Abstract: A pivoting arrangement for connecting an actuator to the outboard drive portion of a marine propulsion unit and more particularly to an arrangement for strengthening the pivotal connection without significantly increasing its size and by simplifying its construction to reduce cost.

Abstract: A pivoting arrangement for connecting an actuator to the outboard drive portion of a marine propulsion unit and more particularly to an arrangement for strengthening the pivotal connection without significantly increasing its size and by simplifying its construction to reduce cost.

Abstract: A tilt and trim system for the outboard drive of a marine propulsion unit wherein the popping up action is effectively damped without positive stops that could cause abrupt stopping and possible damage.

Abstract: An improved hydraulic system for a marine propulsion unit where it is insured that leakage of the shuttle valve will not permit the propulsion unit to move from the desired position by having a series of shuttle piston operated check valves inn series flow between the pump and the hydraulic unit that controls the position.

Abstract: A very effective unit for adjusting the condition of a marine propulsion device that is constructed in such a way to protect the various components from wear caused by foreign particles that may be formed during its life by trapping the particles in a cavity formed in an upper surface of an actuating piston.

Abstract: An improved high pressure intermeshing gear pump that achieves high efficiency and a low cost by forming the pumping cavity such that no fillets exist at the corners permitting closed fits without utilizing bearing end plates. In addition an improved coupling between the gears and their supporting shafts is disclosed as is a simplified machining method that eliminates burrs that may be formed during the drilling operations.

Abstract: An improved high pressure intermeshing gear pump that achieves high efficiency and a low cost by forming the pumping cavity such that no fillets exist at the corners permitting closed fits without utilizing bearing end plates. In addition an improved coupling between the gears and their supporting shafts is disclosed as is a simplified machining method that eliminates burrs that may be formed during the drilling operations.

Abstract: An improved power generator having a pair of relatively rotatable elements each of which may be selectively driven in an opposite direction and at a desired speed by one of a pair of oppositely rotating prime movers to vary the power output and achieve a greater maxim power at a lower speed than conventional devices to reduce vibration and provide a longer life. The unit is comprised of a number of interconnected housing elements so that it can be compact, easily assembled and mounted. A clutch and brake arrange is incorporated to facilitate starting of the prime movers and to insure that one does not drive the other particularly in the wrong direction. In addition a cooling arrangement is provided that accomplishes the necessary cooling with respect to the amount op power generated.

Abstract: A very effective unit for adjusting the condition of a marine propulsion device that is constructed in such a way to protect the various components from wear caused by foreign particles that may be formed during its life by trapping the particles in a cavity formed in an upper surface of an actuating piston.

Abstract: Several embodiments of prime mover driven electrical generators wherein the power output is increased without increasing the driving speed by driving both of the generator elements in opposite directions.

Abstract: A pivoting arrangement for connecting an actuator to the outboard drive portion of a marine propulsion unit and more particularly to an arrangement for strengthening the pivotal connection without significantly increasing its size and by simplifying its construction to reduce cost.

Abstract: A tilt and trim system for the outboard drive of a marine propulsion unit wherein the popping up action is effectively damped without positive stops that could cause abrupt stopping and possible damage.

Abstract: A pivoting arrangement for connecting an actuator to the outboard drive portion of a marine propulsion unit and more particularly to an arrangement for strengthening the pivotal connection without significantly increasing its size and by simplifying its construction to reduce cost.

Abstract: An improved hydraulic system for a marine propulsion unit where it is insured that leakage of the shuttle valve will not permit the propulsion unit to move from the desired position by having a series of shuttle piston operated check valves inn series flow between the pump and the hydraulic unit that controls the position.

Abstract: An improved high pressure intermeshing gear pump that achieves high efficiency and a low cost by forming the pumping cavity such that no fillets exist at the corners permitting closed fits without utilizing bearing end plates. In addition an improved coupling between the gears and their supporting shafts is disclosed as is a simplified machining method that eliminates burrs that may be formed during the drilling operations.

Abstract: Two embodiments of tilt mounting attachments for mounting outboard drives on the transom of a watercraft. In each embodiment, the structure is simplified from the prior art and the number of components reduced. Thus, the unit can be made lighter in weight without sacrificing strength and the cost of assembly is substantially reduced.

Abstract: An improved high pressure intermeshing gear pump that achieves high efficiency and a low cost by forming the pumping cavity such that no fillets exist at the corners permitting closed fits without utilizing bearing end plates. In addition an improved coupling between the gears and their supporting shafts is disclosed as is a simplified machining method that eliminates burrs that may be formed during the drilling operations.

Abstract: An improved tilt piston stroke control arrangement that employs a stroke control valve that controls the tilt stroke by closing a hydraulic conduit at a predetermined stroke position to thus shutting off the feed of hydraulic pressure to the tilt cylinder. Thus, the stroke control valve can be provided in any position in the associated hydraulic circuit. This increases the degree of freedom for layout and makes it possible to achieve a compact layout.

Abstract: A hydraulic tilt and trim device for a marine propulsion unit and a method of forming such a device. This is done by utilizing a cast in pipe that is cast into the molded housing assembly for the tilt and trim device and which can be subsequently machined so as to form complete passages for the hydraulic system and thus minimizing the number of drilled and bored passages that must be formed.

Abstract: A tilt and trim assembly for tilting an outboard drive includes an improved construction. The tilt and trim assembly has an outer cylinder defining a first internal cavity, a tilt cylinder slidably supported in the cavity and defining a second internal cavity, a tilt piston slidably supported within the second cavity and a piston rod affixed to the tilt piston and extending beyond the cavities. In one aspect, the tilt and trim assembly further has a latching mechanism to lock the tilt cylinder at the fully tilt up position. The latching mechanism includes a first engaging section defined directly at the tilt cylinder and a second engagement section defined at the outer cylinder. The tilt cylinder directly receives the tilt piston when it is placed at the deepest position. In another aspect, a lower section of the outer cylinder is thicker than an upper section thereof. A pressurizing mechanism is provided for pressuring working fluid in the cavities and has a powering assembly therein.