US3863592A - Combined damping and lift means for marine propulsion device - Google Patents

Combined damping and lift means for marine propulsion device Download PDF

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Publication number
US3863592A
US3863592A US339587A US33958773A US3863592A US 3863592 A US3863592 A US 3863592A US 339587 A US339587 A US 339587A US 33958773 A US33958773 A US 33958773A US 3863592 A US3863592 A US 3863592A
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United States
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piston
propulsion
cylinder
assembly
propulsion unit
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US339587A
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English (en)
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Gaylord M Borst
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Outboard Marine Corp
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Outboard Marine Corp
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Priority to US339587A priority Critical patent/US3863592A/en
Priority to CA190,413A priority patent/CA1028576A/en
Priority to JP49025804A priority patent/JPS595480B2/ja
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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

Definitions

  • ABSTRACT Disclosed herein is a marine propulsion device including a hydropneumatic or gas spring type shock absorber which is connected between a support bracket and a swivel bracket carrying a propulsion unit to damp angular movement of the propulsion unit during tilting, such as during a sudden upward tilting movement of the propulsion unit caused by striking an underwater obstruction while the boat is traveling at a high forward speed.
  • the gas pressure of the gas spring unit is at a level whereby the tilting force applied by the gas spring unit to the propul sion unit is slightly less than that required to tilt the propulsion unit from an operating position to a raised elevated position, thereby substantially reducing the effort to manually tilt the propulsion unit to a raised position.
  • the gas pressure of the gas spring unit is at a level whereby the tilting force applied by the gas spring unit to the propulsion unit is greater than that required to tilt the propulsion unit from an operating position to a raised or elevated position so that, upon releasing the locking means releasably locking the propulsion unit in an operating position, the propulsion unit is automatically tilted to a raised or elevated position by the gas spring unit.
  • This invention relates generally to marine propulsion devices, such as outboard motors. More particularly, this invention relates to devices for damping shock forces imparted to the propulsion unit upon striking an underwater obstruction.
  • Damping means such as hydraulic shock absorbers
  • Some outboard motors, particularly larger ones, are frequently equipped with power means for selectively tilting the propulsion unit to a raised or elevated position for storage or trailering.
  • Kiekhaefer US. Pat: No. 3,003,724, issued Aug. I0, I96] suggests using a hydraulic shock absorber interposed the propulsion unit and the support bracket to serve both as a damping means and a power lift means.
  • Kiekhaefer patent requires a separate source of hydraulic pressure connected to the shock absorber and a control assembly, thereby adding to the cost and complexity of the outboard motor.
  • the invention provides a marine propulsion device including a damping means which is connected between a support bracket and a propulsion assembly including a swivel bracket carrying a propulsion unit,
  • damping means is capable of serving the dual function of damping angular movement of the propulsion unit during a sudden tilting movement and of lifting or assisting in lifting the propulsion unit from an operative position to a raised or elevated position.
  • such damping means comprises a fluid pressure damping device including a cylinder which is partially filled with an incompressible liquid, with the remainder of the cylinder being filled with a gas under a predetermined pressure greater than atmospheric, a reciprocative piston inside the cylinder, a piston rod connected to the piston and extending from one end ofthe cylinder, means for pivotally connecting the damping device between the support bracket and the propulsion assembly so that, in response to upward and downward tilting movement of the propulsion unit, the piston rod respectively extends and retracts, and flow control means in the cylinder for controlling the flow of liquid between opposite sides of the piston during reciprocation of the piston to thereby damp the angular movement of the propulsion unit during tilting.
  • the gas is pressurized to level whereby the piston-extending force applied to the piston by the liquid and gas, and thus the tilting force applied to the propulsion unit, is slightly less than the tilting force required to tilt the propulsion unit from an operating position to a raised or elevated position.
  • the damping means effectively and substantially reduces the effort required to manually tilt the propulsion unit from an operating to a raised or elevated position.
  • the gas is pressurized to a level whereby the piston-extending force applied to the piston by the liquid and the gas is greater than the tilting force required to tilt the propulsion unit to a raised or elevated position.
  • the damping means after release of the locking means which releasably locks the propulsion unit in an operating position, automatically tilts the propulsion unit to a raised or elevated position.
  • An object of this invention is to provide a marine propulsion device including a simple, inexpensive means which is capable both of damping the shock forces imparted to the propulsion unit upon. impacting an underwater obstruction and of reducing the force required to manually tilt the propulsion unit from an operating position to a raised or elevated position.
  • Another object of this invention is to provide a marine propulsion device including a simple, inexpensive means which is capable of damping the shock forces imparted to the propulsion unit upon impacting underwater obstruction and of automatically raising the propulsion unit to a raised or elevated position.
  • FIG. I is a fragmentary, elevational view of an outboard motor embodying the invention.
  • FIG. 2 is an enlarged, sectional view of a gas spring unit adapted to serve a dual function in accordance with the invention.
  • the outboard motor 10 has a propulsion assembly 11 in cluding a propulsion unit 12 and a swivel bracket 14.
  • the propulsion unit I2 includes an engine (not shown) enclosed within a cowl I6, a drive shaft (not shown) which is disposed inside a drive shaft housing 18 and which drivingly connects the engine and a propeller 20 via a propeller shaft 22.
  • the propulsion unit 12 is connected to the swivel bracket 14 for horizontal swinging movement about a generally vertical king pin 24 for steering control of the propulsion unit.
  • the propulsion assembly 11 is fastened to the transom 26 or other supporting member of a boat hull by a support or transom bracket 23.
  • the swivel bracket 14 is connected to the transom bracket 28 for common swinging movement in a vertical plane or tilting of the propulsion unit 12 and the swivel bracket 14 about a transverse horizontal axis provided by a tilt pin 30.
  • the transom bracket 28 includes a series of apertures 32 adapted to selectively receive a trim adjustment or thrust pin 34 which is normally engaged by the propulsion unit 12 for positioning the propulsion unit at a desird operating position with respect to the vertical.
  • the outboard motor also includes a suitable reverse lock 38 which, when engaged, prevents upward swinging or tilting of the propulsion unit 12 during normal operation to thereby facilitate operating the propulsion unit in reverse.
  • the reverse lock is arranged in the usual manner with a releasable feature so that, in the event the impact force of the propulsion unit 12 striking an undewater obstruction exceeds a predetermined level while traveling forward, the reverse lock automatically releases to permit upward swinging or tilting of the propulsion unit.
  • the reverse lock also includes a manual release so as to permit manual tilting of the propulsion unit 12 to a raised or elevated position.
  • the reverse lock can be arranged in any suitable manner, so a detailed description and illustration of the same is deemed unnecessary for a complete understanding of the invention.
  • the reverse lock can be arranged in the manner described in Hulsebus US. Pat. No. Re 25,048 issued Oct. 3, 1961, which patent is incorporated herein by reference.
  • the propulsion assembly 11 there is connected between the propulsion assembly 11 and the transom bracket 28 a means which is capable of serving the dual function of damping the angular movement of the propulsion unit during tilting and of either assisting in the manual tilting of the propulsion unit to a raised position or automatically tilting the propulsion unit to a raised position upon releasing the reverse lock.
  • such means comprises one or more hydropneumatic shock absorbers or gas spring units 40.
  • the gas spring unit 40 includes a pressure cylinder 42 closed at the lower end by a closure member 44 and a mounting lug 46 projecting from the closure member 44 for pivotally connecting the lower end of the gas spring unit 40 to the transom bracket 28.
  • a piston 50 is slidably disposed within the cylinder 42 and is secured to one end of a piston rod 52 which extends coaxially of the cylinder 42.
  • the piston rod 52 extends slidably through an opening 54 provided in an upper closure member 56 which closes the upper end of the cylinder 42.
  • Suitable packing or sealing means 58 is provided at the opening 54 and surrounds the piston rod 52 to insure a fluid tight seal between the piston rod 52 and the upper closure member 56.
  • a mounting lug 62 Attached to the outer end of the piston rod 52 for pivotally connecting the upper end of the gas spring unit 40 to the swivel bracket 14 is a mounting lug 62.
  • the gas spring unit 40 is connected between the swivel bracket 14 and the transom bracket 28 so that the movement arm between the center of the mounting lug 62 and pivot axis of the tilt pin remains substantially constant as the propulsion unit 12 is moved through a tilt arc.
  • Partially filling the cylinder 42 is a predetermined quantity of a substantially incompressible liquid 64, such as oil or a hydraulic fluid.
  • the liquid 64 is pressurized by a suitable inert gas 66, such as nitrogen or air, which is initially confined in the space above the upper surface of the liquid 64 and is under a predetermined pressure above atmospheric.
  • Thegas 66 usually becomes at least partially dispersed within the liquid after one or more reciprocative cycles of the piston 50.
  • means are provided in the cylinder 42 to permit a controlled flow of the liquid 64 from one side to the other side of the piston 50. While various arrangements can be used, in the construction illustrated, such flow control means comprises at least one orifice 68 extending axially through the piston 50.
  • the piston rod 52 of the gas spring unit 40 extends and retracts with respective upward and downward swinging or tilting movement of the propulsion unit 12 about the tilt pin 30 to damp the angular movement of the propulsion unit and thereby substantially reduce the severity of the impacts at the top and bottom of the propulsion unit swing.
  • the speed of travel of the piston 50 and, thus the amount of damping provided by the gas spring unit 40 depends upon the flow rate of the liquid through the flow control orifice 68.
  • such means comprises at least one relief valve 70 including a by-pass valve orifice 72 which extends axially through the piston 50 and which has a flow area substantially greater than the flow control orifice 68, a shoulder 74 within the by-pass orifice 72 forming a seat for a ball valve 76, and a relief spring 78 urging the ball valve 74 against the shoulder 74.
  • the relief valve 70 opens to permit the liquid to flow from the top side to the bottom side of the piston 50 when the differential pressure across the piston 50 exceeds a predetermined level corresponding to an abnormally high shock load imparted to the propulsion unit 12 causing the piston rod 52 to extend.
  • the areas of the piston 50 and the piston rod 52, the volume of the liquid 64, and the pressure and volume of the gas 66 are balanced so that the net pressure force acting on the piston 50 to extend the piston rod 52 is closely matched to, but is less than, the force required to counterbalance the weight of the propulsion assembly 11 as it is tilted upwardly about the tilt pin 30.
  • the force required to counterbalance the weight of the propulsion assembly 11 gradually decreases because of a reduction of the horizontal distance between the transverse horizontal pivot axis provided by the tilt pin 30 and the center of gravity of the propulsion unit.
  • the tilt assist force provided by the gas spring unit 40 remains below that required to counterbalance the weight of the propulsion assembly 11 during the entire tilt arc.
  • the above-mentioned variables are balanced so that the difference between the tilt assist force provided by the gas spring unit 40 and the force required to counterbalance the propulsion assembly 11 remains relatively constant throughout the entire tilt are.
  • the force required at the location of the gas spring unit attachment to the swivel bracket decreases substantially from about 700 lbs. to about 300 lbs.
  • a gas spring unit having a piston rod with a cross-sectional area of 0.44 square inches and a 4 inch maximum stroke and 0.88 cubic inches ofair (initial volume before pressurization and with the piston bottomed) at a pressure of 1,360 psi. will provide a tilt assisting force at the location of the swivel bracket attachment which decreases substantially linearly from about 600 lbs. to about 240 lbs. through the same tilt arc.
  • the amount of force required to tilt the propulsion unit is reduced by more than 50 percent. If desired the tilt assisting force provided by the gas spring unit can be more closely matched with the force required to tilt the propulsion unit.
  • the propulsion unit 12 In operation, when the propulsion unit strikes an underwater obstruction while the boat is traveling at a high forward speed, the propulsion unit 12, after the reverse lock has released, tilts upwardly (i.e., tilts counterclockwise as viewed in H6. 1). This movement of the propulsion unit 12 extends the piston rod 52 causing the piston 50 to be displaced upwardly. The piston 50 initially travels at a relatively high speed until the gas 66 is compressed and then moves more slowly through the liquid 64, as the liquid is forced through flow control orifice 68, to damp the angular movement of the tilting propulsionunit 12.
  • the propulsion unit 12 is permitted to initially tilt upwardly at a high rate upon striking an underwater obstruction so as to quickly clear the obstruction and thereby minimize damage and, yet the angular movement of the propul sion unit is damped to minimize the shock load at the top of the swing and thereby prevent damage to the outboard motor and/or the boat transom.
  • the propulsion unit 12 After clearing the obstruction, the propulsion unit 12 is returned to an operating position by gravity. This re turn movement of the propulsion unit 12 retracts the piston rod 52 causing the piston 50 to be displaced downwardly and slowly through the liquid 64 as the liquid is forced through the flow control orifice 68.
  • the areas of the piston 50 and the piston rod 52, the volume of the liquid 64, and the pressure and volume of the gas 66 are balanced so that the net pressure force acting on the piston 50 to extend the piston rod 52 (i.e., the tilting force provided by the gas spring unit 40) is greater than the force required to counterbalance the weight of the propulsion unit 12 about the tilt pin 30, but less than that required to release the reverse lock.
  • the gas spring unit 40 after the reverse lock is manually or Otherwise released, automatically tilts the propulsion unit 12 to a raised, non-operating position.
  • the propulsion unit 12 is returned to an operating position by manually pushing downwardly on the propulsion unit to overcome the tilting force provided by the gas spring unit 40 or by a separate lift means adapted to tilt the propulsion unit downwardly.
  • the tilting force provided by the gas spring unit 40 is preferably adjusted to a level relatively close to the force required to counterbalance the weight of the propulsion unit, particularly when a manual return is used.
  • a marine propulsion device comprising a support bracket adapted to be attached to a boat hull, a propulsion assembly including a swivel bracket and a propulsion unit carried by said swivel bracket, means connecting said propulsion assembly and said support bracket on a horizontal transverse axis for tilting movement of said propulsion assembly in a vertical plane between an operating position and a raised, nonoperating position, and cylinder-piston means for facilitating manual tilting movement of said propulsion assembly upwardly about said axis when said support bracket is attached to a boat hull and for absorbing shock in the event said propulsion assembly strikes an underwater obstacle, said cylinder-piston means comprising a cylinder including a first end and a second end, means for pivotally connecting said first end of said cylinder to one of said support bracket and said propulsion assembly, a piston located in said cylinder for reciprocative movement therein between a position adjacent said first cylinder end when said propulsion assembly is in the operating position and a position adjacent said second cylinder end when said propulsion assembly
  • a marine propulsion device according to claim 1 wherein said fluid flow means comprises an aperture extending axially through said piston.
  • a marine propulsion device according to claim 1 wherein the pressure of said gas is at a level whereby the force applied on said piston by said liquid and said gas and acting to extend said piston rod is less than the I tilting force required to tilt said propulsion unit from said operating position to said raised non-operating position, thereby reducing the force required to tilt said propulsion unit from said operating position to said raised position.
  • a marine propulsion device including locking means acting between said swivel bracket and said support bracket for releasably locking said propulsion unit in said operating position, and wherein the pressure of said gas is at a level whereby the force applied on said piston by said liquid and said gas and acting on said piston to extend said piston rod is greater than the tilting force required to tilt said propulsion unit from said operating position to said raised non-operating position, whereby, when said locking means is released, said piston rod extends to thereby tilt said propulsion unit towards said raised non-operating position.
  • a marine propulsion device includes one side in opposing relation to said first end of said cylinder and a second side in opposing relation to said second end of said cylinder and further including by-pass flow means in said cylinder for selectively permitting fluid flow from said second side to said first side of said piston in response to extension of said cylinder piston assembly when the differential pressure across said piston exceeds predetermined level in response to a sudden upward tilting movement of said propulsion unit and for preventing fluid flow from said first side to said second side of said piston in response to contraction of said cylinder piston assembly.
  • a marine propulsion device according to claim 5 wherein said by-pass flow means comprises a pressure relief valve means in said piston.
  • a marine propulsion device in accordance with claim 1 wherein said piston has a first side in facing relation to said first cylinder end and a second side in facing relation to said second cylinder end and said cylinder-piston assembly further includes passage means in said piston having means for affording fluid flow through said passage means from said second side to said first side of said piston and preventing fluid flow through said passage means from said first side to said second side of said piston.
  • a marine propulsion device comprising a support bracket adapted to be attached to a boat hull, a propulsion assembly including a swivel bracket and a propulsion unit carried by said swivel bracket, a tilt pin connecting said propulsion assembly and said support bracket on a horizontal transverse axis for tilting movement of said propulsion assembly in a vertical plane between an operating position and a raised.
  • cylinder-piston means for facilitating manual tilting movement of said propulsion assembly upwardly about said axis when said support bracket is attached to a boat hull and for absorbing shock in the event said propulsion assembly strikes an underwater obstacle
  • said cylinder-piston means comprising a cylinder-piston assembly pivotally connected between said support bracket and said propulsion assembly, said cylinder-piston assembly being substantially fully contracted when said propulsion assembly is in the operating position and being substantially fully extended when said propulsion assembly is in the raised position, and extending generally vertically throughout movement of said propulsion assembly between the operating and raised positions, a predetermined quantity of an incompressible liquid partially filling said cylinderpiston assembly, and a pressurized gas at a predetermined pressure higher than atmospheric pressure filling the remainder of the otherwise unoccupied space inside said cylinder-piston assembly.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Actuator (AREA)
US339587A 1973-03-09 1973-03-09 Combined damping and lift means for marine propulsion device Expired - Lifetime US3863592A (en)

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US339587A US3863592A (en) 1973-03-09 1973-03-09 Combined damping and lift means for marine propulsion device
CA190,413A CA1028576A (en) 1973-03-09 1974-01-17 Combined damping and lift means for marine propulsion device
JP49025804A JPS595480B2 (ja) 1973-03-09 1974-03-07 船外機

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JP (1) JPS595480B2 (enrdf_load_stackoverflow)
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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983835A (en) * 1975-04-24 1976-10-05 Outboard Marine Corporation Gas pressurized hydraulic marine propulsion tilting system with automatic let-down assembly
US4013249A (en) * 1975-12-03 1977-03-22 Outboard Marine Corporation Auxiliary motor mounting assembly
FR2322779A1 (fr) * 1975-09-04 1977-04-01 Brunswick Corp Appareil de basculement et de reglage d'inclinaison a commande hydraulique pour dispositifs de propulsion de marine
FR2340853A1 (fr) * 1976-02-11 1977-09-09 Pipoz Georges Support de moteur auxiliaire pour bateau
US4196924A (en) * 1977-07-28 1980-04-08 Ohta Company Limited Automatic door closing device
FR2487289A1 (fr) * 1980-07-28 1982-01-29 Outboard Marine Corp Moteur hors-bord pourvu de moyens pour effectuer d'une maniere sequentielle le basculement et l'equilibrage
US4323356A (en) * 1979-02-23 1982-04-06 Outboard Marine Corporation Marine transmission control with vibration isolation system
US4354848A (en) * 1980-07-28 1982-10-19 Outboard Marine Corporation Outboard motor with tilt linkage including pivot link
US4363629A (en) * 1980-09-02 1982-12-14 Outboard Marine Corporation Hydraulic system for outboard motor with sequentially operating tilt and trim means
US4449945A (en) * 1981-08-17 1984-05-22 Outboard Marine Corporation Outboard motor mounting arrangement
US4482331A (en) * 1981-11-16 1984-11-13 Brunswick Corporation Dampener for vane steering of marine drive
US4493659A (en) * 1980-12-03 1985-01-15 Yamaha Hatsudoki Kabushiki Kaisha Tilt-lock mechanism
US4545769A (en) * 1982-06-08 1985-10-08 Yamaha Hatsudoki Kabushiki Kaisha Tilt locking system for boat propellers
US4551104A (en) * 1983-02-22 1985-11-05 Sanshin Kogyo Kabushiki Kaisha Tilt lock mechanism for marine propulsion device
US4575342A (en) * 1982-12-28 1986-03-11 Sanshin Kogyo Kabushiki Kaisha Tilt lock mechanism for marine propulsion device
US4605375A (en) * 1984-01-27 1986-08-12 Outboard Marine Corporation Trim and tilt control for marine propulsion devices
US4605377A (en) * 1984-06-21 1986-08-12 Outboard Marine Corporation Manual lift means for marine propulsion device
US4784625A (en) * 1983-11-29 1988-11-15 Sanshin Kobyo Kabushiki Kaisha Tilt lock mechanism for marine propulsion device
US4890811A (en) * 1987-09-21 1990-01-02 Ehni Scott M Outboard motor mounting means for boats
US4944705A (en) * 1987-10-26 1990-07-31 Kayaba Kogyo Kabushiki Kaisha Tilt damper
AU605765B2 (en) * 1981-08-17 1991-01-24 Outboard Marine Corporation Outboard motor mounting arrangement
ITVE20130012A1 (it) * 2013-04-11 2014-10-12 Franco Moro Gruppo motore perfezionato.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8412854D0 (en) * 1984-05-19 1984-06-27 British Aerospace Industrial processing and manufacturing systems
CA1311656C (en) * 1987-06-01 1992-12-22 Martin J. Mondek Marine propulsion tilt and trim mechanism

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US1219035A (en) * 1916-04-11 1917-03-13 Ralph H Pettengill Shock-absorber.
US2196068A (en) * 1936-01-18 1940-04-02 Cleveland Pneumatic Tool Co Shock absorber
US2721074A (en) * 1948-06-18 1955-10-18 Bourcier Christian Marie Louis Hydraulic-pneumatic shock absorber
US2774447A (en) * 1951-12-10 1956-12-18 Bourcier Christian Marie Louis Shock absorber
US2823915A (en) * 1953-05-21 1958-02-18 Bourcier Christian Marie Louis Shock absorbers
US2992864A (en) * 1954-01-23 1961-07-18 Bourcier Christian-Marie-Luci Shock absorbers
US3003724A (en) * 1960-08-05 1961-10-10 Kiekhaefer Elmer Carl Damping and lift device for outboard motors
US3158346A (en) * 1962-03-26 1964-11-24 Mcculloch Corp Reverse lock for outboard motors
US3201112A (en) * 1962-12-11 1965-08-17 Fichtel & Sachs Ag Hydropneumatic suspension unit
US3250501A (en) * 1964-09-17 1966-05-10 Kiekhaefer Corp Outboard stern drive for boats and hydraulic shock absorber therefor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246915A (en) * 1963-08-06 1966-04-19 Kiekhaefer Corp Outboard propulsion units for boats

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1219035A (en) * 1916-04-11 1917-03-13 Ralph H Pettengill Shock-absorber.
US2196068A (en) * 1936-01-18 1940-04-02 Cleveland Pneumatic Tool Co Shock absorber
US2721074A (en) * 1948-06-18 1955-10-18 Bourcier Christian Marie Louis Hydraulic-pneumatic shock absorber
US2774447A (en) * 1951-12-10 1956-12-18 Bourcier Christian Marie Louis Shock absorber
US2823915A (en) * 1953-05-21 1958-02-18 Bourcier Christian Marie Louis Shock absorbers
US2992864A (en) * 1954-01-23 1961-07-18 Bourcier Christian-Marie-Luci Shock absorbers
US3003724A (en) * 1960-08-05 1961-10-10 Kiekhaefer Elmer Carl Damping and lift device for outboard motors
US3158346A (en) * 1962-03-26 1964-11-24 Mcculloch Corp Reverse lock for outboard motors
US3201112A (en) * 1962-12-11 1965-08-17 Fichtel & Sachs Ag Hydropneumatic suspension unit
US3250501A (en) * 1964-09-17 1966-05-10 Kiekhaefer Corp Outboard stern drive for boats and hydraulic shock absorber therefor

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983835A (en) * 1975-04-24 1976-10-05 Outboard Marine Corporation Gas pressurized hydraulic marine propulsion tilting system with automatic let-down assembly
FR2322779A1 (fr) * 1975-09-04 1977-04-01 Brunswick Corp Appareil de basculement et de reglage d'inclinaison a commande hydraulique pour dispositifs de propulsion de marine
US4013249A (en) * 1975-12-03 1977-03-22 Outboard Marine Corporation Auxiliary motor mounting assembly
FR2340853A1 (fr) * 1976-02-11 1977-09-09 Pipoz Georges Support de moteur auxiliaire pour bateau
US4196924A (en) * 1977-07-28 1980-04-08 Ohta Company Limited Automatic door closing device
US4323356A (en) * 1979-02-23 1982-04-06 Outboard Marine Corporation Marine transmission control with vibration isolation system
FR2487289A1 (fr) * 1980-07-28 1982-01-29 Outboard Marine Corp Moteur hors-bord pourvu de moyens pour effectuer d'une maniere sequentielle le basculement et l'equilibrage
US4354848A (en) * 1980-07-28 1982-10-19 Outboard Marine Corporation Outboard motor with tilt linkage including pivot link
US4373921A (en) * 1980-07-28 1983-02-15 Outboard Marine Corporation Outboard motor with sequentially operating tilt and trim means
US4363629A (en) * 1980-09-02 1982-12-14 Outboard Marine Corporation Hydraulic system for outboard motor with sequentially operating tilt and trim means
US4493659A (en) * 1980-12-03 1985-01-15 Yamaha Hatsudoki Kabushiki Kaisha Tilt-lock mechanism
US4449945A (en) * 1981-08-17 1984-05-22 Outboard Marine Corporation Outboard motor mounting arrangement
AU605765B2 (en) * 1981-08-17 1991-01-24 Outboard Marine Corporation Outboard motor mounting arrangement
US4482331A (en) * 1981-11-16 1984-11-13 Brunswick Corporation Dampener for vane steering of marine drive
US4545769A (en) * 1982-06-08 1985-10-08 Yamaha Hatsudoki Kabushiki Kaisha Tilt locking system for boat propellers
US4575342A (en) * 1982-12-28 1986-03-11 Sanshin Kogyo Kabushiki Kaisha Tilt lock mechanism for marine propulsion device
US4551104A (en) * 1983-02-22 1985-11-05 Sanshin Kogyo Kabushiki Kaisha Tilt lock mechanism for marine propulsion device
US4784625A (en) * 1983-11-29 1988-11-15 Sanshin Kobyo Kabushiki Kaisha Tilt lock mechanism for marine propulsion device
US4605375A (en) * 1984-01-27 1986-08-12 Outboard Marine Corporation Trim and tilt control for marine propulsion devices
US4605377A (en) * 1984-06-21 1986-08-12 Outboard Marine Corporation Manual lift means for marine propulsion device
US4890811A (en) * 1987-09-21 1990-01-02 Ehni Scott M Outboard motor mounting means for boats
US4944705A (en) * 1987-10-26 1990-07-31 Kayaba Kogyo Kabushiki Kaisha Tilt damper
ITVE20130012A1 (it) * 2013-04-11 2014-10-12 Franco Moro Gruppo motore perfezionato.

Also Published As

Publication number Publication date
JPS49126097A (enrdf_load_stackoverflow) 1974-12-03
JPS595480B2 (ja) 1984-02-04
CA1028576A (en) 1978-03-28

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