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| Number | Title | Issue Date |
| 7972189 | Tilt and trim device for outboard motor A tilt and trim device for an outboard motor includes a tilt cylinder and a trim cylinder arranged to raise and lower the outboard motor, a reserve tank, an oil route arranged to allow the tilt cylinder to communicate with the reserve tank, and a branch oil route br... | 07/05/2011 |
| 7347753 | Hydraulic actuation system for a marine propulsion device A hydraulic system for a sterndrive marine propulsion device directs the flow of hydraulic fluid through the body and peripheral components of a gimbal ring in order to reduce the number and length of flexible hydraulic conduits necessary to conduct pressurized hydr... | 03/25/2008 |
| 7311570 | Automatic system for adjusting the trim of a motor boat The present invention is a system for automatically controlling the trim of a boat drive thrust on a boat by controlling the trim motor which adjusts the trim angle of the boat drive thrust by pivoting the boat drive thrust relative to the boat. The system includes ... | 12/25/2007 |
| 7156709 | Method for controlling the tilt position of a marine propulsion device The calibration procedure allows an upward maximum limit of tilt to be automatically determined and stored as an operator rotates a marine propulsion device relative to a marine vessel with a particular indication present. That indication can be a grounded circuit p... | 01/02/2007 |
| 7063581 | Outboard motor operating system An outboard motor operating system, includes a shared switch for inputting operation instructions to either a steering (hydraulic) cylinder for steering an outboard motor or a PTT unit for regulating the tilt/trim angles of the outboard motor. The system also includ... | 06/20/2006 |
| 6910927 | Small watercraft and outboard motor A small watercraft and outboard motor are configured so that operator-activated command signals are communicated from a control unit in the hull of the watercraft via a local area network to engine component actuators in the outboard motor. The local area network en... | 06/28/2005 |
| 6837762 | Marine gas cylinder apparatus In a marine gas cylinder apparatus provided with a switching valve apparatus capable of switching a communication state among a piston rod side oil chamber, a piston side oil chamber and a gas chamber, a relief passage communicating a communication chamber of the sw... | 01/04/2005 |
| 6767262 | Marine gas cylinder apparatus In a marine gas cylinder apparatus provided with a switching valve apparatus capable of switching a communication state among a piston rod side oil chamber, a piston side oil chamber and a gas chamber, an open timing of a poppet valve provided in a communication pas... | 07/27/2004 |
| 6748911 | Valve timing control for marine engine An engine for a marine drive has a combustion chamber. An engine body of the engine defines an air intake port communicating with the combustion chamber. An air induction system communicates with the air intake port to introduce air to the combustion chamber through... | 06/15/2004 |
| 6682376 | Tilt device for outboard engine 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... | 01/27/2004 |
| 6048234 | Hydraulic tilt and trim unit for marine drive An improved flow control mechanism for a tilt and trim adjustment systern quickens tilt operation of an associated outboard drive, without sacrificing a desired control when trimming the outboard drive. The flow control mechanism includes a bypass line th... | 04/11/2000 |
| 5876259 | Tilt cylinder apparatus for boat propeller unit A tilt cylinder apparatus for a boat propeller unit comprising a cylinder unit containing an inside cylinder and an outside cylinder, an opening portion of the cylinders being closed by rod guides, a piston which is connected to an end of a piston rod pla... | 03/02/1999 |
| 5647780 | Vertically adjustable stern drive for watercraft A marine stern drive includes a tilt/trim and lift adjustment mechanism which raises and lowers the drive while maintaining an established trim angle. The adjustment mechanism includes a parallelogram linkage system. An upper lever of the linkage system i... | 07/15/1997 |
| 5444979 | Fluid passage control device for fluid pressure actuator A tilt cylinder for tilting an outboard engine has first and second cylinder chambers. A pair of on/off valves is movably disposed in respective fluid passages connected to a hydraulic pump and the first and second cylinder chambers, respectively. The on/... | 08/29/1995 |
| 5389016 | Steering system for planing watercrafts An arrangement in a steering and propulsion system for a planing type motorboat. The boat is provided with means for adjusting the trim position. The steering characteristics of the boat are improved by providing the steering mechanism with a sensor for d... | 02/14/1995 |
| 5366393 | Automatic trim controller for marine propulsion unit Several embodiments of automatic trim controls for marine outboard drives for maintaining the optimum trim angle under all running conditions. The velocity of the watercraft is determined and the outboard drive is trimmed up as long as the velocity contin... | 11/22/1994 |
| 5167546 | Automatic trim system A marine propulsion device comprising a propulsion unit adapted to be mounted to a boat for pivotal movement about a generally horizontal tilt axis, and for pivotal movement about a generally vertical steering axis, the propulsion unit including a propell... | 12/01/1992 |
| 4955831 | Ignition timing control system for outboard engine An arrangement for insuring that an internal combustion engine of an outboard motor will operate efficiently under all trim adjusted conditions of the outboard motor. If it is sensed that a change in trim angle will adversely effect the running, for examp... | 09/11/1990 |
| 4931025 | Posture control device for marine vessels A number of embodiments of watercraft propulsion unit controls for optimizing watercraft performance and maintaining stability. Performance is optimized in the illustrated embodiments by adjusting the trim angle of the propulsion device and stability is m... | 06/05/1990 |
| 4872857 | Operation optimizing system for a marine drive unit A system for optimizing the operation of a marine drive of the type whose position may be varied with respect to the boat by the operation of separate lift and trim/tilt means includes an automatic control system which stores preselected drive unit positi... | 10/10/1989 |
| 4824407 | Trimming device for marine propulsion apparatus A trimming device for a marine propulsion apparatus wherein the operator may effect manual trim-up or trim-down adjustment to predetermined positions. In addition, a device is incorporated for automatically trimming down the outboard drive when the speed ... | 04/25/1989 |
| 4786263 | Marine propulsion device power tilt and trim mechanism An assembly for mounting a marine propulsion unit on the transom of a boat, the assembly comprising a transom bracket adapted to be fixedly mounted on the transom, the transom bracket having mounted thereon a tilt pin and including bores permitting select... | 11/22/1988 |
| 4778414 | Trim angle control device for marine propulsion motors Several embodiments of semi-automatic trim controls for marine outboard drives wherein the operator may achieve trim up or trim down operation at his choice. In accordance with the various embodiments, an arrangement is provided for discontinuing operatio... | 10/18/1988 |
| 4776818 | Automatic trim control system for multiple drive boats An electrical control system is disclosed for trimming a pair of stern motors or drives mounted side-by-side on a boat. The two drives are both jointly and independently movable through a plurality of trim positions. The system includes two trim cylinders... | 10/11/1988 |
| 4605375 | Trim and tilt control for marine propulsion devices The electrical control for a hydraulically-actuated trim and tilt system of a marine propulsion device includes a trim-tilt switch movable between "off", "up" and "down" positions, a motion-actuated position switch movable from a "trim" position to a "til... | 08/12/1986 |
| 4551104 | Tilt lock mechanism for marine propulsion device A tilt locking and shock absorbing arrangement for a marine outboard drive embodying a single cylinder and piston assembly for controlling the tilt and trim positions of the drive and for further absorbing shocks applied to it. An arrangement is provided ... | 11/05/1985 |
| 4449945 | Outboard motor mounting arrangement Disclosed herein is a marine propulsion installation comprising a marine propulsion device including a transom bracket having a mounting portion fixed to the rear of a boat transom below the upper edge thereof, and a pair of laterally spaced arms extendin... | 05/22/1984 |
| 4325700 | Position-retentive valve seat for hydraulic cylinder A hydraulic cylinder having a piston position memory element is disclosed, and is particularly adapted for use with propulsion units for watercraft. A valve seat (76,242) is frictionally retained in a bore of a cylinder (24,200) and cooperates with a valv... | 04/20/1982 |
| 4318699 | Trim control A sensor (43) responds to the operation of a marine transportation system to sense on-plane and off-plane conditions of a boat (21) to operate a trim control (44) to automatically position a trimmable drive (25) for a desired boating operation. The prefer... | 03/09/1982 |
| 3999502 | Hydraulic power trim and power tilt system supply A hydraulic system for a combined power trim and shock absorbing piston-cylinder unit of an outboard motor includes a reversible pump having a trim-up port connected by a pressure responsive pilot valve piston cylinder units and a trim-down port through a... | 12/28/1976 |
