US3799104A - Hydraulic trim/tilt system for outboard propulsion units - Google Patents

Hydraulic trim/tilt system for outboard propulsion units Download PDF

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Publication number
US3799104A
US3799104A US00317061A US31706172A US3799104A US 3799104 A US3799104 A US 3799104A US 00317061 A US00317061 A US 00317061A US 31706172 A US31706172 A US 31706172A US 3799104 A US3799104 A US 3799104A
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Prior art keywords
chamber
cylinder
pressure
piston
valve
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US00317061A
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English (en)
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L Kurling
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Volvo Penta AB
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Volvo Penta AB
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20561—Type of pump reversible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/27—Directional control by means of the pressure source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/61—Secondary circuits
    • F15B2211/613—Feeding circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/775—Combined control, e.g. control of speed and force for providing a high speed approach stroke with low force followed by a low speed working stroke with high force, e.g. for a hydraulic press

Definitions

  • a hydraulic system for trimming and tilting outboard drives for boats comprises a pump adapted to deliver fluid pressure to a double acting cylindeppiston assembly, which is connected to the tiltable outboard drive unit and to a stationary part of the boat.
  • a valve selects between two modes of operation of the cylinder. In one mode the chambers of the cylinder are interconnected to provide rapid tilt operation. In the other mode, one chamber is connected to the pump and the other is connected to the fluid sump to provide relatively less rapid trimming with greater force.
  • the fluid pressure delivered by the pump to the cylinder will act on the difference between the piston areas of the two chambers of the cylinder, i.e. on the cross-sectional area of the piston rod. Since this area is much smaller than the total piston area exposed to the chamber at the piston end of the cylinder, the fluid will cause a fast movement of the piston and little force, which is desired during tilting.
  • the cylinder-piston assembly is arranged, as in said U. S. Pat. No. 3,548,777, so that an outward movement of the piston rod causes an upward tilting of the drive unit.
  • the chamber at the piston rod end of the cylinder is drained by a connection to a sump tank.
  • fluid pressures is then delivered to the piston area, it causes a slow motion of the piston rod with great force which results in a slow upward swinging of the drive with a force which is able to overcome the propeller thrust when trimming during forward driving of the boat.
  • valve unit comprises pressure sensitive means which automatically adjusts the valve unit from said first position to said second position in response to the higher pressure built up in the system during trimming the drive unit against the propeller thrust.
  • the pressure sensitive means is adapted to adjust the valve unit to said first position in response to a relatively low pressure in the system caused by a low load on the piston rod when the boat is not being driven forward.
  • FIG. 1 is a side view of an inboard-outboard drive unit for a boat embodying the invention
  • FIG. 2 is a schematic view of a previous known hydraulic trim/tilt system with two cylinders.
  • FIG. 3 is a schematic view of the hydraulic system according to the invention, with an automatically adjustable valve unit.
  • This invention contemplates an outboard drive unit for a boat, such as the inboard-outboard unit shown in FIG. 1 as comprising an outboard leg 60 mounted for tilting on a pivot 61 to the boat transom 62.
  • the leg is arranged for steering, for example, as shown in U. 8. Pat. No. 3,605,677 Bergstedt, and is provided with a cylinder 63 rockably connected to a fixed portion 64 of the boat or drive unit and with an extensible piston rod 35 pivotally connected to the leg, whereby extension of the rod causes rearward trimming or tilting movement of the leg about pivot 61.
  • a control cable or rod linkage 56, 58 leads from a housing 65 which may form an integral port of the cylinder and in which control valves of the system are contained.
  • a pump and fluid sump schematically shown at P is connected by means of fluid conduits schematically represented at 66 to supply pressure fluid to and receive return fluid from the control system.
  • FIG. 2 The known hydraulic system showed'in FIG. 2 comprises a reversible pump 1 which can deliver fluid in both directions, and it is therefore connected to the sump tank 6 over two lines 2 and 3 with back pressure valves 4 and 5.
  • the pump is also connected to the sump tank via lines 7 and 8 comprising safety relief valves 9 and 10.
  • the lines 2 and 3 of which one acts as a suction line and the other as a pressure line depending on the pump direction of the pump 1, connect the pump to two regulating valve units 11 and 12, of which the first one 11 communicates, via the lines 13 and 14, with the chamber 16 at the piston end of a double acting tilt cylinder 17 and also with a single acting trim cylinder 19- in order to regulate the fluid flow to and from these cylinders.
  • the other regulating valve unit 12 communicates, via the line 15, with the chamber 20 at the piston rod end of the double acting cylinder 17. Both valve units 11 and 12 also communicate with the sump tank via respective return lines 21 and 22. Units 11 and 12 comprise respective piston means 25 and 26, which are influenced by the pressure in lines 3 and 2 and which are spring biased by respective compression springs 23 and 24 against the pressure in the respective lines.
  • the piston means 25 controls the communication between sump return line 21 and lines 13 and 14 depending on the pressure in line 3, while piston means 26 controls the communication between sump return line 22 and line 15 depending on the pressure in line 2.
  • the hydraulic system further comprises a lock valve 27, which is manually adjustable and is interposed in the line 15 which communicates with the chamber 20 in cylinder 17.
  • the system also comprises a safety relief valve 29 in a short circuit line 28 connecting between lines 13 and 15.
  • Another safety relief valve is disposed in a channel in the piston 32, said channel connecting chambers 16 and 20 of the double acting cylinder to each other.
  • the system also comprises a line 33, which via a relief valve 48 connects line 13 to the sump tank.
  • the described system suffers of very little, actually neglectable, leakage and keeps the pistons 32 and 34 of the cylinders 17 and 19 in their adjusted positions.
  • the hydraulic cylinders are adapted to act between a stationary part of the boat and the tiltable part of the drive unit in such a way that an outward movement of the respective piston rods 35 and 36 causes an upward swinging movement of the drive. This arrangement, being well known in the art, is therefore not further shown in the drawings.
  • the pump When the angular position of the drive unit is to be adjusted, for upward or downward tilting or trimming, the pump is actuated and connected in the desired direction until the desired position of the drive unit is achieved.
  • the pump is actuated and connected in a direction which makes the line 3 constitute a suction line and the line 2 a pressure line.
  • the pressure in line 2 opens a spring biased back pressure ball valve 37 in the regulating valve unit 11, whereupon the fluid under pressure is delivered to chambers 16 and 18 in the cylinder 17 and 19 via lines 13 and 14.
  • the pressure in line 2 causes the piston 26 in the regulating valve unit 12 to move to the right as seen in FIG. 2 and thus force open a back pressure valve 38 in the valve unit 12, whereupon chamber 20 in the cylinder 17 communicates with the sump tank 6 via the line and the return line 22.
  • the trimming cylinder has a relatively short stroke.
  • the piston 32 of cylinder 17 has a smaller area than the piston 34 of cylinder 19 and as the same pressure prevails in the cylinder chambers 16 and 18, a fast outward movement of the piston rod 35, and thus a fast tilting of the drive, is achieved after the piston 34 has reached its limit.
  • the rod 36 is so arranged that the outboard leg swings away therefrom beyond the trim range.
  • the cylinder 17 When the boat is propelled, whereby the piston rods 35 and 36 are exposed to the force caused by the propeller thrust which tends to press the pistons inwardly, the cylinder 17, due to its small piston area, is not able to produce an outwardly directed force which is enough to overcome the propeller force and accomplish a short movement of the drive for trimming.
  • the short movement of the drive is instead accomplished primarily by the cylinder 19 with the piston 34 which has a larger piston area, assisted to some extent by the lesser force of piston 32.
  • the cylinder 19 is preferably positioned so that a relatively long moment arm is obtained, which is made possible by the fact that only a relatively short swinging motion is needed for trimming compared with tilting.
  • the cylinder 17, however, is positioned so that a relatively short moment arm is obtained, in order to get a fast and wide swinging movement.
  • valve 27 works as a lock valve which is manually adjustable together with the gear mechanism of the drive in order to block the drainage from the cylinder chamber 20. In this way it is ensured that the drive will not be tilted by the rearwardly directed propeller force during reverse drive.
  • the valve 29 is a safety release valve which permits drainage of the chamber 20 if the drive is exposed to an extreme rearwardly directed force, for example upon impact with a submerged or floating object.
  • Valve 30 has the same function when the lock valve 27 is in its locking position.
  • FIG. 3 The hydraulic system according to the invention will hereunder be described with reference to FIG. 3 in which the components corresponding to those in FIG. 2 have been given the same number as in FIG. 2.
  • the system shown in FIG. 3 corresponds in most parts to the system in FIG. 2, the difference being that the valve 12 is replaced by a regulating valve unit 41 and that the hydraulic cylinder 19 is abolished.
  • the hydraulic cylinder 63 is designed similarly to cylinder 17 of FIG. 2 but with larger dimensions.
  • the regulating valve unit 41 includes, like valve 12 of FIG. 2, a piston 26 influenced by the pressure in line 2.
  • the piston is spring biased by a spring 42 and controls the back pressure valve 38 in the connection line between line 15 and the return line 22.
  • the system further comprises a back pressure valve 39 in the connection between the regulating valve unit 41 and the line 3.
  • the valve unit 41 has a second piston 44 which is also influenced by the pressure in line 2 and which controls a valve 45 connected to line 15 via a further valve 46.
  • valve 38 When the system pressure in chambers 16 and 47 is above the pressure at which valve 38 is opened, the fluid from line 15, accordingly, passes freely through valve 38 and does not force open valve 46. Fluid is therefore delivered by the pump 1 to chamber 16 only, whereby the pressure acts on the whole piston area exposed to chamber 16 and a slow piston movement with great force is achieved.
  • the spring 42 acting on the control piston 26 is preferably adjustable by well known means for varying the opening pressure of the valve 38, although adjusting means are omitted from the drawing for the sake of clarity.
  • Patents having some pertinence in connection with the present invention include No. 3,003,724 Kiekhaefer; No. 3,434,448 Woodfill; No. 3,653,270 Bergstedt; and No. 3,581,702 Moberg, in addition to No. 3,548,777 identified above.
  • a hydraulic system for trimming and tilting of outboard drive units for boats comprising pump means adapted to deliver fluid under pressure from a fluid sump to a double acting cylinder-piston assembly, said cylinder-piston assembly being arranged between said tiltable drive unit and the boat or a stationary part of the drive, characterized by a valve unit, said valve unit being adjustable between a first position in which the chamber at the piston rod end of the cylinder is disconnected from communication with said sump and connected to communicate with the chamber at the piston end of the cylinder, and a second position in which said chamber at said piston rod end of said cylinder is disconnected from communication with said chamber at said piston end of said cylinder and connected to communicate with said sump.
  • a hydraulic system for trimming and tilting an outboard drive leg for boats about a horizontal tilt axis comprising a hydraulic fluid sump, a double acting hydraulic cylinder-piston assembly including a piston rod and having a cylinder with a piston therein dividing the space in the cylinder into a first chamber at the piston end and a second chamber at the piston rod end of said cylinder, means connecting said cylinder-piston assembly between said leg and said boat and spanning said axis, and a source of pressure fluid connected to said first chamber, valve means connected to said sump and to each of said chambers adjustable between two positions in the first of which said valve means closes connection between said second chamber and said sump and opens a connection between said chambers and in the second of which it closes connection between said chambers and opens a connection from said second chamber to said sump.
  • valve means comprises pressure sensing means for automatic adjustment of said valve means from said first to said second positions in response to a pressure in the system in excess of a predetermined pressure.
  • a hydraulic system characterized in that the pressure sensing means is operative to adjust said valve means to said first position in response to said system pressure being less than said predetermined pressure which is characteristic of a low load on the piston rod, fluid being delivered to said first chamber partly from said source and partly from said second chamber when said valve is in said first position, and to adjust said valve means to said second position in response to such system pressure being in excess of said predetermined pressure which is characteristic of a relatively higher load on the piston rod, fluid being delivered to said first chamber only from said source and fluid displaced from said second chamber being returned to said sump when said valve is in said second position.
  • a hydraulic system characterized in that said pressure sensing means comprises two spring biased control pistons disposed in a housing of said valve means, one of said control pistons being operative to establish communication between said chambers in response to said pressure below said predetermined pressure, the other of said control pistons being operative to establish communication between 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
US00317061A 1971-12-21 1972-12-20 Hydraulic trim/tilt system for outboard propulsion units Expired - Lifetime US3799104A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE16407/71A SE350939B (enrdf_load_stackoverflow) 1971-12-21 1971-12-21

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US3799104A true US3799104A (en) 1974-03-26

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US00317062A Expired - Lifetime US3842789A (en) 1971-12-21 1972-12-20 Hydraulic trim/tilt system for outboard propulsion units
US00317061A Expired - Lifetime US3799104A (en) 1971-12-21 1972-12-20 Hydraulic trim/tilt system for outboard propulsion units

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US00317062A Expired - Lifetime US3842789A (en) 1971-12-21 1972-12-20 Hydraulic trim/tilt system for outboard propulsion units

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US (2) US3842789A (enrdf_load_stackoverflow)
JP (2) JPS4869287A (enrdf_load_stackoverflow)
CA (2) CA960917A (enrdf_load_stackoverflow)
DE (1) DE2262459A1 (enrdf_load_stackoverflow)
FR (1) FR2170501A5 (enrdf_load_stackoverflow)
GB (1) GB1369530A (enrdf_load_stackoverflow)
IT (1) IT974176B (enrdf_load_stackoverflow)
SE (1) SE350939B (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064824A (en) * 1975-04-24 1977-12-27 Outboard Marine Corporation Hydraulically powered marine propulsion tilting and trimming system with memory
US4395239A (en) * 1981-04-10 1983-07-26 Outboard Marine Corporation Hydraulic system for marine propulsion device with sequentially operating tilt and trim means
US4490120A (en) * 1982-12-20 1984-12-25 Brunswick Corporation Hydraulic trim-tilt system
US4493659A (en) * 1980-12-03 1985-01-15 Yamaha Hatsudoki Kabushiki Kaisha Tilt-lock mechanism
US4521202A (en) * 1982-04-26 1985-06-04 Yamaha Hatsudoki Kabushiki Kaisha Tilt locking system for ship propellers
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
US4568292A (en) * 1983-12-05 1986-02-04 Outboard Marine Corporation Hydraulic assistance device for use in a steering system
US4575342A (en) * 1982-12-28 1986-03-11 Sanshin Kogyo Kabushiki Kaisha Tilt lock mechanism for marine propulsion device
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
US5007866A (en) * 1988-10-04 1991-04-16 Sanshin Industries Co., Ltd. Trimming/tilting system for marine propulsion unit
US5067919A (en) * 1988-10-12 1991-11-26 Sanshin Industries Co., Ltd. Tilting/trimming system for marine propulsion unit
US6048234A (en) * 1997-03-07 2000-04-11 Yamaha Hatsudoki Kabushiki Kaisha Hydraulic tilt and trim unit for marine drive
US6089931A (en) * 1998-03-31 2000-07-18 Showa Corporation Trim-tilt device for marine propulsion device
US7901258B1 (en) * 2007-11-30 2011-03-08 Brp Us Inc. Hydraulic system for a marine outboard engine
US7942711B1 (en) * 2008-01-09 2011-05-17 Brunswick Corporation Method for controlling a marine propulsion trim system
US10689027B2 (en) 2017-07-13 2020-06-23 Cnh Industrial America Llc Hydraulic steering system of a work vehicle

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999502A (en) * 1975-09-04 1976-12-28 Brunswick Corporation Hydraulic power trim and power tilt system supply
CA1060724A (en) * 1976-03-24 1979-08-21 Charles B. Hall Hydraulically powered marine propulsion tilting and trimming system with memory
US4349041A (en) * 1979-08-20 1982-09-14 Nl Industries, Inc. Control valve system for blowout preventers
US4509405A (en) * 1979-08-20 1985-04-09 Nl Industries, Inc. Control valve system for blowout preventers
CA1151506A (en) * 1979-08-27 1983-08-09 Calvin V. Kern Hydraulic trim tilt system for outboard propulsion units using a pressure amplifier
US4457725A (en) * 1979-08-27 1984-07-03 Kern Calvin V Hydraulic trim tile system for outboard propulsion units using a pressure amplifier
JPS56160296A (en) * 1980-05-14 1981-12-09 Aisin Seiki Co Ltd Marine propeller lifting device
JPS59171791A (ja) * 1983-03-19 1984-09-28 Sanshin Ind Co Ltd 船舶推進機のチルト装置
JPH0270596A (ja) * 1989-06-12 1990-03-09 Yamaha Motor Co Ltd 船外機のチルトロック装置
US5018994A (en) * 1989-08-03 1991-05-28 Sanshin Kogyo Kabushiki Kaisha Tilting/trimming system for marine propulsion unit
JPH0659874B2 (ja) * 1989-12-16 1994-08-10 ヤマハ発動機株式会社 船外機のチルトロック装置
US5062349A (en) * 1990-03-19 1991-11-05 Baroid Technology, Inc. Fluid economizer control valve system for blowout preventers
JP3947258B2 (ja) * 1997-01-17 2007-07-18 ヤマハモーターパワープロダクツ株式会社 船舶用推進装置の上下揺動装置
JP2000062693A (ja) 1998-08-20 2000-02-29 Soqi Inc ハイドロチルト装置
US12065230B1 (en) 2022-02-15 2024-08-20 Brunswick Corporation Marine propulsion control system and method with rear and lateral marine drives
US12134454B1 (en) 2022-07-20 2024-11-05 Brunswick Corporation Marine propulsion system and method with single rear drive and lateral marine drive
US12258115B2 (en) 2022-07-20 2025-03-25 Brunswick Corporation Marine propulsion system and joystick control method
US12110088B1 (en) 2022-07-20 2024-10-08 Brunswick Corporation Marine propulsion system and method with rear and lateral marine drives

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US3241461A (en) * 1963-09-03 1966-03-22 Allis Chalmers Mfg Co Hydraulic control system
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Cited By (19)

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Publication number Priority date Publication date Assignee Title
US4096820A (en) * 1975-04-24 1978-06-27 Outboard Marine Corporation Hydraulically powered marine propulsion tilting system with automatic let-down assembly
US4064824A (en) * 1975-04-24 1977-12-27 Outboard Marine Corporation Hydraulically powered marine propulsion tilting and trimming system with memory
US4493659A (en) * 1980-12-03 1985-01-15 Yamaha Hatsudoki Kabushiki Kaisha Tilt-lock mechanism
US4395239A (en) * 1981-04-10 1983-07-26 Outboard Marine Corporation Hydraulic system for marine propulsion device with sequentially operating tilt and trim means
US4521202A (en) * 1982-04-26 1985-06-04 Yamaha Hatsudoki Kabushiki Kaisha Tilt locking system for ship propellers
US4545769A (en) * 1982-06-08 1985-10-08 Yamaha Hatsudoki Kabushiki Kaisha Tilt locking system for boat propellers
US4490120A (en) * 1982-12-20 1984-12-25 Brunswick Corporation Hydraulic trim-tilt system
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
US4568292A (en) * 1983-12-05 1986-02-04 Outboard Marine Corporation Hydraulic assistance device for use in a steering system
US4605377A (en) * 1984-06-21 1986-08-12 Outboard Marine Corporation Manual lift means for marine propulsion device
US5007866A (en) * 1988-10-04 1991-04-16 Sanshin Industries Co., Ltd. Trimming/tilting system for marine propulsion unit
US5067919A (en) * 1988-10-12 1991-11-26 Sanshin Industries Co., Ltd. Tilting/trimming system for marine propulsion unit
US6048234A (en) * 1997-03-07 2000-04-11 Yamaha Hatsudoki Kabushiki Kaisha Hydraulic tilt and trim unit for marine drive
US6089931A (en) * 1998-03-31 2000-07-18 Showa Corporation Trim-tilt device for marine propulsion device
US7901258B1 (en) * 2007-11-30 2011-03-08 Brp Us Inc. Hydraulic system for a marine outboard engine
US7942711B1 (en) * 2008-01-09 2011-05-17 Brunswick Corporation Method for controlling a marine propulsion trim system
US10689027B2 (en) 2017-07-13 2020-06-23 Cnh Industrial America Llc Hydraulic steering system of a work vehicle

Also Published As

Publication number Publication date
CA960917A (en) 1975-01-14
AU5004972A (en) 1974-06-20
SE350939B (enrdf_load_stackoverflow) 1972-11-13
IT974176B (it) 1974-06-20
JPS5933756Y2 (ja) 1984-09-19
DE2262459A1 (de) 1973-07-05
JPS5598700U (enrdf_load_stackoverflow) 1980-07-09
CA965650A (en) 1975-04-08
FR2170501A5 (enrdf_load_stackoverflow) 1973-09-14
JPS4869287A (enrdf_load_stackoverflow) 1973-09-20
US3842789A (en) 1974-10-22
GB1369530A (en) 1974-10-09

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