Abstract: A rupture in a portion of the cargo hold area of a liquid-bulk carrier cargo ship is closed by inserting a flexible, liquid-tight bag through a hatch into the hold, then pumping fluid contained in the hold back into the bag to deploy the bag. The pumping is continued until the bag has deployed far enough to cover the rupture. Such covering prevents further leakage of the cargo out of the hold. The preferred form of the invention includes the use of the ship's pumping system; however, alternative forms of the invention include self-contained units. The preferred form of the bag includes Spectra material.
Abstract: Rows of closely spaced apertures are installed in a sail to control boundary layer air flow over a sail to laminar flow type by "bleeding" high energy air from the windward or concave side of the sail through the apertures to the convex or leeward side of the sail. The "bleed air" vents the windward boundary layer air through the apertures, gently lifts the leeward or convex side boundary layer off the sail surface; then new laminar boundary layers are formed, on each side of the sail, downwind of the aperture. The increase in air energy adjacent to the sail surface maintains desirable air flow velocity and pressure gradients on the sail that prevents flow separation. The apertures permit large camber of sail contour and high angles of attack without stalling. The air "bleeding" action continuously removes old boundary layer air and creates new laminar boundary air layers on the sail.
Abstract: A submarine is provided with a large number of individual fins, some of which are arranged to create a "slot" effect between them. The fins are controlled in a way which is dependent on which of them may be in service at a particular time so that manoeuvreability is substantially unaffected by damage to a limited number of them.
February 28, 1991
Date of Patent:
June 16, 1992
Frederick A. Johnson, Malcolm A. Swinbanks, Christopher F. King
Abstract: A combination catamaran boat and cross water ski system includes left and right hulls, a bridging deck, and a steering system. Each hull includes a rudder in its keel portion and a rudder plate on its top, connected by a rudder shaft for pivotal movement. A footpiece on each rudder plate is for a skier's feet. The steering system includes a tiller above the deck connected to a tiller lever system below the deck, and a rudder crossbar connecting the tiller lever system to the rudder plates on the hulls. The left and right hulls are separable from the deck and steering system, and convertible to use as right and left cross water skis respectively. Ski poles each include a handle with an upper portion and laterally offset lower portion, and a pontoon.
Abstract: A crane vehicle has a movable vehicle body and a pair of outriggers expandable outwardly from opposite sides of the vehicle body in widthwise opposite directions and bearing against the ground to support load weight applied to the vehicle body in stationary state. A column is mounted vertically on the vehicle body and rotatable around its vertical axis. A hydraulic motor effects rotating movement of the column at variable rotation speed in clockwise and counterclockwise directions. A telescopic boom has a free top portion and a bottom portion mounted pivotably at a top portion of the column such that the telescopic boom is angularly movable along a vertical plane containing the vertical axis of the column. The telescopic boom is linearly movable along its axis. A first hydraulic cylinder effects angular movement of the telescopic boom at variable angular speed in upward and downward directions.
Abstract: The personal motorcraft trailer has a lower shell which is capable of flotation and planing on a body of water. An upper shell has a lip which fits over the edge of the lower shell forming a sealed pod in which gear and supplies may be stored. At least a portion of the upper shell is openably attached by a hinge. The upper shell has two recessed areas in its upper surface, the rear recessed area being deep enough for holding fuel containers and the forward recessed area being relatively shallow and concave to accept gear such as surfboards or skis which are held in place by elastic cords stretched across the gear from hooks on the sides of the upper shell. The trailer is towed behind the motorcraft by a tongue the prongs of which attach at two clips, one on either side of the lower shell. Each prong of the tongue catches under the lip at the front of the trailer to prevent the trailer from digging into the water, causing it to flip.
Abstract: A device for stretching and folding a strut type jib for a crane, including a jib supporting mechanism for supporting the jib along one side surface of a boom under a vertically disposed condition of the jib where a forward end portion of the jib is directed to a forward end portion of the boom, and opposite flat planes of the jib are oriented horizontally in such a manner that the jib is slidable along the side surface of the boom in a range between a folded position of the jib where a base end portion of the jib is disposed aside a base end portion of the boom and an advance position of the jib where the base end portion of the jib is disposed aside the forward end portion of the boom; a pair of jib supporting shafts projecting outwardly from opposite side surfaces of the forward end portion of the boom; a pair of connecting portions provided at the base end portion of the jib and adapted to be connected to the jib supporting shafts upon stretching of the jib; and an engaging member provided at a lower end
Abstract: A swivel for use in a crane has a stationary upper member which is secured to the boom and a lower member which is rotatable relative to the upper member and is connected with the end of the cable. The cable is looped beneath the swivel and the bight of its loop carries a roll which supports the load. A driving unit is provided to positively rotate the lower member of the swivel when the cable portions flanking the roll beneath the swivel tend to cross each other. The driving unit is of the self-locking type or the lower member of the swivel can be braked to prevent a change in its angular position independently of the driving unit. If such independent change of angular position of the lower member is desired, the machine employs a load-responsive clutch which disengages the lower member from the driving unit in the absence of load upon the roll.
Abstract: A shaft shielding top loader (20) for use in the inlet water channel (12) of a water craft (10) is disclosed. Shaft shielding top loader (20) is configured to divide the incoming water into an upper portion and a lower portion, where the upper portion supplies the top of impeller (13). This is accomplished using an arcuate top loading plate (21) supported by a shaft shielding partition (22). Shaft shielding partition (22) is configured to have a trailing straight edge which is colinearly juxtapositioned with respect to impeller drive shaft (14) to shield impeller drive shaft (14) from the force of the incoming water. Shaft shielding top loader (20) is attached entirely within inlet water channel (12) using a suitable attachment device, such as a screw, at grate connecting adapter plate (24) and shoe plate (26). Shaft shielding top loader (20) insures a continuous water supply to impeller (13) regardless of the craft's orientation to the flow of incoming water.
Abstract: A small jet propelled watercraft having a partially open rider's area covered at least in part by a roof. The construction and orientation of the roof is such to insure that the watercraft cannot be inverted in the water.
Abstract: A reverse boat oar is provided and consists of a mechanism for holding a large gear portion on a distal end of an oar handle arm and a small gear portion formed on a distal end of an oar paddle arm in a meshing rotatable relationship. An oar lock attaches the holding mechanism to a gunwale of a boat, so that when a rower pushes forward on the oar handle arm the oar paddle arm will also go forward. The rower can sit facing the bow of the boat to see where the boat is going.
Abstract: A method of leveling a cabinet comprising the steps of lifting the cabinet off of the ground, inserting safety blocks underneath the raised cabinet, adjusting one or more of the adjustable feet which depend from the cabinet corners, lowering the cabinet to the ground, checking the level of the cabinet and repeating the above steps until the cabinet is level.
Abstract: A servo controlled trolling motor steering system provides improved speed and steering control. The system includes apparatus for mounting the motor on a boat for rotation about an axis to effect steering of the boat. A foot pedal includes a base and a foot pad pivotally mounted to the base, the foot pad being pivotal by a user to command a desired steering direction. A membrane potentiometer senses rotational position of the motor to develop an electrical signal representative of the rotational position, the signal comprising a steering feedback signal. A second membrane potentiometer senses pivotal position of the foot pad relative to the base to develop an electrical signal representative of the pivotal position, the signal comprising a steering command signal.
Abstract: A motor boat with auxiliary and main motors and having a transom with a pocket or recess constructed and arranged to receive and support an auxiliary outboard motor. The auxiliary motor is connected to a steering control in a helm control center which steers both the auxiliary and main motors. Preferably operating controls enable starting, tilting and steering of both motors and associated propulsion assemblies from the helm. Preferably, the operating controls include a cable carried in a sheathing attached to a steering wheel mounted in the helm control center and adapted to turn or move the rudder of the main motor and the auxiliary motor propulsion assembly to thereby steer the boat.
Abstract: A cargo ship is provided with transverse bulkheads to separate holds from each other. In addition, the bulkheads are arranged in pairs to define compartments therebetween in which flights of steps are arranged. Access openings are also provided in the transversely extending bulkheads to provide access to the steps at various levels. Each flight of steps is contained between two partitions which form a passage within the compartment. A hatch cover is provided at the top to gain access to the passage.
Abstract: Disclosed herein is a marine propulsion device comprising a transom bracket adapted to be mounted on a boat transom and including a rearwardly and laterally open socket, a swivel bracket connected to the transom bracket for pivotal movement about a horizontal tilt axis, a trail arm pivotally mounted on the swivel bracket for movement between a retracted position adjacent the swivel bracket and an extended position projecting from the swivel bracket and including an outer end receivable in the socket in the transom bracket and having a laterally extending projection, a latch member pivotally mounted on the transom bracket for movement between a retracted position and a latching position, which latch member includes a hook located, when the latch member is in the latching position, for engagement with the projection to prevent withdrawal of the outer end of the trail arm from the socket, and which hook is located, when the latch member is in the retracted position, clear of interferring engagement with travel o
May 14, 1990
Date of Patent:
April 7, 1992
Outboard Marine Corporation
Gregory L. Binversie, H. Norman Petersen, James E. Macier, John M. Daniels
Abstract: A tanker is divided into multiple cargo tanks for carrying liquid cargo such as oil. Each tank has a top wall, a bottom wall and side walls. Each tank is provided with a generally horizontal wall that divides the tank into upper and lower zones. The upper zone is located between the horizontal wall and the top wall, while the lower zone is located between the horizontal wall and the bottom wall. The horizontal wall is located near the water line of the tanker and is oil tight so as to eliminate the head pressure of the oil in the tank in the event the lower zone is ruptured.
Abstract: Several embodiments of water cooled outboard motors embodying an exhaust system that includes at least one expansion chamber contained within the drive shaft housing and that is provided with a coolant jacket. A catalyst is positioned in the exhaust system within the expansion chamber for treating the exhaust gases delivered from the engine to the expansion chamber. The coolant from the cooling jacket is delivered back to the body of water in which the watercraft is operating without flowing into the expansion chamber so as to protect the catalyst from water damage. In some embodiments, plural expansion chambers are incorporaed. In these other embodiments, the expansion chambers are arranged so as to preclude the likelihood of water impinging on the catalyst if it enters through an underwater exhaust gas discharge opening and also the arrangement is such that water will not contact the catalyst when the outboard motor is tilted up to an out of the water condition.
Abstract: A battery arrangement in a smaller watercraft is provided wherein the battery is positioned in a compartment located immediately under the seat which is detachably affixed to the hull of the watercraft for affording easy access to the battery for servicing, particularly by a rider of the watercraft. The compartment is preferably watertight and has a top cover which may be detached to obtain direct access to the battery, after the seat is detached.
Abstract: A trim position sensor and indicator and control unit for a marine outboard drive each of which is provided with its own power supply. The trim position indicator may also control the control circuit to control a watercraft running condition in the event a trim angle change dictates such an adjustment.