CA1253405A - Marine propulsion device water supply system - Google Patents
Marine propulsion device water supply systemInfo
- Publication number
- CA1253405A CA1253405A CA000496703A CA496703A CA1253405A CA 1253405 A CA1253405 A CA 1253405A CA 000496703 A CA000496703 A CA 000496703A CA 496703 A CA496703 A CA 496703A CA 1253405 A CA1253405 A CA 1253405A
- Authority
- CA
- Canada
- Prior art keywords
- conduit
- pivot housing
- engine
- propulsion unit
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 230000033001 locomotion Effects 0.000 claims abstract description 30
- 238000005086 pumping Methods 0.000 claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/04—Arrangements of liquid pipes or hoses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
- F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/14—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe by screwing an intermediate part against the inside or outside of the wall
-
- 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
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
- B63H2023/0208—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing by means of endless flexible members
- B63H2023/025—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing by means of endless flexible members by means of chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
- B63H2025/425—Propulsive elements, other than jets, substantially used for steering or dynamic anchoring only, with means for retracting, or otherwise moving to a rest position outside the water flow around the hull
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/02—Marine engines
- F01P2050/10—Z-type engine
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A marine propulsion device comprising an internal combustion engine, a propulsion unit adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, the propulsion unit including a propeller operably connected to the engine, a pump for pumping water from the exterior of the propulsion unit to the engine, and a conduit extending from the pump to the engine and having a low point below both the pump and the connection of the conduit to engine, and a drain for draining water from adjacent the low point of the conduit.
A marine propulsion device comprising an internal combustion engine, a propulsion unit adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, the propulsion unit including a propeller operably connected to the engine, a pump for pumping water from the exterior of the propulsion unit to the engine, and a conduit extending from the pump to the engine and having a low point below both the pump and the connection of the conduit to engine, and a drain for draining water from adjacent the low point of the conduit.
Description
~;3~
MARINE PROPULSION DEVICE WATER SUPPLY SYSTEM
-BACKGROUND OF THE INVENTION
The invention relates to water supply systems for marine propulsion devices.
Prior marine propulsion device water supply systems commonly include a pump for pumping coolant water to the engine, and a conduit extending between the pump and the engine for conducting the water to the engine. These prior water supply systems are often difficult to drain when the marine propulsion device is removed from the water for storage, and this can result in water freezing in the water supply system and damaging the marine propulsion device. Also, these prior water supply systems often complicate assembly and disassembly of marine propulsion devices because these prior water supply systems must also be assembled and disassembled.
Attention is directed to Canadian Patent 1,220,672 granted April 24, 1987, and titled "Water Pump Location for Marine Propulsion Device."
SUMMARY OF THE INVENTION
The invention provides a marine propulsion device comprising an internal combustion engine, a propulsion unit adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, which propulsion unit includes a propeller operably connected ~o the engine, means for pumping water from the exterior of the propulsion unit to the .~$
1:~53qL05 engine and including a pump, and conduit means extendinq from the pump to the engine, and means for draining water from the conduit means.
In one embodiment, the conduit means ha~ a low point below both the pump and the connection of the conduit means to the engine, and the draining means affords drainage of water from adjacent the low point of the conduit means.
In one embodiment, the device further comprise~ a pivot hou~ing adapted to be pivotally mounted on the transom for pivotal movement about the steering and tilting axe~, the propul~ion unit i8 removably secured to the pivot housing for pivotal movement therewith, the pump i6 located in the propulsion unit, and the conduit means extends from the pump through the pivot housing to the engine.
In one embodimen~, the draining means includes an opening in the conduit means, and a drain plug removably secured in the opening.
In one embodi~ent, the marine propulsion device ha~ an exterior, and the drain plug is accessible from the exterior of the marine propulsion device.
The invention also pr3~ides a marine propulsion device comprising an internal combustion engine, means for pumping water to the engine and including a pump, and conduit mean~ extending from the pump to the engine and having a low point below both the pump and the connection of the conduit means to the engine, and means for draining water from adjacent the low point of the conduit means.
The invention also provides a marine propulsion device co~prising an internal combustion engine, a pivot housing adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom absut a generally vertical steering axis, and about a generally horizontal tilt axis, the pivot hou~ing including a rear end, an opening communicable with the atmo6phere, a conduit member having opposite front and rear ends and a drain opening intermediate the end~ and communicating with the openi~g in the pivot housing 80 as to be communicable with the a~mosphere, the rear end of the conduit member extendiny rearwardly of the rear end of the pivot housing, and a drain plug removably ~ecurable in the opening in the pivot hou~ing ~o as to prevent communication between the drain opening and the atmosphere, a fir~t conduit communicating b~tween the front end of the conduit member and the engine for conducting water from the conduit member to the engine, and a propul6ion unit removably connected to the pivot housing for pivotal movement therewith, the propulsion unit including a front end connected to the rear end of the pivot housing, a propeller operably connected to the engine, a pump for pumping water to the engine, an opening in the front end of the propulsion unit, and a second conduit communicating between the opening and the pump, the spening bein~
located such that the rear and of the conduit ~ember extends into the opening and communicates with the second conduit when the propulsion unit i6 connected to the pivot housing, whereby the second conduit is automatically connected to the rear end of the conduit member when the prop~lsion unit i8 connected to the pivot housing, and is auto~atically disconnected from the conduit member when the propul6ion unit is di~connec~ed from the pivot housing, 3.~
673~3-710 In one embodiment, the first and second conduits and the conduit member have a lowest point below both the pump and the engine, and the drain opening in the conduit member is located at the lowest point.
The invention also provides a marine propulsion device comprising a pivot housing having a rear end and being adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, an internal combustion engine, a first conduit communicating between the engine and the rear end of the pivot housing, and a propulsion unit having a forward end removably connected to the rear end of the pivot housing, the propulsion unit including a propeller operably connected to the engine, a pump for pumping water to the engine, and a second conduit communicating between the pump and the forward end of the propulsion unit, the second conduit being automatically connected to the first conduit when the propulsion unit is connected to the pivot housing, and being automatically disconnected from the first conduit when the propulsion unit is disconnected from the pivot housing.
The invention also provides a marine propulsion device comprising an internal combustion engine, a propulsion assembly adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis and about a generally horizontal tilt axis, which propulsion assembly includes a housing s having an exterior side face, a propeller supported by the housing and operably connected to the engine, means in the housing for pumping water from the exterior of the propulsion unit to the engine and including a pu~p, conduit means extending in the housing from the pump to the engine and including a portion intermediate the pump and the engine, and means in the propulsion assembly including a branch duct communicating between the intermediate portion of the conduit means and the housing exterior side face, and a selectively movable member removably received in the branch duct and accessible from the exterior of the propulsion assembly for selectively draining water through the branch duct from said conduit means.
The invention also provides a marine propulsion device comprising an internal combustion engine, a propulsion assembly adapted to be supported for tilting and steering movement relative to a boat transom and including opposite exterior side faces, means for pumping water to the engine and including a pump located in the propulsion assembly, and conduit means extending from the pump to the engine and including a portion which is intermediate the pump and the engine and which has a low point spaced from and below both the pump and the connection of the conduit means to the engine, and means including a branch duct communicating between the low point and one of the side faces and including a selectively movable member removably located in the branch duct and accessible from the exterior for draining water ~rom adjacent the low point of the conduit means.
The invention also provides a marine propulsion device comprising an internal combustion engine, a pivot housing adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis and about a generally horizontal tilt axis, which pivot housing includes a rear end, and an opening communicating with the atmosphere, a conduit member extending in the pivot housing and having opposite front and rear ends, which rear end of the conduit member extends rearwardly of the rear end of the pivot housing, which conduit member also includes a drain opening communicating with the opening in the pivot housing so as to be communicable with the atmosphere, a drain plug removably securable in the opening in the pivot housing so as to prevent communication between the drain opening and the atmosphere, a first conduit communicating between the front end of the conduit member and the engine for conducting water from the conduit member to the engine, and a propulsion unit removably connected to the pivot housing for pivotal movement therewith, the propulsion unit including a front end connected to the rear end of the pivot housing, a propeller operably connected to the engine, a pump for pumping water to the engine, an opening in the front end of the propulsion unit, and a second conduit communicating between the opening in the front end of the propulsion unit and the pump, which opening in the front end of the propulsion unit is located such that the rear end of the conduit member extends into the opening in the front end of the propulsion unit 3~,~5 and communicates with the second conduit when the propulsion unit is connected to the pivot housing, whereby communication of the second conduit member is effected when the propulsion unit is connected to the pivot housing.
The invention also provides a marine propulsion device comprising a pivot housing having a rear end and being adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis and about a generally horizontal tilt a~is, an internal combustion engine, a first conduit communicating between the engine and the rear end of the pivot housing, and a propulsion unit having a forward end removably connected to the rear end of the pivot housing, which propulsion unit includes a propeller operably connected to the engine, a pump for pumping water to the engine, and a second conduit communicating between the pump and the forward end of the propulsion unit so as to be positioned to effect communication with the first conduit when the propulsion unit is connected to the pivot housing and so as to be removed from communication with the first conduit when the propulsion unit is disconnected and removed from the pivot housing.
The invention also provides a marine propulsion device comprising a pivot housing adapted to be pivotally mounted on the transom of a boat and including a rear end, a conduit extending in the pivot housing and having a rear end, a drain opening in the pivot housing and communicating with the conduit and with the atmosphere, a drain plug removably securable in the drain opening so as to prevent communication between the conduit and the atmosphere, and a propulsion unit removably connected to the pivot housing and including a front end connected to the rear end of the pivot housing, and a recess located in the front end of the propulsion unit such that the rear end of the conduit communicates with the recess when the propulsion unit is connected to the pivot housing.
The invention also provides a marine propulsion device comprising a pivot housing adapted to be pivotally mounted on the transom of a boat and including a rear end, a propulsion unit removably connected to the pivot housing and including a front end connected to the rear end of the pivot housing, conduit means in the pivot housing and in the propulsion unit and including a duct extending in the pivot housing and having a rear end, and a recess located in the front end of the propulsion unit and positioned such that the rear end of the duct communicates with the recess when the propulsion unit is connected to the pivot housing, and drainage means located in one of the pivot housing and the propulsion unit and communicating between the conduit means and the atmosphere and including a removable drain plug accessible from the atmosphere.
The invention also provides a marine propulsion device comprising a propulsion assembly having opposite exterior side faces and including a pivot housing adapted to be pivotally mounted on the transom of a boat and including a rear end, a propulsion unit removably connected to the pivot 67363~710 housing and including a pump, and a front end connected to the rear end of the pivot housing, conduit means in the pivot housing and in the propulsion unit and including a duct extending in the pivot housing and having a rear end, and a recess in the propulsion unit, communicating with the pump, and having an end located in the front end of the propulsion unit and positioned such that the recess communicates with the rear end of the duct when the propulsion unit is connected to the pivot housing, which conduit also includes a portion intermediate the engine and the pump and including a part of the duct and of the recess, and drainage means located in one of the pivot housing and the propulsion unit and including a branch duct communicating between the intermediate portion of the conduit means and one of the side faces and including a removable drain plug removably located in the duct and accessible from the exterior of the one of the side faces of the propulsion assembly.
A principal feature of the invention is the provision of a marine propulsion device comprising means for pumping water from the exterior of the propulsion unit to the engine and including a pump, and conduit means extending from the pump to the engine, the conduit means having a lowest point below both the pump and the engine, and means for draining water from the lowest point of the conduit means.
; 3 ~d ~D 5 Another principal fea~ure of the invention i~ the provision o:E a marine propulsion device compri~ing a pivot housing including a rear end, an opening communicable wi~h the atmosphere, a condui~ member having opposite front and rear ends and a drain opening intermediate the ends and communicating with the opening in the pivot housing so as to be communicable with the atmosphere, and a drain plug removably ~ecurable in the opening in the pivot hou~ing ~o a~ to prevent communication between the drain opening and the atmosphere, a first conduit communicating between the front end o~ the conduit member and the engine, and a propulsion unit including a front end connected to the rear end of the piYot housing, a pump for pumping water to the engine, an opening in the front end of the propulsion unit, and a second conduit communicating wi~h the pump for conducting water from the pump to the conduit member, the ~econd conduit being automatically connected to the rear end of the conduit member when the propul6ion unit is connected to the pivot housing, and being automatically disconnected from the conduit member when the propul~ion unit i6 disconnected ~rom the pivot housing.
Other features and advantages of the invention will become apparent to those skilled in tbe art upon review of the following detailed description, claims and drawings, DESCRIPTION OF THE DRAWINGS
Figure 1 is a side elevational view of a marine propulsion device embodying the invention Figure 2 is an enlarged, partial cross sectional view taken from above the conduit member.
~Z.~ 05 ~, Figure 3 is an enlarged, partial view of the pivot hou~ing and propulsion unit showing the conduit member.
Before one embodiment of the invention i~ explained in detail, it ii to be understood that the invention is not limited in its application to the details of construction and the arrangemen~s of components zet forth in the following description or illustrated in the drawings, The invention is capable of other embodiments and of being practiced or beinq carried out in various ways. Also, it i8 to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
DESCRIPTION OF _HE PREFERRED EMBODIMENT
Illustrated in the drawings is a marine propulsion device 10 mounted on a boat 12 having a transom 14, The marine propulsion device 10 i of the stern drive or inboardJoutboard type.
As best shown in Fig. 1, the marine propulsion device 10 comprises a water cooled engine 16 securely mounted on the boat frame by suitable means such as rubber mounts tnot shown). The marine propulsion device 10 also compri~es a gimbal housing 18 mounted on the outer surface of the boat transom 14 and fixedly attached to the boat transom 14. The gimbal housing 18 can be attached to the boat transom 14 by any suitable means. such as bolts extending through the transom 14.
The marine propulsion device 10 also compri~es a gimbal ring 20 connected to the gimbal housing 18 for pivotal movement relative to the gimbal housing 18 about a generally vertical steering axis ~ 67363-710 (not shown), and a pivot housing 30 connected to the gimbal ring 20 for pivotal movement relative to the gimbal ring 20 about a generally horizontal tilt axis (not shown). Such a construction is well known in the art and need not be described in greater detail.
The marine propulsion device 10 also comprises a propulsion housing or unit 34 which, together with the pivot housing 30, constitutes a propulsion assembly and which is removably connected to the pivot housing 30 for common pivotal movement of the propulsion unit 34 with the pivot housing 30.
In the illustrated construction, the propulsion unit 34 is removably connected to the pivot housing 30 by a plurality of bolts 36. Both the pivot housing 30 and the propulsion housing or unit 34 have, as shown in the drawings, exterior side faces. The propulsion housing or unit 34 includes a propeller 38 mounted on a propeller shaft 40, and a generally horizontal drive shaft 42 having one end removably connected to the engine 16 and an opposite end having thereon a bevel gear 44. A universal joint 46 attached to the horizontal drive shaft 42 allows pivotal movement of the drive shaft 42 with the propulsion unit 34. The bevel gear 44 drives a bevel gear 48 on the upper end of a vertical drive shaft 50. The lower end of the vertical drive shaft 50 has thereon a driving gear 52. A reversible transmission selectively clutches a pair of driven gears 54 to the propeller shaft 40 to transmit forward or reverse motion to the propeller shaft 40 from the driving gear 52.
s ~7363-710 The marine propulsion device 10 further comprises means for pumping water from the exterior of the propulsion unit 34 to the engine 16. The means for pumping water includes a plurality of water inlet openings 60 in the propulsion unit 34, the inlet openings 60 being located so as to be underwater during normal operation of the marine propulsion device 10. The pumping means also includes a pump 62, and an inlet passage 64 communicating between the pump 62 and the inlet openings 60. In the illustrated construction, the pump 62 is located rearwardly of the horizontal drive shaft 42 and is driven by an extension of the horizontal drive shaft 42. Such a pump location is described in greater detail in the above mentioned Canadian Patent 1,220,672. It should be understood that other pump locations and other means for driving the pump are within the scope of the invention.
The pumping means also includes conduit means extending from the pump 62 to the engine 16.
While various suitable conduit means can be em~loyed, in the preferred embodiment, the conduit means includes a conduit member 66 (see Fig. 2) mounted in an opening 68 in the pivot housing 30, the conduit member 66 having opposite front and rear ends and a drain opening 70. A pair of 0-rings 72 seal the joint between the conduit member 66 and the opening 68. A shoulder 73 on the conduit member 66 engages the pivot housing 30 at the forward end of the opening 68. The rear end (to the right in Fig. 2) of the conduit member 66 is externally threaded, and the conduit member 66 is secured in the opening 68 in the pivot housing 30 by a nut 74 threaded onto the rear end of the conduit member 66. The conduit member 66 is mounted in the pivot housing 30 such that the rear end of the conduit member 66 extends rearwardly of the rear end of the pivot housing 30. l~he front end (to the left in Fig. 2) of the conduit member 66 forms a nipple.
The conduit means also includes a first conduit of water hose 76 communicating between the front end of the conduit member 66 and the engine 16 for conducting water from the conduit member 66 to the engine 16. The water hose 76 is secured to the nipple formed by the front end of the conduit member 66 by a conventional band clamp 78. The water hose 76 extends through the gimbal ring 20, through an opening (not shown) in the gimbal housing 18, and through an opening (not shown) in the transom 14 to the engine 16. The conduit means ~urther includes a second conduit communicating with the pump 62 for conducting water from the pump 62 to the conduit member 66, the second conduit being automatically connected to the rear end of the conduit member 66 when the propulsion unit 34 is connected to the pivot nousing 30, and being automatically disconnected from the conduit member 66 when the propulsion unit 34 is disconnected from the pivot housing 30. In the ~ 67363-710 preferred embodiment, the second conduit is a water supply cavity or recess 80 (see Fig. 1) communicating between the pump 62 and an opening 81 (see Fig. 3) in the front end of the propulsion unit 34. The water supply cavity 80 and the conduit member 66 are located such that the rear end of the conduit member 66 extends into the water supply cavity 80 when the propulsion unit 34 is connected to the pivot housing 30. Therefore, the water supply cavity 80 automatically communicates with the conduit member 66 when the propulsion unit 34 is connected to the pivot housing 30. A seal 83 surrounds the opening 81 and seals the joint between the pivot housing 30 and the propulsion unit 34 so that the water supply cavity 80 sealingly communicates with the conduit member 66.
The marine propulsion device 10 further comprises means for draining water from the conduit means and, as shown in the drawings, includes a branch duct extending from a portion of the conduit intermediate the pump and the engine 16. More particularly, in the preferred embodiment, the draining means includes, in the pivot housing 30, an internally threaded opening 82 (see Fig. 2) communicable with one of the side faces of the propulsion assembly and, in the conduit member 66, the drain opening 70 communicating with the opening 82 in the pivot housing 30 so as to be communicable with the atmosphere. The conduit member 66 has a -lOA-drain groove 84 communicating with the drain opening 70 and running circumferentially around the conduit member 66 to insure communication of the drain opening 70 with the opening 82 in the event that the conduit member 66 is rotated such that the drain opening 70 is not aligned with the opening 82. The draining means further includes a drain plug 86 removably and threadably securable in the opening 82 in the pivot housing 30 so as to prevent communication between the drain opening 70 and the atmosphere. As best shown in Figure 2, the drain plug 86 is inserted into the opening 82 from the exterior of the pivot housing 30 and is accessible from the exterior of the pivot housing 30.
In the preferred embodiment, the conduit means has a low point below both the pump 62 and the connection of the conduit means to the engine 16, and the draining means affords drainage of water from adjacent the low point of the conduit means.
Thus, the first and second conduits (the water hose 76 and the water supply cavity 80) and the conduit member 66 have a low point between both the pump 62 and the engine 16, and the drain opening 70 in the conduit member 66 is located adjacent the low point.
The marine propulsion device 10 functions as follows. When the propulsion unit 34 is connected to the pivot housing 30, the water supply cavity 80 is automatically connected to the rear end ~c~
of the conduit member 66, so that the pump 62 is connected to the engine 16 via the water supply cavity 80, the conduit member 66, and the water hose 76. When the marine propulsion device 10 is removed from the water for storage, any water between the pump 62 and the inlet openings 60 will drain out through the inlet openings 60. When the drain plug 86 is removed from the pivot housing 30, substantially all water between the pump 62 and the engine 16 (in the water supply cavity 80, the conduit member 66, or the water hose 76) will drain out through the drain opening 70 and the opening 82.
Since the drain opening 70 is located adjacent the low point of the conduit means, virtually all of the water between the pump 62 and the engine 16 will be drained. This will substantially prevent freezing of water in the water supply system and damage to the marine propulsion device 10 due to expansion of frozen water in the water supply system. Water in the engine 16 is drained in the conventional manner, such as by opening petcocks on the engine 16.
When the propulsion unit 34 is disconnected from the pivot housing 30, the water supply cavity 80 is automatically disconnected from the rear end of the conduit member 66. No other disassembly o~ the water supply system is necessary.
Various other features of the invention are set forth in the following claims:
MARINE PROPULSION DEVICE WATER SUPPLY SYSTEM
-BACKGROUND OF THE INVENTION
The invention relates to water supply systems for marine propulsion devices.
Prior marine propulsion device water supply systems commonly include a pump for pumping coolant water to the engine, and a conduit extending between the pump and the engine for conducting the water to the engine. These prior water supply systems are often difficult to drain when the marine propulsion device is removed from the water for storage, and this can result in water freezing in the water supply system and damaging the marine propulsion device. Also, these prior water supply systems often complicate assembly and disassembly of marine propulsion devices because these prior water supply systems must also be assembled and disassembled.
Attention is directed to Canadian Patent 1,220,672 granted April 24, 1987, and titled "Water Pump Location for Marine Propulsion Device."
SUMMARY OF THE INVENTION
The invention provides a marine propulsion device comprising an internal combustion engine, a propulsion unit adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, which propulsion unit includes a propeller operably connected ~o the engine, means for pumping water from the exterior of the propulsion unit to the .~$
1:~53qL05 engine and including a pump, and conduit means extendinq from the pump to the engine, and means for draining water from the conduit means.
In one embodiment, the conduit means ha~ a low point below both the pump and the connection of the conduit means to the engine, and the draining means affords drainage of water from adjacent the low point of the conduit means.
In one embodiment, the device further comprise~ a pivot hou~ing adapted to be pivotally mounted on the transom for pivotal movement about the steering and tilting axe~, the propul~ion unit i8 removably secured to the pivot housing for pivotal movement therewith, the pump i6 located in the propulsion unit, and the conduit means extends from the pump through the pivot housing to the engine.
In one embodimen~, the draining means includes an opening in the conduit means, and a drain plug removably secured in the opening.
In one embodi~ent, the marine propulsion device ha~ an exterior, and the drain plug is accessible from the exterior of the marine propulsion device.
The invention also pr3~ides a marine propulsion device comprising an internal combustion engine, means for pumping water to the engine and including a pump, and conduit mean~ extending from the pump to the engine and having a low point below both the pump and the connection of the conduit means to the engine, and means for draining water from adjacent the low point of the conduit means.
The invention also provides a marine propulsion device co~prising an internal combustion engine, a pivot housing adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom absut a generally vertical steering axis, and about a generally horizontal tilt axis, the pivot hou~ing including a rear end, an opening communicable with the atmo6phere, a conduit member having opposite front and rear ends and a drain opening intermediate the end~ and communicating with the openi~g in the pivot housing 80 as to be communicable with the a~mosphere, the rear end of the conduit member extendiny rearwardly of the rear end of the pivot housing, and a drain plug removably ~ecurable in the opening in the pivot hou~ing ~o as to prevent communication between the drain opening and the atmosphere, a fir~t conduit communicating b~tween the front end of the conduit member and the engine for conducting water from the conduit member to the engine, and a propul6ion unit removably connected to the pivot housing for pivotal movement therewith, the propulsion unit including a front end connected to the rear end of the pivot housing, a propeller operably connected to the engine, a pump for pumping water to the engine, an opening in the front end of the propulsion unit, and a second conduit communicating between the opening and the pump, the spening bein~
located such that the rear and of the conduit ~ember extends into the opening and communicates with the second conduit when the propulsion unit i6 connected to the pivot housing, whereby the second conduit is automatically connected to the rear end of the conduit member when the prop~lsion unit i8 connected to the pivot housing, and is auto~atically disconnected from the conduit member when the propul6ion unit is di~connec~ed from the pivot housing, 3.~
673~3-710 In one embodiment, the first and second conduits and the conduit member have a lowest point below both the pump and the engine, and the drain opening in the conduit member is located at the lowest point.
The invention also provides a marine propulsion device comprising a pivot housing having a rear end and being adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, an internal combustion engine, a first conduit communicating between the engine and the rear end of the pivot housing, and a propulsion unit having a forward end removably connected to the rear end of the pivot housing, the propulsion unit including a propeller operably connected to the engine, a pump for pumping water to the engine, and a second conduit communicating between the pump and the forward end of the propulsion unit, the second conduit being automatically connected to the first conduit when the propulsion unit is connected to the pivot housing, and being automatically disconnected from the first conduit when the propulsion unit is disconnected from the pivot housing.
The invention also provides a marine propulsion device comprising an internal combustion engine, a propulsion assembly adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis and about a generally horizontal tilt axis, which propulsion assembly includes a housing s having an exterior side face, a propeller supported by the housing and operably connected to the engine, means in the housing for pumping water from the exterior of the propulsion unit to the engine and including a pu~p, conduit means extending in the housing from the pump to the engine and including a portion intermediate the pump and the engine, and means in the propulsion assembly including a branch duct communicating between the intermediate portion of the conduit means and the housing exterior side face, and a selectively movable member removably received in the branch duct and accessible from the exterior of the propulsion assembly for selectively draining water through the branch duct from said conduit means.
The invention also provides a marine propulsion device comprising an internal combustion engine, a propulsion assembly adapted to be supported for tilting and steering movement relative to a boat transom and including opposite exterior side faces, means for pumping water to the engine and including a pump located in the propulsion assembly, and conduit means extending from the pump to the engine and including a portion which is intermediate the pump and the engine and which has a low point spaced from and below both the pump and the connection of the conduit means to the engine, and means including a branch duct communicating between the low point and one of the side faces and including a selectively movable member removably located in the branch duct and accessible from the exterior for draining water ~rom adjacent the low point of the conduit means.
The invention also provides a marine propulsion device comprising an internal combustion engine, a pivot housing adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis and about a generally horizontal tilt axis, which pivot housing includes a rear end, and an opening communicating with the atmosphere, a conduit member extending in the pivot housing and having opposite front and rear ends, which rear end of the conduit member extends rearwardly of the rear end of the pivot housing, which conduit member also includes a drain opening communicating with the opening in the pivot housing so as to be communicable with the atmosphere, a drain plug removably securable in the opening in the pivot housing so as to prevent communication between the drain opening and the atmosphere, a first conduit communicating between the front end of the conduit member and the engine for conducting water from the conduit member to the engine, and a propulsion unit removably connected to the pivot housing for pivotal movement therewith, the propulsion unit including a front end connected to the rear end of the pivot housing, a propeller operably connected to the engine, a pump for pumping water to the engine, an opening in the front end of the propulsion unit, and a second conduit communicating between the opening in the front end of the propulsion unit and the pump, which opening in the front end of the propulsion unit is located such that the rear end of the conduit member extends into the opening in the front end of the propulsion unit 3~,~5 and communicates with the second conduit when the propulsion unit is connected to the pivot housing, whereby communication of the second conduit member is effected when the propulsion unit is connected to the pivot housing.
The invention also provides a marine propulsion device comprising a pivot housing having a rear end and being adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis and about a generally horizontal tilt a~is, an internal combustion engine, a first conduit communicating between the engine and the rear end of the pivot housing, and a propulsion unit having a forward end removably connected to the rear end of the pivot housing, which propulsion unit includes a propeller operably connected to the engine, a pump for pumping water to the engine, and a second conduit communicating between the pump and the forward end of the propulsion unit so as to be positioned to effect communication with the first conduit when the propulsion unit is connected to the pivot housing and so as to be removed from communication with the first conduit when the propulsion unit is disconnected and removed from the pivot housing.
The invention also provides a marine propulsion device comprising a pivot housing adapted to be pivotally mounted on the transom of a boat and including a rear end, a conduit extending in the pivot housing and having a rear end, a drain opening in the pivot housing and communicating with the conduit and with the atmosphere, a drain plug removably securable in the drain opening so as to prevent communication between the conduit and the atmosphere, and a propulsion unit removably connected to the pivot housing and including a front end connected to the rear end of the pivot housing, and a recess located in the front end of the propulsion unit such that the rear end of the conduit communicates with the recess when the propulsion unit is connected to the pivot housing.
The invention also provides a marine propulsion device comprising a pivot housing adapted to be pivotally mounted on the transom of a boat and including a rear end, a propulsion unit removably connected to the pivot housing and including a front end connected to the rear end of the pivot housing, conduit means in the pivot housing and in the propulsion unit and including a duct extending in the pivot housing and having a rear end, and a recess located in the front end of the propulsion unit and positioned such that the rear end of the duct communicates with the recess when the propulsion unit is connected to the pivot housing, and drainage means located in one of the pivot housing and the propulsion unit and communicating between the conduit means and the atmosphere and including a removable drain plug accessible from the atmosphere.
The invention also provides a marine propulsion device comprising a propulsion assembly having opposite exterior side faces and including a pivot housing adapted to be pivotally mounted on the transom of a boat and including a rear end, a propulsion unit removably connected to the pivot 67363~710 housing and including a pump, and a front end connected to the rear end of the pivot housing, conduit means in the pivot housing and in the propulsion unit and including a duct extending in the pivot housing and having a rear end, and a recess in the propulsion unit, communicating with the pump, and having an end located in the front end of the propulsion unit and positioned such that the recess communicates with the rear end of the duct when the propulsion unit is connected to the pivot housing, which conduit also includes a portion intermediate the engine and the pump and including a part of the duct and of the recess, and drainage means located in one of the pivot housing and the propulsion unit and including a branch duct communicating between the intermediate portion of the conduit means and one of the side faces and including a removable drain plug removably located in the duct and accessible from the exterior of the one of the side faces of the propulsion assembly.
A principal feature of the invention is the provision of a marine propulsion device comprising means for pumping water from the exterior of the propulsion unit to the engine and including a pump, and conduit means extending from the pump to the engine, the conduit means having a lowest point below both the pump and the engine, and means for draining water from the lowest point of the conduit means.
; 3 ~d ~D 5 Another principal fea~ure of the invention i~ the provision o:E a marine propulsion device compri~ing a pivot housing including a rear end, an opening communicable wi~h the atmosphere, a condui~ member having opposite front and rear ends and a drain opening intermediate the ends and communicating with the opening in the pivot housing so as to be communicable with the atmosphere, and a drain plug removably ~ecurable in the opening in the pivot hou~ing ~o a~ to prevent communication between the drain opening and the atmosphere, a first conduit communicating between the front end o~ the conduit member and the engine, and a propulsion unit including a front end connected to the rear end of the piYot housing, a pump for pumping water to the engine, an opening in the front end of the propulsion unit, and a second conduit communicating wi~h the pump for conducting water from the pump to the conduit member, the ~econd conduit being automatically connected to the rear end of the conduit member when the propul6ion unit is connected to the pivot housing, and being automatically disconnected from the conduit member when the propul~ion unit i6 disconnected ~rom the pivot housing.
Other features and advantages of the invention will become apparent to those skilled in tbe art upon review of the following detailed description, claims and drawings, DESCRIPTION OF THE DRAWINGS
Figure 1 is a side elevational view of a marine propulsion device embodying the invention Figure 2 is an enlarged, partial cross sectional view taken from above the conduit member.
~Z.~ 05 ~, Figure 3 is an enlarged, partial view of the pivot hou~ing and propulsion unit showing the conduit member.
Before one embodiment of the invention i~ explained in detail, it ii to be understood that the invention is not limited in its application to the details of construction and the arrangemen~s of components zet forth in the following description or illustrated in the drawings, The invention is capable of other embodiments and of being practiced or beinq carried out in various ways. Also, it i8 to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
DESCRIPTION OF _HE PREFERRED EMBODIMENT
Illustrated in the drawings is a marine propulsion device 10 mounted on a boat 12 having a transom 14, The marine propulsion device 10 i of the stern drive or inboardJoutboard type.
As best shown in Fig. 1, the marine propulsion device 10 comprises a water cooled engine 16 securely mounted on the boat frame by suitable means such as rubber mounts tnot shown). The marine propulsion device 10 also compri~es a gimbal housing 18 mounted on the outer surface of the boat transom 14 and fixedly attached to the boat transom 14. The gimbal housing 18 can be attached to the boat transom 14 by any suitable means. such as bolts extending through the transom 14.
The marine propulsion device 10 also compri~es a gimbal ring 20 connected to the gimbal housing 18 for pivotal movement relative to the gimbal housing 18 about a generally vertical steering axis ~ 67363-710 (not shown), and a pivot housing 30 connected to the gimbal ring 20 for pivotal movement relative to the gimbal ring 20 about a generally horizontal tilt axis (not shown). Such a construction is well known in the art and need not be described in greater detail.
The marine propulsion device 10 also comprises a propulsion housing or unit 34 which, together with the pivot housing 30, constitutes a propulsion assembly and which is removably connected to the pivot housing 30 for common pivotal movement of the propulsion unit 34 with the pivot housing 30.
In the illustrated construction, the propulsion unit 34 is removably connected to the pivot housing 30 by a plurality of bolts 36. Both the pivot housing 30 and the propulsion housing or unit 34 have, as shown in the drawings, exterior side faces. The propulsion housing or unit 34 includes a propeller 38 mounted on a propeller shaft 40, and a generally horizontal drive shaft 42 having one end removably connected to the engine 16 and an opposite end having thereon a bevel gear 44. A universal joint 46 attached to the horizontal drive shaft 42 allows pivotal movement of the drive shaft 42 with the propulsion unit 34. The bevel gear 44 drives a bevel gear 48 on the upper end of a vertical drive shaft 50. The lower end of the vertical drive shaft 50 has thereon a driving gear 52. A reversible transmission selectively clutches a pair of driven gears 54 to the propeller shaft 40 to transmit forward or reverse motion to the propeller shaft 40 from the driving gear 52.
s ~7363-710 The marine propulsion device 10 further comprises means for pumping water from the exterior of the propulsion unit 34 to the engine 16. The means for pumping water includes a plurality of water inlet openings 60 in the propulsion unit 34, the inlet openings 60 being located so as to be underwater during normal operation of the marine propulsion device 10. The pumping means also includes a pump 62, and an inlet passage 64 communicating between the pump 62 and the inlet openings 60. In the illustrated construction, the pump 62 is located rearwardly of the horizontal drive shaft 42 and is driven by an extension of the horizontal drive shaft 42. Such a pump location is described in greater detail in the above mentioned Canadian Patent 1,220,672. It should be understood that other pump locations and other means for driving the pump are within the scope of the invention.
The pumping means also includes conduit means extending from the pump 62 to the engine 16.
While various suitable conduit means can be em~loyed, in the preferred embodiment, the conduit means includes a conduit member 66 (see Fig. 2) mounted in an opening 68 in the pivot housing 30, the conduit member 66 having opposite front and rear ends and a drain opening 70. A pair of 0-rings 72 seal the joint between the conduit member 66 and the opening 68. A shoulder 73 on the conduit member 66 engages the pivot housing 30 at the forward end of the opening 68. The rear end (to the right in Fig. 2) of the conduit member 66 is externally threaded, and the conduit member 66 is secured in the opening 68 in the pivot housing 30 by a nut 74 threaded onto the rear end of the conduit member 66. The conduit member 66 is mounted in the pivot housing 30 such that the rear end of the conduit member 66 extends rearwardly of the rear end of the pivot housing 30. l~he front end (to the left in Fig. 2) of the conduit member 66 forms a nipple.
The conduit means also includes a first conduit of water hose 76 communicating between the front end of the conduit member 66 and the engine 16 for conducting water from the conduit member 66 to the engine 16. The water hose 76 is secured to the nipple formed by the front end of the conduit member 66 by a conventional band clamp 78. The water hose 76 extends through the gimbal ring 20, through an opening (not shown) in the gimbal housing 18, and through an opening (not shown) in the transom 14 to the engine 16. The conduit means ~urther includes a second conduit communicating with the pump 62 for conducting water from the pump 62 to the conduit member 66, the second conduit being automatically connected to the rear end of the conduit member 66 when the propulsion unit 34 is connected to the pivot nousing 30, and being automatically disconnected from the conduit member 66 when the propulsion unit 34 is disconnected from the pivot housing 30. In the ~ 67363-710 preferred embodiment, the second conduit is a water supply cavity or recess 80 (see Fig. 1) communicating between the pump 62 and an opening 81 (see Fig. 3) in the front end of the propulsion unit 34. The water supply cavity 80 and the conduit member 66 are located such that the rear end of the conduit member 66 extends into the water supply cavity 80 when the propulsion unit 34 is connected to the pivot housing 30. Therefore, the water supply cavity 80 automatically communicates with the conduit member 66 when the propulsion unit 34 is connected to the pivot housing 30. A seal 83 surrounds the opening 81 and seals the joint between the pivot housing 30 and the propulsion unit 34 so that the water supply cavity 80 sealingly communicates with the conduit member 66.
The marine propulsion device 10 further comprises means for draining water from the conduit means and, as shown in the drawings, includes a branch duct extending from a portion of the conduit intermediate the pump and the engine 16. More particularly, in the preferred embodiment, the draining means includes, in the pivot housing 30, an internally threaded opening 82 (see Fig. 2) communicable with one of the side faces of the propulsion assembly and, in the conduit member 66, the drain opening 70 communicating with the opening 82 in the pivot housing 30 so as to be communicable with the atmosphere. The conduit member 66 has a -lOA-drain groove 84 communicating with the drain opening 70 and running circumferentially around the conduit member 66 to insure communication of the drain opening 70 with the opening 82 in the event that the conduit member 66 is rotated such that the drain opening 70 is not aligned with the opening 82. The draining means further includes a drain plug 86 removably and threadably securable in the opening 82 in the pivot housing 30 so as to prevent communication between the drain opening 70 and the atmosphere. As best shown in Figure 2, the drain plug 86 is inserted into the opening 82 from the exterior of the pivot housing 30 and is accessible from the exterior of the pivot housing 30.
In the preferred embodiment, the conduit means has a low point below both the pump 62 and the connection of the conduit means to the engine 16, and the draining means affords drainage of water from adjacent the low point of the conduit means.
Thus, the first and second conduits (the water hose 76 and the water supply cavity 80) and the conduit member 66 have a low point between both the pump 62 and the engine 16, and the drain opening 70 in the conduit member 66 is located adjacent the low point.
The marine propulsion device 10 functions as follows. When the propulsion unit 34 is connected to the pivot housing 30, the water supply cavity 80 is automatically connected to the rear end ~c~
of the conduit member 66, so that the pump 62 is connected to the engine 16 via the water supply cavity 80, the conduit member 66, and the water hose 76. When the marine propulsion device 10 is removed from the water for storage, any water between the pump 62 and the inlet openings 60 will drain out through the inlet openings 60. When the drain plug 86 is removed from the pivot housing 30, substantially all water between the pump 62 and the engine 16 (in the water supply cavity 80, the conduit member 66, or the water hose 76) will drain out through the drain opening 70 and the opening 82.
Since the drain opening 70 is located adjacent the low point of the conduit means, virtually all of the water between the pump 62 and the engine 16 will be drained. This will substantially prevent freezing of water in the water supply system and damage to the marine propulsion device 10 due to expansion of frozen water in the water supply system. Water in the engine 16 is drained in the conventional manner, such as by opening petcocks on the engine 16.
When the propulsion unit 34 is disconnected from the pivot housing 30, the water supply cavity 80 is automatically disconnected from the rear end of the conduit member 66. No other disassembly o~ the water supply system is necessary.
Various other features of the invention are set forth in the following claims:
Claims (26)
1. A marine propulsion device comprising an internal combustion engine, a propulsion unit adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, said propulsion unit including a propeller operably connected to said engine, means for pumping water from the exterior of said propulsion unit to said engine and including a pump, and conduit means extending from said pump to said engine, and means for draining water from said conduit means.
2. A marine propulsion device as set forth in Claim 1 wherein said conduit means has a low point below both said pump and the connection of said conduit means to said engine, and wherein said draining means affords drainage of water from adjacent said low point of said conduit means.
3. A marine propulsion device as set forth in Claim 1 and further comprising a pivot housing adapted to be pivotally mounted on the transom for pivotal movement about said steering and tilting axes, wherein said propulsion unit is removably secured to said pivot housing for pivotal movement therewith, wherein said pump is located in said propulsion unit, and wherein said conduit means extends from said pump through said pivot housing to said engine.
4. A marine propulsion device as set forth in Claim 3 wherein said conduit means has a low point below both said pump and the connection of said conduit means to said engine, and wherein said draining means affords drainage of water from adjacent said low point of said conduit means.
5. A marine propulsion device as set forth in Claim 4 wherein said draining means includes an opening in said conduit means, and a drain plug removably secured in said opening.
6. A marine propulsion device as set forth in Claim 5 wherein said marine propulsion device has an exterior, and wherein said drain plug is accessible from the exterior of said marine propulsion device.
7. A marine propulsion device comprising an internal combustion engine, means for pumping water to said engine and including a pump, and conduit means extending from said pump to said engine and having a low point below both said pump and the connection of said conduit means to said engine, and means for draining water from adjacent said low point of said conduit means.
8. A marine propulsion device as set forth in Claim 7 wherein said draining means includes an opening in said conduit means, and a drain plug removably secured in said opening.
9. A marine propulsion device as set forth in Claim 8 wherein said marine propulsion device has an exterior, and wherein said drain plug is accessible from the exterior of said marine propulsion device.
10. A marine propulsion device comprising an internal combustion engine, a pivot housing adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, said pivot housing including a rear end, an opening intermediate said ends and communicable with the atmosphere, a conduit member having opposite front and rear ends and a drain opening communicating with said opening in said pivot housing so as to be communicable with the atmosphere, said rear end of said conduit member extending rearwardly of said rear end of said pivot housing, and a drain plug removably securable in said opening in said pivot housing so as to prevent communication between said drain opening and the atmosphere, a first conduit communicating between said front end of said conduit member and said engine for conducting water from said conduit member to said engine, and a propulsion unit removably connected to said pivot housing for pivotal movement therewith, said propulsion unit including a front end connected to said rear end of said pivot housing, a propeller operably connected to said engine, a pump for pumping water to said engine, an opening in said front end of said propulsion unit, and a second conduit communicating between said opening and said pump, said opening being located such that said rear end of said conduit member extends into said opening and communicates with said second conduit when said propulsion unit is connected to said pivot housing,
10. A marine propulsion device comprising an internal combustion engine, a pivot housing adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, said pivot housing including a rear end, an opening intermediate said ends and communicable with the atmosphere, a conduit member having opposite front and rear ends and a drain opening communicating with said opening in said pivot housing so as to be communicable with the atmosphere, said rear end of said conduit member extending rearwardly of said rear end of said pivot housing, and a drain plug removably securable in said opening in said pivot housing so as to prevent communication between said drain opening and the atmosphere, a first conduit communicating between said front end of said conduit member and said engine for conducting water from said conduit member to said engine, and a propulsion unit removably connected to said pivot housing for pivotal movement therewith, said propulsion unit including a front end connected to said rear end of said pivot housing, a propeller operably connected to said engine, a pump for pumping water to said engine, an opening in said front end of said propulsion unit, and a second conduit communicating between said opening and said pump, said opening being located such that said rear end of said conduit member extends into said opening and communicates with said second conduit when said propulsion unit is connected to said pivot housing,
Claim 10 (continued) whereby said second conduit is automatically connected to said rear end of said conduit member when said propulsion unit is connected to said pivot housing, and is automatically disconnected from said conduit member when said propulsion unit is disconnected from said pivot housing.
11. A marine propulsion device as set forth in Claim 10 wherein said first and second conduits and said conduit member have a low point below both said pump and the connection of said first conduit to said engine, and wherein said drain opening in said conduit member is located adjacent said low point.
12. A marine propulsion device as set forth in Claim 10 wherein said propulsion unit is removably connected to said pivot housing by a plurality of bolts.
13. A marine propulsion device as set forth in Claim 10 wherein said pivot housing includes a conduit opening in said rear end of said pivot housing, wherein said conduit member is located in said conduit opening, wherein said rear end of said conduit member is externally threaded, wherein said conduit member includes a shoulder engaging said pivot housing adjacent the front end of said conduit opening, and wherein said conduit member is secured in said conduit opening by a nut threaded onto said rear end of said conduit member and engaging said pivot housing adjacent the rear end of said conduit opening.
14. A marine propulsion device as set forth in Claim 13 wherein said conduit member also has an annular drain groove extending circumferentially around said conduit member and communicating with said drain opening to insure communication of said drain opening with said opening in said pivot housing in the event that said conduit member is rotated such that said drain opening is not aligned with said opening in said pivot housing.
15. A marine propulsion device comprising a pivot housing having a rear end and being adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, an internal combustion engine, a first conduit communicating between said engine and said rear end of said pivot housing, and a propulsion unit having a forward end removably connected to said rear end of said pivot housing, said propulsion unit including a propeller operably connected to said engine, a pump for pumping water to said engine, and a second conduit communicating between said pump and said forward end of said propulsion unit, said second conduit being automatically connected to said first conduit when said propulsion unit is connected to said pivot housing, and being automatically disconnected from said first conduit when said propulsion unit is disconnected from said pivot housing.
16. A marine propulsion device as set forth in Claim 15 and further comprising means for draining water from said first and second conduits.
17. A marine propulsion device as set forth in Claim 16 wherein said first and second conduits have a low point below both the connection of said first conduit to said engine and said pump, and wherein said draining means affords drainage of water from adjacent said low point.
18. A marine propulsion device comprising an internal combustion engine, a propulsion assembly adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis and about a generally horizontal tilt axis, said propulsion assembly including a housing having an exterior side face, a propeller supported by said housing and operably connected to said engine, means in said housing for pumping water from the exterior of said propulsion unit to said engine and including a pump, conduit means extending in said housing from said pump to said engine and including a portion intermediate said pump and said engine, and means in said propulsion assembly including a branch duct communicating between said intermediate portion of said conduit means and said housing exterior side face, and a selectively movable member removably received in said branch duct and accessible from the exterior of said propulsion assembly for selectively draining water through said branch duct from said conduit means.
19. A marine propulsion device as set forth in Claim 18 wherein said conduit means has a low point below both said pump and the connection of said conduit means to said engine, and wherein said branch duct communicates with said low point of said conduit means.
20. A marine propulsion device as set forth in Claim 18 wherein said housing comprises a pivot housing adapted to be pivotally mounted on the transom for pivotal movement about said steering and tilting axes, and a propulsion unit removably secured to said pivot housing for pivotal movement therewith, wherein said pump is located in said propulsion unit, and wherein said conduit means extends from said pump through said pivot housing to said engine.
21. A marine propulsion device comprising an internal combustion engine, a propulsion assembly adapted to be supported for tilting and steering movement relative to a boat transom and including opposite exterior side faces, means for pumping water to said engine and including a pump located in said propulsion assembly, and conduit means extending from said pump to said engine and including a portion which is intermediate said pump and said engine and which has a low point spaced from and below both said pump and the connection of said conduit means to said engine, and means including a branch duct communicating between said low point and one of said side faces and including a selectively movable member removably located in said branch duct and accessible from the exterior for draining water from adjacent said low point of said conduit means.
22. A marine propulsion device comprising an internal combustion engine, a pivot housing adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis and about a generally horizontal tilt axis, said pivot housing including a rear end, and an opening communicating with the atmosphere, a conduit member extending in said pivot housing and having opposite front and rear ends, said rear end of said conduit member extending rearwardly of said rear end of said pivot housing, said conduit member also including a drain opening communicating with said opening in said pivot housing so as to be communicable with the atmosphere, a drain plug removably securable in said opening in said pivot housing so as to prevent communication between said drain opening and the atmosphere, a first conduit communicating between said front end of said conduit member and said engine for conducting water from said conduit member to said engine, and a propulsion unit removably connected to said pivot housing for pivotal movement therewith, said propulsion unit including a front end connected to said rear end of said pivot housing, a propeller operably connected to said engine, a pump for pumping water to said engine, an opening in said front end of said propulsion unit, and a second conduit communicating between said opening in said front end of said propulsion unit and said pump, said opening in said front end of said propulsion unit being located such that said rear end of said conduit member extends into said opening in said front end of said propulsion unit and communicates with said second conduit when said propulsion unit is connected to said pivot housing, whereby communication of said second conduit member is effected when said propulsion unit is connected to said pivot housing.
23. A marine propulsion device comprising a pivot housing having a rear end and being adapted to be pivotally mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis and about a generally horizontal tilt axis, an internal combustion engine, a first conduit communicating between said engine and said rear end of said pivot housing, and a propulsion unit having a forward end removably connected to said rear end of said pivot housing, said propulsion unit including a propeller operably connected to said engine, a pump for pumping water to said engine, and a second conduit communicating between said pump and said forward end of said propulsion unit so as to be positioned to effect communication with said first conduit when said propulsion unit is connected to said pivot housing and so as to be removed from communication with said first conduit when said propulsion unit is disconnected and removed from said pivot housing.
24. A marine propulsion device comprising a pivot housing adapted to be pivotally mounted on the transom of a boat and including a rear end, a conduit extending in said pivot housing and having a rear end, a drain opening in said pivot housing and communicating with said conduit and with the atmosphere, a drain plug removably securable in said drain opening so as to prevent communication between said conduit and the atmosphere, and a propulsion unit removably connected to said pivot housing and including a front end connected to said rear end of said pivot housing, and a recess located in said front end of said propulsion unit such that said rear end of said conduit communicates with said recess when said propulsion unit is connected to said pivot housing.
25. A marine propulsion device comprising a pivot housing adapted to be pivotally mounted on the transom of a boat and including a rear end, a propulsion unit removably connected to said pivot housing and including a front end connected to said rear end of said pivot housing, conduit means in said pivot housing and in said propulsion unit and including a duct extending in said pivot housing and having a rear end, and a recess located in said front end of said propulsion unit and positioned such that said rear end of said duct communicates with said recess when said propulsion unit is connected to said pivot housing, and drainage means located in one of said pivot housing and said propulsion unit and communicating between said conduit means and the atmosphere and including a removable drain plug accessible from the atmosphere.
26. A marine propulsion device comprising a propulsion assembly having opposite exterior side faces and including a pivot housing adapted to be pivotally mounted on the transom of a boat and including a rear end, a propulsion unit removably connected to said pivot housing and including a pump, and a front end connected to said rear end of said pivot housing, conduit means in said pivot housing and in said propulsion unit and including a duct extending in said pivot housing and having a rear end, and a recess in said propulsion unit, communicating with said pump, and having an end located in said front end of said propulsion unit and positioned such that said recess communicates with said rear end of said duct when said propulsion unit is connected to said pivot housing, said conduit also including a portion intermediate said engine and said pump and including a part of said duct and of said recess, and drainage means located in one of said pivot housing and said propulsion unit and including a branch duct communicating between said intermediate portion of said conduit means and one of said side faces and including a removable drain plug removably located in said duct and accessible from the exterior of said one of said side faces of said propulsion assembly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72167185A | 1985-04-10 | 1985-04-10 | |
| US721,671 | 1985-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1253405A true CA1253405A (en) | 1989-05-02 |
Family
ID=24898839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000496703A Expired CA1253405A (en) | 1985-04-10 | 1985-12-02 | Marine propulsion device water supply system |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS61238590A (en) |
| AU (2) | AU581739B2 (en) |
| BE (1) | BE903764A (en) |
| CA (1) | CA1253405A (en) |
| DE (1) | DE3542578C2 (en) |
| GB (2) | GB2173756B (en) |
| HK (1) | HK21792A (en) |
| IT (1) | IT1183021B (en) |
| SE (1) | SE461784B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4950188A (en) * | 1989-05-12 | 1990-08-21 | Outboard Marine Corporation | Stern drive unit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2644474A (en) * | 1951-03-16 | 1953-07-07 | William C Lauth | Means for flushing outboard motors |
| US2857892A (en) * | 1957-05-17 | 1958-10-28 | Outboard Marine Corp | Marine engine with ballast tanks |
| US3181494A (en) * | 1963-01-07 | 1965-05-04 | Kiekhaefer Corp | Stern drive unit assembly |
| US3181495A (en) * | 1963-01-07 | 1965-05-04 | Kiekhaefer Corp | Coolant supply and exhaust discharge means for inboard-outboard drives |
| US3183880A (en) * | 1963-07-10 | 1965-05-18 | Outboard Marine Corp | Marine propulsion device |
| DE7820055U1 (en) * | 1978-07-04 | 1978-10-12 | Kitzig, Werner, 8011 Neukeferloh | FUEL CAN CONNECTOR FOR BOAT MOTORS |
| US4565534A (en) * | 1983-12-14 | 1986-01-21 | Outboard Marine Corporation | Water pump location for marine propulsion device |
-
1985
- 1985-12-02 DE DE3542578A patent/DE3542578C2/en not_active Expired - Fee Related
- 1985-12-02 SE SE8505669A patent/SE461784B/en not_active IP Right Cessation
- 1985-12-02 CA CA000496703A patent/CA1253405A/en not_active Expired
- 1985-12-02 GB GB8529694A patent/GB2173756B/en not_active Expired
- 1985-12-02 BE BE0/215942A patent/BE903764A/en not_active IP Right Cessation
- 1985-12-02 IT IT48853/85A patent/IT1183021B/en active
- 1985-12-02 JP JP60271297A patent/JPS61238590A/en active Pending
-
1986
- 1986-03-20 AU AU54971/86A patent/AU581739B2/en not_active Ceased
-
1988
- 1988-07-26 GB GB08817794A patent/GB2205797A/en not_active Withdrawn
- 1988-11-10 AU AU24986/88A patent/AU2498688A/en not_active Abandoned
-
1992
- 1992-03-26 HK HK217/92A patent/HK21792A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AU581739B2 (en) | 1989-03-02 |
| IT8548853A0 (en) | 1985-12-02 |
| JPS61238590A (en) | 1986-10-23 |
| HK21792A (en) | 1992-04-03 |
| SE461784B (en) | 1990-03-26 |
| AU5497186A (en) | 1986-10-16 |
| DE3542578C2 (en) | 1998-10-01 |
| GB2173756A (en) | 1986-10-22 |
| IT1183021B (en) | 1987-10-05 |
| GB8817794D0 (en) | 1988-09-01 |
| AU2498688A (en) | 1989-02-09 |
| SE8505669L (en) | 1986-10-11 |
| BE903764A (en) | 1986-06-02 |
| GB2173756B (en) | 1989-11-22 |
| DE3542578A1 (en) | 1986-10-16 |
| SE8505669D0 (en) | 1985-12-02 |
| GB2205797A (en) | 1988-12-21 |
| GB8529694D0 (en) | 1986-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |