CN115702104A - Vertical input outboard motor forward-reverse angled drive lower unit - Google Patents
Vertical input outboard motor forward-reverse angled drive lower unit Download PDFInfo
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- CN115702104A CN115702104A CN202180044562.4A CN202180044562A CN115702104A CN 115702104 A CN115702104 A CN 115702104A CN 202180044562 A CN202180044562 A CN 202180044562A CN 115702104 A CN115702104 A CN 115702104A
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- outboard motor
- gear
- lower unit
- vertical input
- intermediate shaft
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 230000001154 acute effect Effects 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000013019 agitation Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structure Of Transmissions (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention provides a vertical input outboard motor angled drive lower unit apparatus and method for improved operation in shallow water, muddy water, marsh water or water blocked by vegetation or obstacles. The vertically applied unidirectional rotational power from the outboard motor engine is transferred into operator controlled forward and reverse rotational power applied at an acute angle to the horizontal water surface. The device is cooled by an external water flow that is not introduced to any ports that may be plugged. The thrust redirection plate reflects the otherwise wasted propeller thrust, especially when operating in reverse, to achieve more efficient operation and reduce agitation of the water surface. The angled skeg and the angled orientation of the output shaft and housing deflect the obstruction.
Description
Cross Reference to Related Applications
Our application claims US 16/908,326 entitled "Vertical-Input Outboard Motor Forward-Reverse Angled-Drive Lower Unit," filed on 22/6/2020, now priority from patent No. US10,858,087, the entire disclosure of which is hereby incorporated by reference and hereby claimed for priority.
Technical Field
The present invention provides a vertical input outboard motor angled drive lower unit apparatus and method for improved operation.
Background
Conventional outboard motors have performance deficiencies when operated in shallow water, muddy water, marsh water, or water that is plugged by vegetation or obstacles. The propeller is mounted perpendicular to the water surface and must therefore be submerged for at least its full length of diameter. The gearbox is located immediately in front of the propeller and therefore must be submerged, placing a large amount of material under the water where it creates drag. Cooling is achieved by introducing water through the ports and circulating it, which can cause corrosion and damage when used in salt water or contaminated water, and cause the water inlet ports to clog and overheat when used in muddy water or vegetation or obstruction filled water. When operating in reverse, a substantial portion of the reverse thrust is directed towards the water surface, where it encounters negligible air pressure drag and is wasted when stirring the water surface, or towards the transom, where the portion of the thrust is cancelled out. Conventional outboard motors are subject to fouling and damage from obstacles, including thick vegetation and floats.
Typical shallow water outboard motors are known having an output shaft and propeller extending downwardly into the water at an angle. These shallow water outboard motors have cumbersome gearboxes located entirely above the waterline where they experience overheating. The gearbox is attached to the outboard motor engine at the back of the engine and can be driven only by the engine with a horizontal rotational output, not including the engine with a vertical rotational output. The gearing (gearing) and connection of these shallow water outboard motors makes shifting between forward and reverse directions awkward and cumbersome, and places the propeller at a long distance from the steering pivot point, making the steering operation awkward and cumbersome. These typical shallow water outboard motors exhibit the same drawbacks when operated in reverse as conventional outboard motors, with a substantial portion of the reverse thrust being wasted on the air and transom when agitating the surface, and experiencing fouling and damage from obstacles.
What is needed is an outboard motor lower unit that utilizes engine power provided for rotation in a vertical orientation that provides an output at an angle to the water surface, provides water cooling to prevent plugging or internal corrosion, provides simple and efficient shifting from forward to reverse, provides a small distance from the steering pivot point to the propeller, prevents damage or fouling by objects in the water, and redirects the otherwise wasted thrust (especially reverse) to useful thrust without churning the water surface.
Disclosure of Invention
The present invention provides a vertical input outboard motor angled drive lower unit apparatus and method particularly for improved operation in shallow, muddy, bogus or water blocked by vegetation or obstacles. The vertically applied unidirectional rotational power from the outboard motor engine is transferred into operator controlled forward and reverse rotational power applied at an acute angle to the horizontal water surface. The device is cooled by an external flow of water that is not introduced to any port that may be plugged. The thrust redirection plate reflects the otherwise wasted propeller thrust, especially when operating in reverse, to achieve more efficient operation and reduce agitation of the water surface. The angled skeg and the angled orientation of the output shaft and housing deflect the obstruction.
Drawings
Reference will now be made to the drawings wherein like parts are designated by like numerals and wherein:
fig. 1 is a side view of a vertical input outboard motor angle drive lower unit of the present invention.
Fig. 2 is a rear view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 3 is a perspective view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 4 is a partially exploded view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 5 is an exploded view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 6 is a side cross-sectional view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 7 is a perspective cut-away view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 8 is a schematic view of a prior art conventional outboard motor in use.
Fig. 9 is a schematic view of a typical prior art shallow water outboard motor in use.
Fig. 10 is a schematic view of the vertical input outboard motor angle drive lower unit of the present invention in use.
Fig. 11 is a schematic view of a prior art conventional outboard motor in use.
Fig. 12 is a schematic view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 13 is a schematic view of a prior art conventional outboard motor in use.
Fig. 14 is a schematic view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 15 is a schematic view of a prior art conventional outboard motor in use.
Fig. 16 is a schematic view of a typical prior art shallow water outboard motor in use.
Fig. 17 is a schematic view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 18 is a schematic view of a prior art conventional outboard motor in use.
Fig. 19 is a schematic view of a typical prior art shallow water outboard motor in use.
Fig. 20 is a schematic view of the vertical input outboard motor angle drive lower unit of the present invention.
Fig. 21 is a schematic view of the vertical input outboard motor angle drive lower unit of the present invention in use.
Detailed Description
Referring to fig. 1-4, a vertical input outboard motor forward-reverse angle drive lower unit 10 provides a lower unit for an outboard boat motor that is particularly suitable for operation in shallow, muddy, bog water, or water that is blocked by vegetation or obstacles.
The vertical input outboard motor angle drive lower unit 10 uses the rotational force supplied by the outboard motor engine to the vertical input shaft 31 and transfers that force, or the force in the reverse rotational direction, to the propeller mount 39, which propeller mount 39 is angled away from the vertical orientation of the vertical input shaft 31. The propeller mounted on the propeller mount 39 is at an acute angle to the surface and possibly to the bottom of the water. Preferably the angle is 30 degrees from horizontal. At this angle, the propeller will only require a vertical clearance of half its diameter, for example, a 10 inch diameter propeller will only require 5 inches of water depth. A thrust redirection plate 61 is provided above the mounted propeller and at a smaller acute angle to the water surface. When the propeller is pushed backward and downward to push the ship forward, the thrust redirection plate reflects the peripheral portion of the force, thereby preventing the water from being broken and wasted. When the propeller is pushed forward and up, pulling the boat backwards, the thrust redirection plate reflects the main part of the force (which is initially directed towards the water surface and the transom of the boat) as a more efficient thrust angled downwards. An angled skeg 62 is provided to protect the vertical input outboard motor from angularly driving the lower unit 10 and the mounted propeller.
The vertical input outboard motor angle drive lower unit 10 provides a housing 20 enclosing a geared shaft 30 and bearings 40. The majority of the housing 20 rests at least partially below the waterline during use, which serves to keep the vertical input outboard motor angled drive lower unit 10 cool during use. This cooling provides an advantage over the prior art, where some components are located above the waterline and are not substantially cooled, or are cooled by water introduced into the ports, which is a less than ideal solution when operating in salt water or other corrosive or contaminated water, or in muddy water, vegetation-plugged water, or other obstruction-filled water, where the water inlet ports may become plugged and cause overheating. Angled main housing 21, forward housing 22, input shaft housing 23, output shaft housing 24, and rear housing 25 are provided.
The vertical input outboard motor angle drive lower unit 10 provides a direction shift unit 50, which provides an improvement over the prior art. The shift actuator lever 51 provides operator control for shifting between the forward and reverse gears. Other components of the direction shifting unit 50 are housed within the rear housing 25 and are thus at least partially below the waterline and cooled.
Referring to fig. 5-7, a vertical input outboard motor angle drive lower unit 10 provides a housing 20 as identified above, and a geared shaft 30 and corresponding bearings 40 are provided to transfer the vertically oriented only unidirectional forward rotational force from the outboard motor engine to an angularly oriented forward or reverse rotational force to the installed propeller. The vertical input shaft 31 with the input shaft bearing 41 enclosed within the input shaft housing 23 obtains power in the form of unidirectional rotational force from the engine of the outboard motor. An input gear 32 with an input gear bearing 42 at the lower end of the vertical input shaft 31 rotates with the shaft and is configured to transfer force at right angles to a correspondingly configured gear. Bevel gears are suitable for this purpose, wherein other gear transmissions are possible.
An intermediate shaft 33 having an intermediate shaft bearing 43 is provided, the intermediate shaft 33 being primarily enclosed in the angled main housing 21, below the vertical input shaft 31 and at right angles to the vertical input shaft 31, thus extending horizontally, and from a forward end to a rearward end relative to the direction of travel of the outboard motor in use. A forward gear 34 having a forward gear bearing 44 and a reverse gear 35 having a reverse gear bearing 45 are mounted in a freely rotating manner around the intermediate shaft 33. The forward gear 34 and the reverse gear 35 are each mounted facing inwardly towards the middle of the intermediate shaft 33 and thus each face each other. Both the forward gear 34 and the reverse gear 35 are in contact with the input gear 32 and continuously rotate together with the input gear 32. In use, the forward gear 34 rotates in a direction causing rotation of the propeller generating forward thrust, and the reverse gear 35 rotates in the opposite direction causing rotation of the propeller generating reverse thrust.
The intermediate shaft can be rotated in a forward direction by the forward gear 34 or in a reverse direction by the reverse gear 35. The directional shift unit 50 controls which gear is engaged with the intermediate shaft 33 under the control of an operator using a shift actuator lever 51 that moves a shift wedge 52 enclosed within the rear housing 25. The shift clutch pawls 54 mounted on the intermediate shaft 33 between the forward gear 34 and the reverse gear 35 mesh with the forward gear 34 or the reverse gear 35 and transfer the rotation of the meshed gears to the intermediate shaft 33. A clutch pawl actuator pin 53 is mounted at the rearward end of the intermediate shaft 33. The clutch pawl actuator pin 53 contacts the shift wedge 52 and changes position corresponding to the portion of the shift wedge 52 that is being contacted. The change of the position of the clutch pawl actuator pin 53 is transferred to the change of the position of the shift clutch pawl 54, so that the shift clutch pawl 54 is changed between engaging the forward gear 34 or the reverse gear 35, thereby shifting the rotational direction of the intermediate shaft 33.
A drive bevel gear 36 having a drive bevel gear bearing 46 is mounted at the forward end of the intermediate shaft 33. This drive bevel gear 36 rotates together with the intermediate shaft in the forward direction or the reverse direction according to the operation of the direction shift unit 50.
The output shaft 38 is provided below with an output shaft bearing 48, the output shaft 38 being synchronized with the intermediate shaft 33 and at an acute angle to the intermediate shaft 33. As stated above, the preferred angle is 30 degrees from horizontal, and thus 120 degrees from the vertical of the vertical input shaft 31.
A driven bevel gear 37 having a driven bevel gear bearing 47 is mounted at the forward, upward end of the output shaft 38. Together, the drive bevel gear 36 and the driven bevel gear 37 transfer the rotational force of the intermediate shaft 33 to the output shaft 38 at an acute angle. The transferred rotational force may be a force that generates a forward thrust or a force that generates a reverse thrust.
Rotational force applied to the output shaft 38 is transferred to the mounted propeller through the propeller mount 39, producing corresponding forward or reverse thrust.
Referring to fig. 8-10, the distance from the steering pivot point to the propeller using the vertical input outboard motor to angularly drive the outboard motor of the lower unit 10 is close to that of a conventional outboard motor, and significantly shorter than that of a typical shallow water outboard motor. Shorter distances result in easier and better operation.
Referring to fig. 11 and 12, when it is desired or necessary to lift the motor, such as by using a "jack plate," driving the outboard motor of the lower unit 10 at an angle using a vertical input outboard motor will have a large portion of its gearbox housing above the water, reducing drag compared to a conventional outboard motor whose entire gearbox is under the water.
Referring to fig. 13 and 14, an outboard motor that drives the lower unit 10 at an angle using a vertical input outboard motor will more easily pass over a floating obstacle, with the angled skeg 62 and the angled orientation of the lower portion substantially protecting the installed propeller from damage or fouling caused by deflecting the obstacle, as compared to a conventional outboard motor.
Referring to fig. 15-17, an outboard motor that drives the lower unit 10 at an angle using a vertical input outboard motor will operate more efficiently under forward gears than a conventional outboard motor because the thrust redirection plate 61 prevents thrust from being directed upward against negligible air pressure and is therefore wasted, and the downward angled orientation of thrust can operate against the bottom in shallow water and otherwise against the increased pressure of deeper water.
Referring to fig. 18-21, the reverse thrust of conventional outboard motors and typical shallow water outboard motors is directed partially against air (where the reverse thrust is wasted) or against a transom (where the reverse thrust is cancelled), but the reverse thrust of the outboard motors that drive the lower unit 10 at an angle using a vertical input outboard motor is reflected by the thrust redirection plate 61 to direct the otherwise wasted thrust into useful thrust. The thrust redirection plate 61 also prevents the water surface from being agitated when operating in reverse.
Many other changes and modifications may be made in the system and method of the present invention without departing from the spirit thereof. It is therefore intended that the invention be limited only by the scope of the appended claims.
Claims (20)
1. A vertical input outboard motor angled drive lower unit apparatus comprising:
(i) A vertical input shaft adapted to accept rotational force from an outboard motor engine at an upper end;
(ii) An input gear at the lower end of the vertical input shaft adapted to transmit rotational forces at a right angle;
(iii) A middle shaft below and at right angles to the vertical input shaft, having a forward and rearward orientation;
(iv) A forward gear mounted around the intermediate shaft, facing inwardly toward the middle of the intermediate shaft, adapted to engage the input gear and rotate in a first rotational direction;
(v) A counter gear mounted around the intermediate shaft, facing inwardly toward the middle of the intermediate shaft, adapted to engage the input gear and rotate in a second rotational direction opposite the first rotational direction;
(vi) A drive bevel gear mounted on said intermediate shaft at said forward end adapted to transmit rotational force at an acute angle;
(vii) An output shaft below and at an acute angle to the intermediate shaft, having a forward and rearward orientation;
(viii) A driven bevel gear mounted on the output shaft at the forward end adapted to engage the drive bevel gear at an acute angle and rotate the output shaft in a corresponding rotational direction;
(ix) A propeller mount at the rearward end of the output shaft adapted to drive a mounted propeller in the rotational direction applied to the output shaft;
(x) A shift clutch pawl mounted on said intermediate shaft between said forward gear and said reverse gear, adapted to move along said intermediate shaft to mesh with said forward gear or said reverse gear, and adapted to apply said directional rotational force from said meshed gear to said intermediate shaft;
(xi) A clutch pawl actuator pin mounted at the rearward end of the intermediate shaft adapted to move the shift clutch pawl along the intermediate shaft into engagement with the forward gear or the reverse gear;
(xii) A shift wedge adapted to move the clutch pawl actuator pin such that the shift clutch pawl engages the forward gear or the reverse gear;
(xiii) A shift actuator rod extending upwardly from the shift wedge above the water line adapted to provide controlled positioning of the shift wedge;
(xiv) An input shaft housing adapted to enclose the vertical input shaft;
(xv) An angled main housing mounted to the input shaft housing at least partially below the water line, adapted to enclose and cool a portion of the intermediate shaft and the output shaft;
(xvi) A forward housing mounted to the angled main housing at least partially below the waterline, adapted to enclose and cool the forward ends of the intermediate shaft and the output shaft;
(xvii) A rear housing mounted to the angled main housing at least partially below the waterline adapted to enclose and cool the rearward end of the intermediate shaft and the shift wedge;
(xviii) An output shaft housing mounted to the angled main housing below the waterline, corresponding to a downward and rearward acute angle of the output shaft, adapted to enclose and cool the rearward portion of the output shaft;
(xix) A thrust redirection plate mounted on and over the output shaft housing at an acute angle adapted to reflect and redirect forces from a propeller mounted to the propeller mount; and
(xx) Angled skegs mounted on and below the forward housing, angled main housing, and output shaft housing adapted to prevent the vertical input outboard motor angled drive lower unit and mounted propeller from being affected by obstacles and shallow water bottom.
2. The vertical input outboard motor angle drive lower unit apparatus of claim 1, further comprising said output shaft below said intermediate shaft and at an acute angle of 20 to 40 degrees to said intermediate shaft.
3. The vertical input outboard motor angle drive lower unit apparatus of claim 1, further comprising the output shaft being below the intermediate shaft and at an acute angle of 25 to 35 degrees to the intermediate shaft.
4. The vertical input outboard motor angle drive lower unit apparatus of claim 1, further comprising said output shaft below and at an acute angle of 30 degrees to said intermediate shaft.
5. The vertical input outboard motor angle drive lower unit apparatus of claim 1, wherein said input gear, said forward gear, and said reverse gear are bevel gears.
6. The vertical input outboard motor angle drive lower unit apparatus of claim 1, wherein said input gear, said forward gear, and said reverse gear are spiral bevel gears.
7. The vertical input outboard motor angle drive lower unit apparatus of claim 1, wherein said drive bevel gear and said driven bevel gear are helical bevel gears.
8. The vertical input outboard motor angle drive lower unit apparatus of claim 1, wherein said thrust redirection plate further comprises a generally planar structure extending sufficiently forward and rearward and laterally to extend beyond the operational area of a propeller mounted to said propeller mount.
9. The vertical input outboard motor angle drive lower unit apparatus of claim 1, wherein the thrust redirection sheet further comprises a substantially planar structure extending at least 12 inches in a forward-rearward dimension and at least 10 inches laterally.
10. The vertical input outboard motor angle drive lower unit apparatus of claim 1, wherein the angled skeg extends downward at an angle greater than the angle of the output shaft.
11. A method of driving a lower unit at an angle with a vertical input outboard motor, comprising:
(i) Providing a vertical input outboard motor angle drive lower unit apparatus, the vertical input outboard motor angle drive lower unit apparatus comprising:
(a) A vertical input shaft adapted to accept a rotational force from an outboard motor engine at an upper end;
(b) An input gear at the lower end of the vertical input shaft adapted to transmit rotational force at a right angle;
(c) A middle shaft below and at right angles to the vertical input shaft, having a forward and a rearward orientation;
(d) A forward gear mounted around the intermediate shaft, facing inwardly toward the middle of the intermediate shaft, adapted to engage the input gear and rotate in a first rotational direction;
(e) A counter gear mounted around the intermediate shaft, facing inwardly toward the middle of the intermediate shaft, adapted to engage the input gear and rotate in a second rotational direction opposite the first rotational direction;
(f) A drive bevel gear mounted on said intermediate shaft at said forward end adapted to transmit rotational force at an acute angle;
(g) An output shaft below and at an acute angle to the intermediate shaft, having a forward and a rearward orientation;
(h) A driven bevel gear mounted on the output shaft at the forward end adapted to engage the drive bevel gear at an acute angle and rotate the output shaft in a corresponding rotational direction;
(i) A propeller mount at the rearward end of the output shaft adapted to drive a mounted propeller in the rotational direction applied to the output shaft;
(j) A shift clutch pawl mounted on said intermediate shaft between said forward gear and said reverse gear, adapted to move along said intermediate shaft to mesh with said forward gear or said reverse gear, and adapted to apply said directional rotational force from said meshed gear to said intermediate shaft;
(k) A clutch pawl actuator pin mounted at the rearward end of the intermediate shaft adapted to move the shift clutch pawl along the intermediate shaft into engagement with the forward gear or the reverse gear;
(l) A shift wedge adapted to move the clutch pawl actuator pin such that the shift clutch pawl engages the forward gear or the reverse gear;
(m) a shift actuator rod extending upwardly from the shift wedge above the waterline adapted to provide controlled positioning of the shift wedge;
(n) an input shaft housing adapted to enclose the vertical input shaft;
(o) an angled main housing mounted to the input shaft housing, at least partially below the waterline, adapted to enclose and cool a portion of the intermediate shaft and the output shaft;
(p) a forward housing mounted to the angled main housing, at least partially below the waterline, adapted to enclose and cool the forward ends of the intermediate shaft and the output shaft;
(q) a rear housing mounted to said angled main housing at least partially below said waterline, adapted to enclose and cool said rearward end of said intermediate shaft and said shift wedge;
(r) an output shaft housing mounted to said angled main housing below said waterline, corresponding to a downward and rearward acute angle of said output shaft, adapted to enclose and cool said rearward portion of said output shaft;
(s) a thrust redirection plate mounted at an acute angle on and above the output shaft housing, adapted to reflect and redirect forces from a propeller mounted to the propeller mount; and
(t) angled skegs mounted on and below the forward housing, angled main housing and output shaft housing adapted to prevent the vertical input outboard motor angled drive lower unit and mounted propeller from being affected by obstacles and shallow water bottom;
(ii) Mounting the vertical input outboard motor angle drive lower unit to an outboard motor engine having a vertical rotary power output;
(iii) Mounting the outboard motor engine and the vertical input outboard motor angle drive lower unit to a transom using a transom clamp steering bracket;
(iv) Shifting between a forward gear and a reverse gear using the shift actuator lever; and
(v) Operating the outboard motor engine mounted to the vertical input outboard motor angle drive lower unit for forward and reverse propulsion of the boat.
12. The vertical input outboard motor angle drive lower unit method of claim 11, wherein the vertical input outboard motor angle drive lower unit apparatus further comprises the output shaft being below the intermediate shaft and at an acute angle of 20 to 40 degrees to the intermediate shaft.
13. The vertical input outboard motor angle drive lower unit method of claim 11, wherein the vertical input outboard motor angle drive lower unit apparatus further comprises the output shaft being below the intermediate shaft and at an acute angle of 25 to 35 degrees to the intermediate shaft.
14. The vertical input outboard motor angle drive lower unit method of claim 11, wherein the vertical input outboard motor angle drive lower unit apparatus further comprises the output shaft being below the intermediate shaft and at an acute angle of 30 degrees to the intermediate shaft.
15. The vertical input outboard motor angle drive lower unit method of claim 11, wherein the input gear, the forward gear, and the reverse gear are bevel gears.
16. The vertical input outboard motor angle drive lower unit method of claim 11, wherein said input gear, said forward gear, and said reverse gear are spiral bevel gears.
17. The vertical input outboard motor angle drive lower unit method of claim 11, wherein said drive bevel gear and said driven bevel gear are helical bevel gears.
18. The vertical input outboard motor angle drive lower unit method of claim 11, wherein said thrust redirection plate further comprises a generally planar structure extending sufficiently forward and rearward and laterally to extend beyond the operational area of a propeller mounted to said propeller mount.
19. The vertical input outboard motor angle drive lower unit method of claim 11, wherein the thrust redirection sheet further comprises a substantially planar structure extending at least 12 inches in a forward-rearward dimension and at least 10 inches laterally.
20. The vertical input outboard motor angle drive lower unit method of claim 11, wherein the angled skeg extends downward at an angle greater than the angle of the output shaft.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/908,326 | 2020-06-22 | ||
| US16/908,326 US10858087B2 (en) | 2017-12-07 | 2020-06-22 | Vertical-input outboard-motor forward-reverse angled-drive lower unit |
| PCT/US2021/038304 WO2021262615A1 (en) | 2020-06-22 | 2021-06-21 | Vertical-input outboard-motor forward-reverse angled-drive lower unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115702104A true CN115702104A (en) | 2023-02-14 |
| CN115702104B CN115702104B (en) | 2024-10-29 |
Family
ID=
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2096457A (en) * | 1934-02-12 | 1937-10-19 | Outboard Motors Corp | Outboard motor |
| DE4028687A1 (en) * | 1990-09-10 | 1992-03-12 | Kusan Kristian | Water jet propulsion system for boats - combines all drive and control systems in single, removable housing |
| US5697820A (en) * | 1995-03-03 | 1997-12-16 | Sanshin Kogyo Kabushiki Kaisha | Outboard marine propulsion system |
| JPH11263294A (en) * | 1998-09-21 | 1999-09-28 | Sanshin Ind Co Ltd | Thrust receiving structure of ship propeller |
| CN106005341A (en) * | 2010-02-11 | 2016-10-12 | 塞文船舶有限公司 | Large outboard motor for marine vessel application and related methods of making and operating same |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2096457A (en) * | 1934-02-12 | 1937-10-19 | Outboard Motors Corp | Outboard motor |
| DE4028687A1 (en) * | 1990-09-10 | 1992-03-12 | Kusan Kristian | Water jet propulsion system for boats - combines all drive and control systems in single, removable housing |
| US5697820A (en) * | 1995-03-03 | 1997-12-16 | Sanshin Kogyo Kabushiki Kaisha | Outboard marine propulsion system |
| JPH11263294A (en) * | 1998-09-21 | 1999-09-28 | Sanshin Ind Co Ltd | Thrust receiving structure of ship propeller |
| CN106005341A (en) * | 2010-02-11 | 2016-10-12 | 塞文船舶有限公司 | Large outboard motor for marine vessel application and related methods of making and operating same |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2021296746A1 (en) | 2023-02-02 |
| CA3181903A1 (en) | 2021-12-30 |
| MX2022016432A (en) | 2023-01-30 |
| AU2021296746B2 (en) | 2023-06-15 |
| WO2021262615A1 (en) | 2021-12-30 |
| ZA202213176B (en) | 2023-09-27 |
| EP4153475A1 (en) | 2023-03-29 |
| CA3181903C (en) | 2023-07-18 |
| EP4153475A4 (en) | 2024-07-10 |
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