Outboard Marine Corporation

Robert F Young

Charles B Hall

Edward D McBride

George L Broughton

H Norman Petersen

Jeffrey P Higby

William D Dunham

John D Flaig

An outboard motor comprising a propulsion unit having opposite first and second sides and including a lower unit including a rotatably mounted propeller, and a drive shaft housing including a drive shaft drivingly connected to the propeller, and a power head mounted on the drive shaft housing and including an internal combustion engine drivingly connected to the drive shaft, a cowl assembly enclosing the power head and including a first lower cowl member removably and resiliently mounted on the first side of the propulsion unit, a second lower cowl member removably and resiliently mounted on the second side of the propulsion unit, and an upper cowl member removably mounted on the first and second lower cowl members, and a bolt detachably connecting the first lower cowl member to the second lower cowl member.

Outboard motor cowl assembly

Shifting of a marine propulsion device transmission drivingly connecting a drive shaft to an internal combustion engine and including a rotatable member operable to shift the transmission between forward drive, reverse drive and neutral positions in response to rotation of a shift lever is assisted by a shift assistance arrangement including a pivotal actuation lever connected to a push-pull assembly operated by a main control and a connecting link pivotally connected to the shift lever and to the actuator lever. The pivotal connection between the connecting link and the actuation lever includes a slider element mounted for reciprocative axial movement relative to the connecting link and pivotally receiving a pivot pin on the actuation lever. A pair of springs acting on the opposite ends of the slider element maintain the connecting link and the actuation lever in a normal position so they move together to effect shifting when the resistance to transmission shift is below a predetermined level. The slider element, and thus the actuation lever, is displaced relative to the connecting link from the normal position when the shift resistance is above that level. The shift arrangement also includes a switch which is carried by the actuation lever and is engaged to interrupt engine ignition by a pair of cams on the connecting link when the actuation lever is displaced from the normal position only during shifting from either the forward drive position or the reverse drive position to the neutral position.

Marine propulsion device including ignition interruption means to assist

Disclosed herein is a marine propulsion device comprising a first pivot connecting a stern bracket to a transom bracket for pivotal movement therebetween about a first pivot axis which is horizontal when the transom bracket is boat mounted, a second pivot connecting the swivel bracket to the stern bracket for pivotal movement of the swivel bracket with the stern bracket and relative to the stern bracket about a second pivot axis parallel to the first pivot axis, a propulsion unit including, at the lower end thereof, a rotatably mounted propeller and connected to the swivel bracket for steering movement therebetween and for common pivotal movement, a trim cylinder-piston assembly pivotally connected to the stern bracket and to the swivel bracket and including first and second ends, a tilt cylinder-piston assembly pivotally connected to the transom bracket means and to the stern bracket and including first and second ends, and a hydraulic system for sequentially operating the tilt and trim cylinder-piston assemblies.

Hydraulic system for marine propulsion device with sequentially

Disclosed herein is a marine propulsion device comprising a trim cylinder pivotally connected to a stern bracket and to a swivel bracket, a tilt cylinder pivotally connected to a transom bracket and to the stern bracket, a reversible pump including first and second ports, a first conduit communicating between the first pump port and one end of the trim cylinder, a second conduit communicating between the first pump port and one end of the tilt cylinder, a third conduit including a third check valve dividing the third conduit into an upstream portion communicating with the second pump port and a downstream portion communicating with the other end of the trim cylinder, a fourth conduit including a fourth check valve dividing the fourth conduit into an upstream portion communicating with the second pump port and a downstream portion communicating with the other end of the tilt cylinder, and a fifth conduit including a fifth check valve communicating between the downstream portion of the third conduit and the downstream portion of the fourth conduit, and operable to prevent fluid flow from the downstream portion of the third conduit to the downstream portion of the fourth conduit, and to permit fluid flow from the downstream portion of the fourth conduit to the downstream portion of the third conduit in response to the presence of fluid under pressure above a predetermined level in the downstream portion of the fourth conduit.

Disclosed herein is an outboard motor comprising a transom bracket adapted to be connected to a boat transom, a propulsion unit which is mounted to the transom bracket for pivotal steering movement of the propulsion unit in a horizontal plane and for pivotal movement of the propulsion unit in a vertical plane between a lowermost running position and a full tilt position, which propulsion unit mounting includes a first pivot connecting an intermediate bracket to the transom bracket for pivotal movement of the intermediate bracket relative to the transom bracket about a first pivot axis which is horizontal when the transom bracket is boat mounted, whereby to enable movement of the propulsion unit through a tilt range, a second pivot connecting a swivel bracket to the intermediate bracket for pivotal movement of the swivel bracket with the intermediate bracket and relative to the intermediate bracket about a second pivot axis parallel to the first pivot axis, whereby to enable movement of the propulsion unit through a trim range, and a king pin pivotally connecting the propulsion unit to the swivel bracket for steering movement of the propulsion unit relative to the swivel bracket about a generally vertical axis and for common pivotal movement with the swivel bracket in a vertical plane about the first and second horizontal axes, hydraulic cylinders for sequentially displacing the propulsion unit from the lowermost position through the trim range and then through the tilt range to the full tilt position, and a support on the transom bracket for providing side support to the intermediate bracket.

Lateral support arrangement for outboard motor with separate tilt and

Disclosed herein is a marine propulsion device comprising a bracket adapted to be fixed relative to a boat transom, a propulsion unit including a steering arm, pivots pivotally connecting the bracket and the propulsion unit for vertical pivotal movement of the propulsion unit about a tilt axis which is substantially horizontal when the bracket is boat mounted, and for swinging movement of the propulsion unit about a steering axis which is generally transverse to the horizontal axis, a support rod fixed in spaced parallel rotation to the bracket and against movement axially of the horizontal axis and for tilting movement in common with the propulsion unit, a member carried by the support rod for movement axially of the support rod, a coupling connecting the member and the steering arm for swinging the propulsion unit about the steering axis in response to movement of the member axially of the support rod, and mechanism for selectively displacing the member axially of the support rod to thereby steer the propulsion unit.

Marine propulsion device steering mechanism

Disclosed herein is a marine propulsion device comprising a transom bracket adapted to be connected to a boat transom, a stern bracket having an upper end, a first pivot connecting the upper end of the stern bracket to the transom bracket for pivotal movement of the stern bracket relative to the transom bracket about a first pivot axis which is horizontal when the transom bracket is boat mounted, a swivel bracket, a second pivot connecting the swivel bracket to the stern bracket below the first pivot for pivotal movement of the swivel bracket relative to the stern bracket about a second pivot axis parallel to the first pivot axis, a propulsion unit including, at the lower end thereof, a rotatably mounted propeller, a third pivot connecting the propulsion unit to the swivel bracket for steering movement of the propulsion unit relative to the swivel bracket about a generally vertical axis and for common pivotal movement with the swivel bracket in a vertical plane about the first and second horizontal axes, and a system for sequentially pivotally displacing the swivel bracket and connected propulsion unit about the second pivot axis and then about the first pivot axis.

Outboard motor with sequentially operating tilt and trim means

Disclosed herein is a marine propulsion device comprising a transom bracket adapted to be connected to a boat transom, a first pivot connecting a stern bracket to the transom bracket for pivotal movement of the stern bracket relative to the transom bracket about a first pivot axis which is horizontal when the transom bracket is boat mounted, a second pivot connecting a swivel bracket to the stern bracket below the first pivot for pivotal movement of the swivel bracket with the stern bracket and relative to the stern bracket about a second pivot axis parallel to the first pivot axis, a king pin pivotally connecting a propulsion unit including a rotatably mounted propeller to the swivel bracket for steering movement of the propulsion unit relative to the swivel bracket about a generally vertical axis and for common pivotal movement with the swivel bracket in a vertical plane about the first and second horizontal axes, a trim cylinder-piston assembly pivotally connected to the stern bracket and to the swivel bracket, a tilt cylinder-piston assembly pivotally connected to the transom bracket and to the stern bracket, and a fluid conduit system communicating between a source of pressure fluid and each of the tilt cylinder-piston assembly and the trim cylinder-piston assembly and including apparatus operable, during reverse operation of the propulsion unit, for causing initial full extension to the trim cylinder-piston assembly, followed by extension of the tilt cylinder-piston assembly, and for causing initial full contraction of the tilt cylinder-piston assembly, followed by subsequent contraction of the trim cylinder-piston assembly.

Hydraulic system for outboard motor with sequentially operating tilt and

Disclosed herein is a marine propulsion device comprising a transom bracket adapted to be connected to a boat transom, a tilt bracket having an upper end, a first pivot located behind the transom and connecting the tilt bracket to the transom bracket for pivotal movement of the tilt bracket relative to the transom bracket between a lower position and a full tilt position about a first pivot axis which is horizontal when the transom bracket is boat mounted, a trim bracket, a second pivot connecting the trim bracket to the tilt bracket below the first pivot for pivotal movement of the trim bracket relative to the tilt bracket between a lowermost position and a full trim position about a second pivot axis parallel to the first pivot axis, a propulsion unit including, at the lower end thereof, a rotatably mounted propeller, a third pivot connecting the propulsion unit to the trim bracket for steering movement of the propulsion unit relative to the trim bracket about a generally vertical axis and for common pivotal movement with the trim bracket in a vertical plane about the first and second horizontal axes, and a linkage system including a toggle linkage and an extensible link connected to the toggle linkage for sequentially pivotally displacing the trim bracket and connected propulsion unit upwardly about the second pivot axis and then upwardly about the first pivot axis.

Dual pivot outboard motor with trim and tilt toggle linkage

Disclosed herein is an outboard motor comprising a transom bracket adapted to be fixedly mounted to a boat transom, an intermediate bracket, a pivot connecting the intermediate bracket to the transom bracket for pivotal movement of the intermediate bracket in a vertical plane about a first axis which is horizontal when the transom bracket is boat mounted, a propulsion unit including a propeller, a king pin connecting the propulsion unit to the intermediate bracket for pivotal sterring movement of the propulsion unit in a horizontal plane relative to the intermediate bracket, a pivot link, a pivot connecting the pivot link to the transom bracket for pivotal movement about a second axis parallel to the first axis, an extensible link having opposite ends, a pivot connecting one of the opposite ends of the extensible link to the pivot link about a third axis parallel to the first axis, a pivot connecting the other of the opposite ends of the extensible link to the intermediate bracket about a fourth axis parallel to the first axis, and a link operable, in response to extension of the extensible link, for pivoting the pivot link so as to additionally increase the distance from the second axis to the fourth axis.

Outboard motor with tilt linkage including pivot link

A propulsion assembly includes hydraulic trim and tilt cylinders and a reversible pump effective when operating in a first mode, to supply hydraulic fluid under pressure to a first port and to provide suction at a second port and effective when operating in a second mode, to supply hydraulic fluid under pressure to the second port and to provide suction at the first port, a first conduit communicating between one end of the tilt cylinder and the first pump port and including a first valve biased so as to releasably prevent flow from the first end of the tilt cylinder to the first pump port and so as to permit fluid flow from the first pump port to the first end of the tilt cylinder in response to the presence of hydraulic fluid under pressure at the first pump port, a second conduit communicating between the first end of the trim cylinder and the first pump port independently of the first conduit, and a piston communicating with the second pump port for actuating the first valve against the bias thereof and in response to the presence of hydraulic fluid under pressure at the second pump port so as to permit hydraulic fluid flow from the first end of the tilt cylinder to the first pump port without affecting the trim cylinder-piston assembly.

Growing community of inventors

Kenosha, WI, United States of America

Robert F Young