaust products.
  • an inboard-outboard drive for watercraft an engine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the watercraft and dirigibly and pendently supported therefrom for steering movement on a generally vertical axis and for tilt movement on a generally horizontal transverse axis substantially intersecting said steering axis, a substantially vertical drive shaft in said propulsion unit rearward from said steering axis, drive means interconnecting said engine and said propulsion unit drive shaft, mounting means for said propulsion unit secured to the transom of the watercraft and surrounding an opening through said transom for receiving said drive means, water pick-u means in said pro pulsion unit, a Water pump in said propulsion unit driven by said drive shaft and connected to receive water from said pick-up means, means to conduct water from said pump through the propulsion unit and through the transom opening and said mounting means to said engine and including flexible conduit means adjacent said axes intersection to provide freedom for steering and tilt movements of said propulsion unit upon said axes.
  • an en- 5 gine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the Watercraft and dirigibly and pendently supported therefrom for steering movement on a generally vertical axis and for tilt movement on a generally horizontal transverse axis substantially intersecting said steering axes, a substantially vertical drive shaft in said propulsion unit rearwardly of said steering axis, drive means interconnecting said engine and said propulsion unit drive shaft, mounting means for said propulsion unit secured to the transom of the Watercraft and surrounding an opening through said transom for receiving said drive means, and engine exhaust passage means extending from said engine through said transom opening and said mounting means into and through said propulsion unit and including a flexible and expandable conduit section adjacent to said axes intersection to provide freedom for steering and tilt movements of said propulsion unit upon said axes without interruption of said passage means.
  • an inboard-outboard drive for Watercraft having a transom, an engine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft and being dirigibly and pendently supported from the transom on generally vertical and transverse horizontal axes forwardly of said drive shaft, a horizontal drive shaft extending througi the transom and drivingly connecting the vertical drive shaft and said engine and being adapted to accommodate movements of the propulsion unit on said axes, mounting means for said propulsion unit secured to said transom and surrounding an opening through the transom for said horizontal drive shaft, pickup means for en ine cooling Water in said propulsion unit beneath the anti-cavitation plate, outlet means on said propulsion unit above the anti-cavitation plate and communicating with said cooling water pickup means, and conduit means extending through said transom opening and said mounting means and connecting the propulsion unit outlet means to the engine for carrying the cooling water to the engine, said conduit means being adapted to flex in the region
  • an inboard-outboard drive for watercraft having a transom, an engine disposed inboard of the watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft and being dirigibly and pendently supported from the transom on generally vertical and transverse horizontal axes forwardly of said drive shaft, a horizontal drive shaft extending through the transom and drivingly connecting the vertical drive shaft and said engine and being adapted to accommodate movements of the propulsion unit on said axes, mounting means for said propulsion unit secured to said transom and surrounding an opening through the transom for said horizontal drive shaft, engine exhaust discharge means in said propulsion unit beneath the anti-cavitation plate, inlet means on said propulsion unit above the anti-cavitation plate and communicating with said exhcust discharge means, and conduit means extending through said transom opening and said mounting means and connecting the propulsion unit inlet means to the engine exhaust pipe and carrying the engi e exhaust products to the propulsion unit for discharge under Water, said
  • an inboard-outboard drive for watercraft having a transom, an engine disposed inboard of the watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft, mounting means for said propulsion unit secured to said transom and surrounding an opening through the transom, said propulsion unit being dirigibly and pendently supported by said mounting means on generally vertical and transverse horizontal axes forwardly of' said drive shaft, a horizontal drive shaft extending through the transom opening and drivingly connecting the vertical drive shaft and said engine and being adapted to accommodate movements of the propulsion unit on said axes, pickup means for engine cooling Water and engine exhaust discharge means in said propulsion unit beneath the anti-cavitation plate, cooling water outlet means on said propulsion unit above the anti-cavitation plate and communicating with said cooling Water pickup means, exhaust inlet means on said propulsion unit above the anti-cavitation plate and communicating with said exhaust discharge means, conduit means extending through the transom opening and mounting means and connecting the propulsion unit outlet
  • an inboard-outboard drive for Watercraft having a transom, an engine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft, support means mounted on the transom and dirigibly and pendently supporting the propulsion unit on generally vertical and transverse horizontal axes forwardly of said vertical drive shaft, a horizontal drive shaft extending through said transom and support means and drivingly connecting the vertical drive shaft and said engine and being adapted to accommodate steering and tilt movements of the propulsion unit on said axes, pickup means for engine cooling water and discharge means for engine exhaust in said propulsion unit beneath the anti-cavitation plate, cooling water outlet means on said propulsion unit above the anti-cavitation plate and communicating with said cooling Water pickup means, exhaust inlet means on said propulsion unit above the anti-cavitation plate and com municating with said exhaust discharge means, said propulsion unit support means including through transom cooling Water passage means and exhaust passage means respectively communicating with the engine, and flexible conduit respectively
  • an inboard-outboard drive for Watercraft having a transom, an engine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft, support means mounted on the transom, a gimbal ring member pivotally supporting the propulsion unit on a generally transverse horizontal axis to accommodate tilt movements of the unit in a generally vertical plane and being pivotally supported by the support means on a generally vertical axis to accommodate steering movements of the member together with the propulsion unit in a generally horizontal plane, a horizontal drive shaft extending through said transom and gimbal ring member and drivingly connecting the vertical drive shaft and said engine and having universal coupling means to accommodate steering and tilt movements of the propulsion unit on said axes, pickup means for engine cooling 6' Water and discharge means for engine exhaust provided in the propulsion unit beneath the anti-cavitation plate, cooling water outlet means on said propulsion unit above the anti-cavitation plate and communicating with said cooling water pickup means, exhaust in
  • the propulsion unit cooling water outlet means opens forwardly and is 8 disposed beneath the horizontal drive shaft and to one side of the vertical plane through the axis of said shaft and the cooling water passage means in the transom support means constitutes a fitting disposed above said shaft and on the opposite side of the vertical plane through the axis of said shaft from said outlet means, said fitting having an outboard end portion which opens generally normal to a radial line through the axis of the horizontal drive shaft so that the flexible conduit connecting the outletlmeans and fitting and extending around the horizontal drive shaft is substantially free of kinks.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Exhaust Silencers (AREA)

Description

May 4, 1965 E. c. KIEKHAEFER 3,181,495
COOLANT SUPPLY AND EXHAUST DISCHARGE MEANS FOR INBOABD-OUTBOARD DRIVES Filed Jan. '7, 1963 2 Sheets-Sheet 1 s L a INVENTOR. [Laura C. )fisnnntaa jadrus F sfdrlfe Arr-m ne L:
y 4, 1965 E. c. KIEKHAEFER 3,181,495
COOLANT SUPPLY AND EXHAUST DISCHARGE MEANS FDR INBOARD-QUTBOARD DRIVES Filed Jan. '7, 1963 2 Sheets-Sheet 2 1| Z 6 ik m 65 i 21 16 I: 30 7- 3 2/ I a 2a INVENTOR. [0051: C Mummers! 3 BY shaft 12 bends correspondingly at the joint to accommodate steering movements of the unit. Steering control of the unit is provided by remote control means which pivots the steering arm 34 secured on swivel shaft.
element 32.
According to this inventiomthe stern drive unit having steering and tiltaxes ahead of the vertical drive shaft of the unit is adapted to receive the exhaust products from the inboard engine 11 for discharge beneath the water surface and the engine cooling water is picked up by the drive unit and conducted to the engine.
The exhaust products resulting from engine operation are discharged from engine 11 through the exhaust pipe 35 which extends rearwardly and downwardly from the engine. Exhaust pipe 35 is disposed to the sideof the horizontal drive shaft 12 and the flexible conduit 36 is connected thereto and extends downwardly and around the drive shaft and engine coupling element 27. Conduit 36 passes through opening 37 in the lower portion of inner transom plate 17 and into transom opening 19 for connection to the forward projection of tubular connector 38 which is aligned with opening 37 and formed integrally with the outer transom plate 18 about an axis in the vertical plane containing the axis of drive shaft 12.
The dirigible and tiltable stern drive unit 1 is provided with an inlet 39 for engine exhaust products in the lower portion of bell housing 36 which is generally in alignment with and of the same size as the rearward projection of transom plate connector 38. An expandable bellows conduit 40 extends through the gimbal ring member 29 and connects the fixed transom plate connector 38 and movable stern. drive inlet 39 providing passage for the exhaust products from engine 11 to the interior of the stern drive unit without interference from or to steering and tilt movements of the'drive unit.
In the interior of the stern drive unit 1, the exhaust products move downwardly and are directed into the propeller hub passages 41 for discharge under water from the discharge opening 42 rearwardly of the propeller 4.
The water for engine cooling is picked up through a series of vertically spaced openings 43 provided on each side of the stern drive unit 1 beneath the anti-cavitation plate 44. The openings 43 communicate with a vertically extending internal cored passage 45 which conducts the water to the impeller pump 46 driven by vertical drive shaft 6. Pump 46 forces the coolant through the upwardly extending tubular member 47 into chamber 48 which is disposed rearwardly of and adjacent to the gear chamber 15 to provide for cooling .of the latter chamber.
From cooling chamber 48, the cooling water flows through the tranverse passage 49 into the longitudinal passage 50 extending along the side of the gear chamber 15. Passage 50 terminates with a forwardly extending tubular projection 51 opening within the stern drive bell housing 30 generally between horizontal drive shaft 12 and the exhaust inlet 39 and to the right of the vertical plane through the axis of shaft 12 as viewed in FIG. 5.
A flexible conduit 52 extends through gimbal ring member 29 and spans the distance between the fitting 53 threaded into projection 51 movable with the dirigible and tiltable stern drive unit 1 and the tubular fitting 54 secured within the generally fixed outer transom plate 18 above horizontal drive shaft 12 and .on the opposite side of the vertical plane through the axis of shaft 12 from projection 51. Conduit 52 is clamped onto fitting 53 and extends forwardly and around the bellows connector 55 extending between the stern drive bell housing 30 and the outer transom plate 18 and enclosing the horizontal drive shaft 12 at the double universal joint 16. The end portion-of conduit 52 adjacent to transom plate 18 generally parallels the plate and is clamped to angular fitting portion 56 which opens generally normal to a radial line through the axis of the horizontal drive shaft so that conduit 52 spans the distance from the movable stern drive unit relatively smoothly and is substantially free from kinks. Since the'fittings 53 and 54 are disposed generally equidistantly and oppositely with respect to the vertical and horizontal planes through the axis of drive shaft 12, conduit 52 will not be unduly stressed during steering and tilt movements of the propulsion unit.
The fitting 54 carries the coolant through the outer transom plate 18 and is mounted within the outer transom plate projection 57 which extends inboard through the opening 53 in the inner transom plate 17. The fitting 54 is disposedin a'frusto-conical rubber bushing 59 which I is adapted to be wedged into the tapered opening-60 through projection 57 to securely hold the fitting and prevent water from leaking through opening 60 into the interior of the Watercraft. An elliptical plate 61 having an opening 62 to pass over fitting 54 is adapted for securement to the forward face of projection 57 to compress the bushing 59 into intimate contact with the fitting and the wall forming opening 60 in the projection.
Forwardly of the transom plate assembly, fitting 54 includes an angular portion 63 which extends upwardly and to the right as viewed in FIG. 4 to eliminate undue kinking in the flexible conduit 64 clamped to fitting portion 63. Conduit 64 extends forwardly and around the side of engine 11 for connection to the engine pump 65 which circulates the coolant through appropriate engine passages, not shown. After the coolant has served its purpose within engine 11, the heated 'water is discharged into the engine exhaust pipe 35 through conduit 66 connecting the pipe with the engine outlet 67. The discharged coolant thus serves to cool the engine exhaust products flowing through the exhaust pipe and passes through the exhaust system for discharge from the stern drive unit with the exhaust products.
With the structure of'this invention wherein the exhaust products pass through the stern drive unit for underwater discharge a more quiet engine operation results without need for a separate mufiier to take up space in the watercraft. Provision for coolant pickup in the stern drive unit eliminates the need for a separate pickup on the watercraft where such would not only be vulnerable to damage but also would impose a substantial drag upon the progress of the watercraft. With a coolant water pickup in the sterndrive unit, the coolant also becomes conveniently available to cool the upper gear case in the unit.
Various modes of carrying out the invention are contemplated as being within the scope of the following claims particularly'pointing out and distinctly claiming the subject matter which is regarded as the invention.
I claim:
1. In an inboard-outboard drive for watercraft, an engine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the watercraft and dirigibly and pendently supported therefrom for steering movement on a generally vertical axis and for tilt movement on a generally horizontal transverse axis substantially intersecting said steering axis, a substantially vertical drive shaft in said propulsion unit rearward from said steering axis, drive means interconnecting said engine and said propulsion unit drive shaft, mounting means for said propulsion unit secured to the transom of the watercraft and surrounding an opening through said transom for receiving said drive means, water pick-u means in said pro pulsion unit, a Water pump in said propulsion unit driven by said drive shaft and connected to receive water from said pick-up means, means to conduct water from said pump through the propulsion unit and through the transom opening and said mounting means to said engine and including flexible conduit means adjacent said axes intersection to provide freedom for steering and tilt movements of said propulsion unit upon said axes.
2. In an inboard-outboard drive for watercraft, an en- 5 gine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the Watercraft and dirigibly and pendently supported therefrom for steering movement on a generally vertical axis and for tilt movement on a generally horizontal transverse axis substantially intersecting said steering axes, a substantially vertical drive shaft in said propulsion unit rearwardly of said steering axis, drive means interconnecting said engine and said propulsion unit drive shaft, mounting means for said propulsion unit secured to the transom of the Watercraft and surrounding an opening through said transom for receiving said drive means, and engine exhaust passage means extending from said engine through said transom opening and said mounting means into and through said propulsion unit and including a flexible and expandable conduit section adjacent to said axes intersection to provide freedom for steering and tilt movements of said propulsion unit upon said axes without interruption of said passage means.
3. In an inboard-outboard drive for Watercraft having a transom, an engine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft and being dirigibly and pendently supported from the transom on generally vertical and transverse horizontal axes forwardly of said drive shaft, a horizontal drive shaft extending througi the transom and drivingly connecting the vertical drive shaft and said engine and being adapted to accommodate movements of the propulsion unit on said axes, mounting means for said propulsion unit secured to said transom and surrounding an opening through the transom for said horizontal drive shaft, pickup means for en ine cooling Water in said propulsion unit beneath the anti-cavitation plate, outlet means on said propulsion unit above the anti-cavitation plate and communicating with said cooling water pickup means, and conduit means extending through said transom opening and said mounting means and connecting the propulsion unit outlet means to the engine for carrying the cooling water to the engine, said conduit means being adapted to flex in the region of said generally vertical and transverse horizontal axes as not to interfere with the steering and tilt movements of the propulsion unit.
4. In an inboard-outboard drive for watercraft having a transom, an engine disposed inboard of the watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft and being dirigibly and pendently supported from the transom on generally vertical and transverse horizontal axes forwardly of said drive shaft, a horizontal drive shaft extending through the transom and drivingly connecting the vertical drive shaft and said engine and being adapted to accommodate movements of the propulsion unit on said axes, mounting means for said propulsion unit secured to said transom and surrounding an opening through the transom for said horizontal drive shaft, engine exhaust discharge means in said propulsion unit beneath the anti-cavitation plate, inlet means on said propulsion unit above the anti-cavitation plate and communicating with said exhcust discharge means, and conduit means extending through said transom opening and said mounting means and connecting the propulsion unit inlet means to the engine exhaust pipe and carrying the engi e exhaust products to the propulsion unit for discharge under Water, said conduit means being adapted to hex and expand in the region of said generally vertical and transverse horizontal axes so as not to interfere with the steering and tilt movements of the propulsion unit.
5. In an inboard-outboard drive for watercraft having a transom, an engine disposed inboard of the watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft, mounting means for said propulsion unit secured to said transom and surrounding an opening through the transom, said propulsion unit being dirigibly and pendently supported by said mounting means on generally vertical and transverse horizontal axes forwardly of' said drive shaft, a horizontal drive shaft extending through the transom opening and drivingly connecting the vertical drive shaft and said engine and being adapted to accommodate movements of the propulsion unit on said axes, pickup means for engine cooling Water and engine exhaust discharge means in said propulsion unit beneath the anti-cavitation plate, cooling water outlet means on said propulsion unit above the anti-cavitation plate and communicating with said cooling Water pickup means, exhaust inlet means on said propulsion unit above the anti-cavitation plate and communicating with said exhaust discharge means, conduit means extending through the transom opening and mounting means and connecting the propulsion unit outlet means to the engine for carrying cooling Water to the engine, and conduit means extending through the transom opening and mounting means and connecting the propulsion unit inlet means to the engine exhaust pipe for carrying the engine exhaust products to the propulsion unit for discharge under Water, said respective conduit means being adapted to flex in the region of said generally vertical and transverse horizontal axes so as not to interfere with the steering and tilt movements of the propulsion unit.
6. In an inboard-outboard drive for Watercraft having a transom, an engine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft, support means mounted on the transom and dirigibly and pendently supporting the propulsion unit on generally vertical and transverse horizontal axes forwardly of said vertical drive shaft, a horizontal drive shaft extending through said transom and support means and drivingly connecting the vertical drive shaft and said engine and being adapted to accommodate steering and tilt movements of the propulsion unit on said axes, pickup means for engine cooling water and discharge means for engine exhaust in said propulsion unit beneath the anti-cavitation plate, cooling water outlet means on said propulsion unit above the anti-cavitation plate and communicating with said cooling Water pickup means, exhaust inlet means on said propulsion unit above the anti-cavitation plate and com municating with said exhaust discharge means, said propulsion unit support means including through transom cooling Water passage means and exhaust passage means respectively communicating with the engine, and flexible conduit respectively connecting the propulsion unit cooling water outlet means to the cooling Water passage means and the propulsion unit exhaust inlet means to the exhaust passage means so as not to interfere with the steering and tilt movements of the propulsion unit.
7. The invention of claim 6 wherein the driving connection between the horizontal and vertical drive shafts consists of meshing gears disposed Within a chamber in the propulsion unit and the cooling water flowing through the propulsion unit between the pickup means and out let means is conducted through passage means in heat interchange relation with the gear chamber.
8. In an inboard-outboard drive for Watercraft having a transom, an engine disposed inboard of the Watercraft, a propulsion unit disposed outboard of the Watercraft and having an anti-cavitation plate and a vertical drive shaft, support means mounted on the transom, a gimbal ring member pivotally supporting the propulsion unit on a generally transverse horizontal axis to accommodate tilt movements of the unit in a generally vertical plane and being pivotally supported by the support means on a generally vertical axis to accommodate steering movements of the member together with the propulsion unit in a generally horizontal plane, a horizontal drive shaft extending through said transom and gimbal ring member and drivingly connecting the vertical drive shaft and said engine and having universal coupling means to accommodate steering and tilt movements of the propulsion unit on said axes, pickup means for engine cooling 6' Water and discharge means for engine exhaust provided in the propulsion unit beneath the anti-cavitation plate, cooling water outlet means on said propulsion unit above the anti-cavitation plate and communicating with said cooling water pickup means, exhaust inlet means on said propulsion unit above the anti-cavitation plate and communicating with said exhaust discharge means, said transom support means including through transom cooling water passage means and exhaust passage means respectively communicating with the engine, and flexible conduit extending through the gimbal ring member and connecting the propulsion unit cooling water outlet means to the cooling water passage means and the propulsion unit exhaust inlet means to the exhaust passage means to provide for uninterrupted flow of coolant and exhaust products respectively and without interference to the steering and tilt movements of the propulsion unit.
9. The invention of claim 8 wherein the driving conand the flexible conduit connecting said inlet means and passage means is a bellows connector.
11. The invention of claim 8 wherein the propulsion unit cooling water outlet means 'opens forwardly and is 8 disposed beneath the horizontal drive shaft and to one side of the vertical plane through the axis of said shaft and the cooling water passage means in the transom support means constitutes a fitting disposed above said shaft and on the opposite side of the vertical plane through the axis of said shaft from said outlet means, said fitting having an outboard end portion which opens generally normal to a radial line through the axis of the horizontal drive shaft so that the flexible conduit connecting the outletlmeans and fitting and extending around the horizontal drive shaft is substantially free of kinks.
12. The invention of claim 8 wherein the cooling water outlet means on the movable propulsion unit and the cooling water passage means on the generally fixed transom support means'are disposed generally equidistantly and oppositely with respect to vertical and horizontal planes through the axis of the horizontal drive shaft so that the flexible conduit extending therebetween is not unduly stressed during tilt and steering movements of the unit.
References Cited by the Examiner UNITED STATES PATENTS 1,028,333 6/12 Desenberg 11542 1,824,213 9/31 Johnson 115-41 1,900,180 3/33 Harvey 115-41 2,091,247 8/37 Williams 11541 2,473,618 6/49 Stillwagon 11541 2,681,029 6/54 Canazzi 115-35 2,718,792 9/55 Kiekhaefer 11534 2,903,991 9/59 Carlson et a1. 115.5 3,088,296 5/63 Barker et a1. 115-41 FERGUS s. MIDDLETON, Primary Examiner.

Claims (1)

1. IN AN INBOARD-OUTBOARD DRIVE FOR WATERCRAFT, AN ENGINE DISPOSED INBOARD OF THE WATERCRAFT, A PROPULSION UNIT DISPOSED OUTBOARD OF THE WATERCRAFT AND DIRIGIBLY AND PENDENTLY SUPPORTED THEREFROM FOR STEERING MOVEMENT ON A GENERALLY VERTICALLY AXIS AND FOR TILT MOVEMENT ON A GENERALLY HORIZONTAL TRANSVERSE AXIS SUBSTANTIALLY INTERSECTING SAID STEERING AXIS, A SUBSTANTIALLY VERTICAL DRIVE SHAFT IN SAID PROPULSION UNIT REARWARD FROM SAID STEERING AXIS, DRIVE MEANS INTERCONNECTING SAID ENGINE AND SAID PROPULSION UNIT DRIVE SHAFT, MOUNTING MEANS FOR SAID PROPULSION UNIT SECURED TO THE TRANSOM OF THE WATERCRAFT AND SURROUNDING AN OPENING THROUGH SAID TRANSOM FOR RECEIVING SAID DRIVE MEANS, WATER PICK-UP MEANS IN SAID PROPULSION UNIT, A WATER PUMP IN SAID PROPULSION UNIT DRIVEN BY SAID DRIVE SHAFT AND CONNECTED TO RECEIVE WATER FROM SAID PICK-UP MEANS, MEANS TO CONDUCT WATER FROM SAID PUMP THROUGH THE PROPULSION UNIT AND THROUGH THE TRANSOM OPENING AND SAID MOUNTING MEANS TO SAID ENGINE AND INCLUDING FLEXIBLE CONDUIT MEANS ADJACENT SAID AXES INTERSECTION TO PROVIDE FREEDOM FOR STEERING AND TILT MOVEMENTS OF SAID PROPULSION UNIT UPON SAID AXES.
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487804A (en) * 1967-10-10 1970-01-06 Brunswick Corp Underwater propeller with airvented slip stream
US3859951A (en) * 1972-12-21 1975-01-14 Brunswick Corp Marine drive transom seal apparatus
US3888203A (en) * 1974-03-29 1975-06-10 Kiekhaefer Aeromarine Motors Stern drive for boats
US3893407A (en) * 1974-09-23 1975-07-08 Chrysler Corp Inboard-outboard marine drive
JPS519497U (en) * 1974-07-10 1976-01-23
US3968767A (en) * 1974-06-24 1976-07-13 Outboard Marine Corporation Marine propulsion device adapted for a sailboat
JPS53165597U (en) * 1977-05-30 1978-12-25
DE3443209A1 (en) * 1983-12-14 1985-06-27 Outboard Marine Corp., Waukegan, Ill. SHIP DRIVE DEVICE
US4699598A (en) * 1985-04-10 1987-10-13 Outboard Marine Corporation Marine propulsion device water supply system
US4764135A (en) * 1987-06-17 1988-08-16 Brunswick Corporation Marine stern drive oil cooling and circulating as well as pumping system
US4764136A (en) * 1987-02-04 1988-08-16 Donald Johansson Marine drive means
AU581739B2 (en) * 1985-04-10 1989-03-02 Outboard Marine Corporation Marine propulsion device water supply system
US4861293A (en) * 1988-04-20 1989-08-29 Outboard Marine Corporation Marine propulsion device with screened water inlet
US4940434A (en) * 1989-01-17 1990-07-10 Brunswick Corporation Marine propulsion unit universal drive assembly with through-bellows exhaust
US4955837A (en) * 1987-12-28 1990-09-11 Sanshin Kogyo Kabushiki Kaisha Cooling water feed structure for inboard/outboard engine
US5078629A (en) * 1984-07-16 1992-01-07 Outboard Marine Corporation Pivotal air induction for marine propulsion unit
US5129847A (en) * 1984-07-16 1992-07-14 Outboard Marine Corporation Pivotal air induction for marine propulsion unit
US5934955A (en) * 1998-01-27 1999-08-10 Heston; Scott J. Vertical trim system for marine outdrives
US6814635B1 (en) * 2002-01-25 2004-11-09 Yamaha Marine Kabushiki Kaisha Vertically extendable arrangement for marine propulsion device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1028333A (en) * 1911-09-05 1912-06-04 Edward B Desenberg Propeller.
US1824213A (en) * 1927-10-12 1931-09-22 Johnson Brothers Engineering C Marine motor
US1900180A (en) * 1931-12-24 1933-03-07 Harvey James Willard Motor boat installation
US2091247A (en) * 1934-06-26 1937-08-24 Harold D Gregory Outboard motor
US2473618A (en) * 1944-01-05 1949-06-21 Fraser Kenneth G Universal joint
US2681029A (en) * 1950-05-05 1954-06-15 Canazzi Henry Donald Propulsion drive unit for boats
US2718792A (en) * 1952-08-04 1955-09-27 Elmer C Kiekhaefer Reversible lower gear unit for outboard motors
US2903991A (en) * 1954-01-11 1959-09-15 Mcculloch Corp Combination bailing and cooling water pump
US3088296A (en) * 1960-11-23 1963-05-07 Jerry C Barker Marine drive

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1028333A (en) * 1911-09-05 1912-06-04 Edward B Desenberg Propeller.
US1824213A (en) * 1927-10-12 1931-09-22 Johnson Brothers Engineering C Marine motor
US1900180A (en) * 1931-12-24 1933-03-07 Harvey James Willard Motor boat installation
US2091247A (en) * 1934-06-26 1937-08-24 Harold D Gregory Outboard motor
US2473618A (en) * 1944-01-05 1949-06-21 Fraser Kenneth G Universal joint
US2681029A (en) * 1950-05-05 1954-06-15 Canazzi Henry Donald Propulsion drive unit for boats
US2718792A (en) * 1952-08-04 1955-09-27 Elmer C Kiekhaefer Reversible lower gear unit for outboard motors
US2903991A (en) * 1954-01-11 1959-09-15 Mcculloch Corp Combination bailing and cooling water pump
US3088296A (en) * 1960-11-23 1963-05-07 Jerry C Barker Marine drive

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487804A (en) * 1967-10-10 1970-01-06 Brunswick Corp Underwater propeller with airvented slip stream
US3859951A (en) * 1972-12-21 1975-01-14 Brunswick Corp Marine drive transom seal apparatus
US3888203A (en) * 1974-03-29 1975-06-10 Kiekhaefer Aeromarine Motors Stern drive for boats
US3968767A (en) * 1974-06-24 1976-07-13 Outboard Marine Corporation Marine propulsion device adapted for a sailboat
JPS519497U (en) * 1974-07-10 1976-01-23
US3893407A (en) * 1974-09-23 1975-07-08 Chrysler Corp Inboard-outboard marine drive
JPS53165597U (en) * 1977-05-30 1978-12-25
DE3443209A1 (en) * 1983-12-14 1985-06-27 Outboard Marine Corp., Waukegan, Ill. SHIP DRIVE DEVICE
GB2151197A (en) * 1983-12-14 1985-07-17 Outboard Marine Corp Water pump location for marine propulsion device
US5078629A (en) * 1984-07-16 1992-01-07 Outboard Marine Corporation Pivotal air induction for marine propulsion unit
US5129847A (en) * 1984-07-16 1992-07-14 Outboard Marine Corporation Pivotal air induction for marine propulsion unit
US4699598A (en) * 1985-04-10 1987-10-13 Outboard Marine Corporation Marine propulsion device water supply system
AU581739B2 (en) * 1985-04-10 1989-03-02 Outboard Marine Corporation Marine propulsion device water supply system
US4764136A (en) * 1987-02-04 1988-08-16 Donald Johansson Marine drive means
US4764135A (en) * 1987-06-17 1988-08-16 Brunswick Corporation Marine stern drive oil cooling and circulating as well as pumping system
US4955837A (en) * 1987-12-28 1990-09-11 Sanshin Kogyo Kabushiki Kaisha Cooling water feed structure for inboard/outboard engine
US4861293A (en) * 1988-04-20 1989-08-29 Outboard Marine Corporation Marine propulsion device with screened water inlet
US4940434A (en) * 1989-01-17 1990-07-10 Brunswick Corporation Marine propulsion unit universal drive assembly with through-bellows exhaust
US5934955A (en) * 1998-01-27 1999-08-10 Heston; Scott J. Vertical trim system for marine outdrives
US6814635B1 (en) * 2002-01-25 2004-11-09 Yamaha Marine Kabushiki Kaisha Vertically extendable arrangement for marine propulsion device

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