US3240453A - Marine propulsion device with energy absorbing means - Google Patents

Marine propulsion device with energy absorbing means Download PDF

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US3240453A
US3240453A US354860A US35486064A US3240453A US 3240453 A US3240453 A US 3240453A US 354860 A US354860 A US 354860A US 35486064 A US35486064 A US 35486064A US 3240453 A US3240453 A US 3240453A
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rack
tilt
teeth
pinion
shaft
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US354860A
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Kiekhaefer Elmer Carl
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Kiekhaefer Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/08—Means enabling movement of the position of the propulsion element, e.g. for trim, tilt or steering; Control of trim or tilt
    • B63H20/10—Means enabling trim or tilt, or lifting of the propulsion element when an obstruction is hit; Control of trim or tilt

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  • This invention relates to a marine propulsion device, and more particularly to a stern-mounted outboard drive for boats.
  • Such drives may include, for example, the well-known outboard motor as well as the more recently popular stern drive units connected to an inboard-mounted engine.
  • the present invention is directed to another form of clamping device and which is simple to construct and yet efficient and flexible in operation.
  • an arcuate rack or gear sector is secured to the swivel bracket of the device and engages a pinion mounted on the clamp bracket.
  • Vertical pivoting of the swivel bracket about the tilt pin causes the rack to drive the pinion.
  • a clutch connected to the pinion acts as an energy absorber to keep pivoting of the device under control.
  • the arrangement is such that the rotatable clutch parts rotate a substantial multiple of the rotation of the device about the tilt pin.
  • the construction of the rack is such that the clutch operates only during selected upward and Additionally, the gears are arranged to prevent transmission to the transom of the initial impact load.
  • FIGURE 1 is a side elevation of a transom-mounted outboard motor embodying the invention, with the transom in section;
  • FIG. 2 is a section taken on line 2-2 of FIGURE 1;
  • FIG. 3 is an enlarged fragmentary side elevation showing the outboard motor in normal running position
  • FIG. 4 is a view similar to FIG. 3 with the motor in partially tilted position.
  • FIG. 5 is a view similar to FIGS. 3 and 4 and with the motor in a higher position of tilt.
  • FIGURE 1 of the drawings the concept of the invention may be applied to an outboard .motor 1 which comprises a power head 2, a drive shaft housing 3 extending downwardly from the head, and a lower gear housing 4 which carries a propeller 5. Housings 3 and 4 enclose the usual connections for driving propeller 5 from head 2, and with the head comprise the power unit.
  • -Motor 1 is adapted to be secured to the transom 6 of a boat and rearwardly thereof.
  • housing 3 is pendantly and dirigibly supported from the transom by a swivel bracket 7 which supports the motor on a generally vertically extending swivel pin 8 whereby the motor is adapted for horizontal pivotal steering movement.
  • the upper portion of swivel bracket 7 extends forwardly through a portion often referred to as the tilt bracket 9 which in turn is pivotally mounted for vertical tilting upon a transverse horizontal tilt pin 10 carried by a pair of clamp brackets 11.
  • the arms of brackets 11 are mounted to transom 6 by suitable manually operable clamping screws 12.
  • Clamp brackets 11 are provided with a rearwardly projecting arm 13 having spaced openings therein adapted to receive a tilt adjustment pin 14 for selectively positioning motor 1 at a desired operating position with respect to the vertical.
  • propeller 5 may occasionally engage an underwater obstacle, such as a submerged log or the like.
  • an underwater obstacle such as a submerged log or the like.
  • the motor and swivel bracket 7 will tilt vertically about tilt pin 10.
  • means are provided to dampen or absorb the energy created by engagement of the motor with the obstacle.
  • an arcuate rack or gear sector 15 is secured to the lower portion of each side of swivel bracket 7, as by bolts 16, and extend forwardly and downwardly therefrom. In the normal operating position of the motor, the forward end portion of each gear sector 15 terminates closely adjacent tram-- som 6 (FIG. 3).
  • Sectors 15 are provided with a plurality of teeth 17 which are adapted to mesh with a plurality of corresponding teeth 18 on a corresponding pinion 19 which is coplanar with the sector.
  • Pinion 19 is keyed or otherwise fixed to the end of a vertically and horizontally fixed rotatable clutch shaft 20 disposed ad jacent gear sector 15.
  • the axis of shaft 20 is parallel to and spaced downwardly and rearwardly from the axis of tilt pin 10.
  • the ends of shaft 20 to which pinions 19 are affixed extend outside the arms 13 of clamp brackets 11, and the shaft extends between the arms and is suitably journalled therein.
  • shaft 20 carries a plurality of axially spaced clutch plates 21 between the clamp bracket arms, which plates in turn constantly engage a plurality of corresponding clutch rings 22 carried on the circumferential inner wall of a cylindrical clutch housing 23 secured to one of the clamp bracket arms.
  • Plates 21 are biased into engagement with rings 22 by a suitable spring 24 extending between one clamp bracket arm 13 and the closest adjacent plate.
  • Spring 24 should be of a size and strength commensurate with the inventive concept, and different size and strength springs may be utilized depending upon the weight of the outboard motor. It may be possible to relocate the clutch mechanism relative to clamp brackets 11 without departing from the spirit of the invention.
  • FIGS. 3-5 illustrate the action of the structure of the invention when a motor 1 strikes a submerged object.
  • FIG. 3 shows the device just a moment prior to impact with the object.
  • teeth 18 of pinions 19 are not engaged with gear sector teeth 17 due to the fact that pinions 19 are adjacent portions of sectors 15 having an untoothed area wherein an elongated bottom land 25 extends inwardly or rearwardly from the innermost tooth.
  • Land 25 is of approximately the same depth as the bottom lands between adjacent teeth 17.
  • the return tilt is approximately the reverse of upward tilt. Initial downward tilting is free until the end teeth of sectors 15 engage pinions 19. Further downward tilting is controlled in accordance with the clutch action, and final downward return is free. The amount of free final tilt will not produce sufiicientforce to cause damage to adjustment pin 14. This can be controlled by controlling the length of bottom lands 25.
  • the amount of resistance afforded by the clutch mechanism must be sufiicient to absorb substantial kinetic energy, but must below enoughto permit return of the motor to running position without tending to hold the tilt pin 10.
  • the maximum pinion radius is one inch and the'distance between axes is :twelve inches: for every 30 of motor tilt, shaft 20 and its clutch plates 21 will rotate 360.
  • the invention provides a novel structural concept for con-trolling the destructive forces released when an outboard mounted marine propulsion unit strikes a sub- I merged object. These forces are absorbed and dissipated, as by heat in the clutch, during the intermediate portion of tilt action.
  • high absorbtive efiiciency is possible with a clutch of relatively small size, due to the .large angle of clutch rotation per degree-ofmotor tilt.
  • said rack includes an elongated bottom land extending rearwardly from one of the rack teeth and of approximately the same depth as the bottom lands between adjacent rack teeth,
  • said rack is of such a length that the forward end thereof runs off said pinion adjacent the upper tilt position of the device to permit substantially free upward tilting thereafter.
  • said rack is of such a length that the forward end thereof runs off said pinion adjacent the upper tilt position of the device to permit substantially free upward tilting thereafter.
  • said rack including an elongated bottom land extending rearwardly from one'of the rack teeth and of approximately the same depth as the bottom lands between adjacent rack teeth,
  • said pinion being positioned adjacent said elongated land and out of engagement with the rack teeth when said device is in normal operating position to permit substantially free and uncontrolled tilting of said device at initial impact with a submerged object, followed by coengagement of the rack and pinion teeth upon further upward tilting to actuate said clutch means
  • said rack including an elongated bottom land extending rearwardly from one of said rack teeth and of approximately the same depth as the bottom lands between adjacent rack teeth,
  • said pinion being positioned adjacent said land and out of engagement with the rack teeth when said device is in normal operating position to permit substantially free and uncontrolled tilting of said device at initial impact with a submerged object, followed by coengagement of the rack and pinion teeth upon further upward tilting to actuate said clutch means

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

Description

March 15, 1966 E. c. KIEKHAEFER 3,240,453
MARINE PROPULSION DEVICE WITH ENERGY ABSORBING MEANS Filed March 26, 1964 2 Sheets-Sheet l i g i; W 2 2 r r E INVENTOR.
ELMER C. KIEKHAEFER Affomvsvs March 15, 1966 E. c. KIEKHAEFER 3,
MARINE PROPULSION DEVICE WITH ENERGY ABSORBING MEANS Filed March 26, 1964 2 Sheets-Sheet 2 INVENTOR.
ELMER C. KIEKHAEFER vndrus Starkg Arromvevs 'downward portions of tilt of the device.
United States Patent Office 3,240,453 Patented Mar. 15, 1966 3,240,453 MARINE PROPULSION DEVICE WITH ENERGY ABSORBING MEANS Elmer Carl Kiekhaefer, Winter Haven, Fla., assignor to Kiekhaefer Corporation, Fond du Lac, Wis.,ya corporation of Delaware Filed Mar. 26, 1964, Ser. No. 354,860 8 Claims. (Cl. 248-4) This invention relates to a marine propulsion device, and more particularly to a stern-mounted outboard drive for boats.
Such drives may include, for example, the well-known outboard motor as well as the more recently popular stern drive units connected to an inboard-mounted engine.
In all such devices, striking of an underwater object by the propeller or lower housing puts severe strain on the device itself as well as on the transom of the boat to which the device is secured rearwardly thereof. If the impact is severe enough, and if the device is permitted to pivot freely about its horizontal tilt axis, undesirable slamming of the device may occur at the top and bottom ends of pivot travel.
Various means have been developed for restricting the freedom to tilt. One such means is disclosed in the present inventors US. Patent No. 2,953,335, entitled Outboard Propulsion Units for Boats and assigned to a common assignee.
The present invention is directed to another form of clamping device and which is simple to construct and yet efficient and flexible in operation. Generally, in accordance with the invention, an arcuate rack or gear sector is secured to the swivel bracket of the device and engages a pinion mounted on the clamp bracket. Vertical pivoting of the swivel bracket about the tilt pin causes the rack to drive the pinion. A clutch connected to the pinion acts as an energy absorber to keep pivoting of the device under control.
Further in accordance with the invention, the arrangement is such that the rotatable clutch parts rotate a substantial multiple of the rotation of the device about the tilt pin. In addition, the construction of the rack is such that the clutch operates only during selected upward and Additionally, the gears are arranged to prevent transmission to the transom of the initial impact load.
The accompanying drawings illustrate the best mode presently contemplated by the inventor for carrying out the invention.
In the drawings:
FIGURE 1 is a side elevation of a transom-mounted outboard motor embodying the invention, with the transom in section;
FIG. 2 is a section taken on line 2-2 of FIGURE 1;
FIG. 3 is an enlarged fragmentary side elevation showing the outboard motor in normal running position;
FIG. 4 is a view similar to FIG. 3 with the motor in partially tilted position; and
FIG. 5 is a view similar to FIGS. 3 and 4 and with the motor in a higher position of tilt.
As best shown in FIGURE 1 of the drawings, the concept of the invention may be applied to an outboard .motor 1 which comprises a power head 2, a drive shaft housing 3 extending downwardly from the head, and a lower gear housing 4 which carries a propeller 5. Housings 3 and 4 enclose the usual connections for driving propeller 5 from head 2, and with the head comprise the power unit.
-Motor 1 is adapted to be secured to the transom 6 of a boat and rearwardly thereof. For this purpose, housing 3 is pendantly and dirigibly supported from the transom by a swivel bracket 7 which supports the motor on a generally vertically extending swivel pin 8 whereby the motor is adapted for horizontal pivotal steering movement. The upper portion of swivel bracket 7 extends forwardly through a portion often referred to as the tilt bracket 9 which in turn is pivotally mounted for vertical tilting upon a transverse horizontal tilt pin 10 carried by a pair of clamp brackets 11. The arms of brackets 11 are mounted to transom 6 by suitable manually operable clamping screws 12.
Clamp brackets 11 are provided with a rearwardly projecting arm 13 having spaced openings therein adapted to receive a tilt adjustment pin 14 for selectively positioning motor 1 at a desired operating position with respect to the vertical.
During operation of an outboard motor-powered boat, propeller 5 may occasionally engage an underwater obstacle, such as a submerged log or the like. As the boat continues forwardly, the motor and swivel bracket 7 will tilt vertically about tilt pin 10. In view of todays increased boating speeds, it is advisable to control the impact and tilt forces to reduce the hazard to both motor and boat. For this purpose, means are provided to dampen or absorb the energy created by engagement of the motor with the obstacle.
In accordance with the invention, an arcuate rack or gear sector 15 is secured to the lower portion of each side of swivel bracket 7, as by bolts 16, and extend forwardly and downwardly therefrom. In the normal operating position of the motor, the forward end portion of each gear sector 15 terminates closely adjacent tram-- som 6 (FIG. 3). Sectors 15 are provided with a plurality of teeth 17 which are adapted to mesh with a plurality of corresponding teeth 18 on a corresponding pinion 19 which is coplanar with the sector. Pinion 19 is keyed or otherwise fixed to the end of a vertically and horizontally fixed rotatable clutch shaft 20 disposed ad jacent gear sector 15. The axis of shaft 20 is parallel to and spaced downwardly and rearwardly from the axis of tilt pin 10. The ends of shaft 20 to which pinions 19 are affixed extend outside the arms 13 of clamp brackets 11, and the shaft extends between the arms and is suitably journalled therein.
As shown in FIG. 2, shaft 20 carries a plurality of axially spaced clutch plates 21 between the clamp bracket arms, which plates in turn constantly engage a plurality of corresponding clutch rings 22 carried on the circumferential inner wall of a cylindrical clutch housing 23 secured to one of the clamp bracket arms. Plates 21 are biased into engagement with rings 22 by a suitable spring 24 extending between one clamp bracket arm 13 and the closest adjacent plate. Spring 24 should be of a size and strength commensurate with the inventive concept, and different size and strength springs may be utilized depending upon the weight of the outboard motor. It may be possible to relocate the clutch mechanism relative to clamp brackets 11 without departing from the spirit of the invention.
FIGS. 3-5 illustrate the action of the structure of the invention when a motor 1 strikes a submerged object.
FIG. 3 shows the device just a moment prior to impact with the object. In this position, teeth 18 of pinions 19 are not engaged with gear sector teeth 17 due to the fact that pinions 19 are adjacent portions of sectors 15 having an untoothed area wherein an elongated bottom land 25 extends inwardly or rearwardly from the innermost tooth. Land 25 is of approximately the same depth as the bottom lands between adjacent teeth 17.
At the moment of impact, very large forces are applied to motor 1 which cause it to tilt upwardly on tilt pin 10. Land 25 permits substantially free upward initial tilt to thereby prevent transmission to the transom of the high initial impact force. Once this force is substantially dissipated and upward tilting continues, gear sector teeth 17 engage pinion teeth 18"and pinions 19 are then rotated to actuate the clutch .to absorb the kinetic energy created. See FIG. 4.
Upon further upward tilting, and once the shock forces are substantially under control, the resistance created by the clutch is no longer needed. Thus, as shown in FIG. 5, the outer or forward end of gear sectors 15 run off pinions 19 to permit substantially free tilting at the uppermost position.
The return tilt is approximately the reverse of upward tilt. Initial downward tilting is free until the end teeth of sectors 15 engage pinions 19. Further downward tilting is controlled in accordance with the clutch action, and final downward return is free. The amount of free final tilt will not produce sufiicientforce to cause damage to adjustment pin 14. This can be controlled by controlling the length of bottom lands 25.
The amount of resistance afforded by the clutch mechanism must be sufiicient to absorb substantial kinetic energy, but must below enoughto permit return of the motor to running position without tending to hold the tilt pin 10. Thus, if the maximum pinion radius is one inch and the'distance between axes is :twelve inches: for every 30 of motor tilt, shaft 20 and its clutch plates 21 will rotate 360. v The invention provides a novel structural concept for con-trolling the destructive forces released when an outboard mounted marine propulsion unit strikes a sub- I merged object. These forces are absorbed and dissipated, as by heat in the clutch, during the intermediate portion of tilt action. In addition, high absorbtive efiiciency is possible with a clutch of relatively small size, due to the .large angle of clutch rotation per degree-ofmotor tilt.
Various modes of carrying out the invention are contemplated'asbeing within the scope of the following claims particularly pointing out and distinctly claiming the subject matter which is regarded as the invention.
1 claim:
1. In combination:
(a') an outboard propulsion device for boats,
(b) means for mounting said device rearwardly of the transom of a boat,
(c) means pivotally mounting said device on said mounting means and on a horizontal tilt axis for tilt movement rearwardly and upwardly from a normal operative position,
(d) an arcuate teeth-carrying rack secured to said device and extending downwardly and forwardly therefrom,
(e) a pinion disposed co-planar with said rack and having teeth adapted to be engaged by .said rack teeth,
(f) a rotatable shaft disposed adjacent said rack and fixed against tilting with said device and having an axis spaced from and parallel to said tilt axis,
(g) said pinion being disposed for rotation with said shaft, a l
(h) and clutch means connected to said shaft for absorbing a substantial portion of kinetic energy,
(i) .the construction being such that striking of an underwater object by said propulsion device causes said device to tilt upwardly about said tilt axis so 'that said rack teeth engage. said pinion teeth to u r'otate said shaft and actuate said clutch means. 2. The combination ofclaim 1 in which: the distance between said tilt axis and said shaftaxis is substantially The amount of the multiple 4. more than the maximum radius of said pinion so that every angle of tilt of said device is accompanied by a substantially greater angle of rotation of said clutch shaft.
3. The combination of claim 1 in which:
(a) said rack includes an elongated bottom land extending rearwardly from one of the rack teeth and of approximately the same depth as the bottom lands between adjacent rack teeth,
(b) said pinion being positioned adjacent said elongated land and out of engagement with the rack teeth when said device is in normal operating position to permit substantially free and uncontrolled tilting of said device at initial impact with a submerged object, followed by coengagement of the rack and pinion teeth upon further upward tilting to actuate said clutch means.
4. The combination of claim 1 wherein: said rack is of such a length that the forward end thereof runs off said pinion adjacent the upper tilt position of the device to permit substantially free upward tilting thereafter.
5. The combination of claim 3 wherein: said rack is of such a length that the forward end thereof runs off said pinion adjacent the upper tilt position of the device to permit substantially free upward tilting thereafter.
6. The combination of claim 1 in which: the resistance to tilting offered by said clutch means is insuificient to prevent downward return movement of said device.
7. In combination:
(a) an outboard propulsion device for boats,
(b) means for mounting said device rearwardly of the transom of a boat, (c) means pivotally mounting said device on said mounting means and on a horizontal tilt axis for tilt movement rearwardly and upwardly from a normal operative position, v (d) an arcuate teeth-carrying rack secured to said device and extending downwardly and. forwardly therefrom,
(e) a pinion disposed co-planar with said rack and having teeth adapted to be engaged by .said rack teeth,
(f) a rotatable shaft disposed adjacent said rack and fixed against tilting with said device and having an axis spaced from and parallel to said tilt axis,
(g) said pinion being disposed for rotation with said shaft,
(h) and constantly engaged clutch means connected to said shaft for absorbing a substantial portion of kinetic energy,
(i) the construction being such .that striking of an underwater object by said propulsion device causes said device to tilt upwardly about said tilt axis so that said rack teeth engage said pinion teeth to rotate said shaft and actuate said clutch means,
(j) the distance between said tilt axis and said shaft axis being substantially more than the maximum radius of said pinion so that every angle of tilt of said device is accompanied by a substantially greater angle of rotation of said clutch shaft,
(k) said rack including an elongated bottom land extending rearwardly from one'of the rack teeth and of approximately the same depth as the bottom lands between adjacent rack teeth,
(1) said pinion being positioned adjacent said elongated land and out of engagement with the rack teeth when said device is in normal operating position to permit substantially free and uncontrolled tilting of said device at initial impact with a submerged object, followed by coengagement of the rack and pinion teeth upon further upward tilting to actuate said clutch means,
(m) said rack being of such a length that the forward end thereof runs off said pinion adjacent the upper tilt position to permit substantially free upward tilting thereafter.
8. 'In combination:
(a) an outboard propulsion device for boats,
(b) means for mounting said device rearwardly of the transom of a boat,
(c) means pivotally mounting said device on said mounting means and on a horizontal tilt axis for tilt movement rearwardly and upwardly from a normal operative position,
(d) an arcuate teeth-carrying rack secured to said device and extending downwardly and forwardly therefrom,
(e) a pinion disposed co-planar with said rack and having teeth adapted to be engaged by said rack teeth,
(f) a rotatable shaft disposed adjacent said rack and fixed against tilting with said device and having an axis spaced from and parallel to said tilt axis,
(g) said pinion being disposed for rotation with said shaft,
(h) and constantly engaged clutch means connected to said shaft for absorbing a substantial portion of kinetic energy.
(i) the construction being such that striking of an underwater object by said propulsion device causes said device to tilt upwardly about said tilt axis so that said rack teeth engage said pinion teeth to rotate said shaft and actuate said clutch means,
(j) the distance between said tilt axis and said shaft axis being substantially more than the maximum radius of said pinion so that every angle of tilt of said device is accompanied by a substantially greater angle of rotation of said clutch shaft,
(k) said rack including an elongated bottom land extending rearwardly from one of said rack teeth and of approximately the same depth as the bottom lands between adjacent rack teeth,
(1) said pinion being positioned adjacent said land and out of engagement with the rack teeth when said device is in normal operating position to permit substantially free and uncontrolled tilting of said device at initial impact with a submerged object, followed by coengagement of the rack and pinion teeth upon further upward tilting to actuate said clutch means,
(m) said rack being of such a length that the forward end thereof runs 01f said pinion adjacent the upper tilt position to permit substantially free upward tiltin g thereafter,
(n) the resistance to tilting offered by said clutch means being insufiicient to prevent downward return movement of said device.
References Cited by the Examiner UNITED STATES PATENTS CLAUDE A. LE ROY, Primary Examiner.

Claims (1)

1. IN COMBINATION: (A) AN OUTBOARD PROPULSION DEVICE FOR BOATS, (B) MEANS FOR MOUNTING SAID DEVICE REARWARDLY OF THE TRANSOM OF A BOAT, (C) MEANS PIVOTALLY MOUNTED SAID DEVICE ON SAID MOUNTING MEANS AND ON A HORIZONTAL TILT AXIS FOR TILT MOVEMENT REARWARDLY AND UPWARDLY FROM A NORMAL OPERATIVE POSITION, (D) AN ARCUATE TEETH-CARRYING RACK SECURED TO SAID DEVICE AND EXTENDING DOWNWARDLY AND FORWARDLY THEREFROM, (E) PINION DISPOSED CO-PLANAR WITH SAID RACK AND HAVING TEETH ADAPTED TO BE ENGAGED BY SAID RACK TEETH, (F) A ROTATABLE SHAFT DISPOSED ADJACENT SAID RACK AND FIXED AGAINST TILTING WITH SAID DEVICE AND HAVING AN AXIS SPACED FROM AND PARALLEL TO SAID TILT AXIS, (G) SAID PINION BEING DISPOSED FOR ROTATION WITH SAID SHAFT, (H) AND CLUTCH MEANS CONNECTED TO SAID SHAFT FOR ABSORBING A SUBSTANTIAL PORTION OF KINETIC ENERGY, (I) THE CONSTRUCTION BEING SUCH THAT STRIKING OF AN UNDERWATER OBJECT BY SAID PROPULSION DEVICE CAUSES SAID DEVICE TO TILT UPWARDLY ABOUT SAID TILT AXIS SO THAT SAID RACK TEETH ENGAGE SAID PINION TEETH TO ROTATE SAID SHAFT AND ACTUATE SAID CLUTCH MEANS.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430604A (en) * 1967-01-24 1969-03-04 Chrysler Corp Inboard-outboard drive
US3469377A (en) * 1966-06-03 1969-09-30 Kelco Co Apparatus for cutting marine plants
US4432527A (en) * 1982-03-05 1984-02-21 Sample Frank C Trolling motor bracket
US5405274A (en) * 1993-06-04 1995-04-11 Brunswick Corporation Trolling motor mount clutch slip-joint
US6053471A (en) * 1997-07-29 2000-04-25 Brown; Edward D. Convertible, tilt-bracket assembly for mounting trolling motors

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878773A (en) * 1954-09-01 1959-03-24 John Whitehead Engineering Wil Outboard propeller mechanisms
US2961207A (en) * 1958-01-29 1960-11-22 Outboard Marine Corp Tilt control device for an outboard motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878773A (en) * 1954-09-01 1959-03-24 John Whitehead Engineering Wil Outboard propeller mechanisms
US2961207A (en) * 1958-01-29 1960-11-22 Outboard Marine Corp Tilt control device for an outboard motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469377A (en) * 1966-06-03 1969-09-30 Kelco Co Apparatus for cutting marine plants
US3430604A (en) * 1967-01-24 1969-03-04 Chrysler Corp Inboard-outboard drive
US4432527A (en) * 1982-03-05 1984-02-21 Sample Frank C Trolling motor bracket
US5405274A (en) * 1993-06-04 1995-04-11 Brunswick Corporation Trolling motor mount clutch slip-joint
US6053471A (en) * 1997-07-29 2000-04-25 Brown; Edward D. Convertible, tilt-bracket assembly for mounting trolling motors

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