Abstract:
An outdoor unit for an air conditioner is disclosed. The outdoor unit according to the present invention comprises a housing which has an air inlet and an air outlet, a ventilation fan rotatably mounted in the housing, and a fan guard connected to the housing to cover the air outlet. Here, the fan guard comprises a plurality of closed ribs arranged sequentially and concentrically between a center and an outline thereof, and a plurality of radial ribs arranged in radial directions to interconnect the plurality of closed ribs, in such a manner that some of the closed ribs, which are disposed at intermediate positions near tips of the ventilation fan, are at a further distance from the ventilation fan than the other closed ribs, which are disposed near the center and the outline. Accordingly, since the fan guard is convexly raised at a position corresponding to the tips of the ventilation fan, thereby guaranteeing a predetermined space between the fan guard and the tips where the airflow is fastest, the flow resistance and the flow-induced noise can be reduced.
Abstract:
A vessel transfer system utilizes a larger, surface effect vessel with a hull and a cargo deck, having a pressurized volume of air under its hull. The larger vessel cargo deck is lowered relative to a water surface in order to receive a smaller vessel. Lowering is achieved by depressurizing the volume of pressurized air under the hull. Movable propulsors on an air cushion vehicle permit efficient operation under way in an outer position, while minimizing the envelope dimensions for stowage in a well deck, providing clearance from bridges, docks, etc. in an inner position. In the outer position, the propellers operate in more uniform inflow conditions, resulting in improved performance and lower noise levels. In addition, the craft can be arranged to use a full width stern ramp resulting in time saved during cargo loading/unloading. The propellers will be less likely to ingest green water in high sea states.
Abstract:
A backpack with backpack frame and adjustable shoulder harness removably fitting a person, the backpack further comprising an internal combustion engine with a pulley system connecting the engine to a propeller axle with propeller, a propeller surround with air intake and air outlet whereby the propeller propels a person upon a given surface. Handles comprise controls for throttle, kill switch, and lights. Handles are a part of the backpack frame or of ski poles. A pendulum emergency stop device kills the engine if the person falls.
Abstract:
An airboat and drive system for operating a pair of counter rotating air propellers that propel an airboat are described. An engine is mounted low in the hull of an airboat to lower the center of gravity and provide a more stable airboat. The drive system is connected to the engine through a drive shaft. The drive system includes a transmission, interconnecting frame, and counter rotating air propeller drive. The interconnecting frame mounts the counter rotating air propeller drive above the transmission providing proper clearance for the air propellers with the hull of the airboat. The transmission and counter rotating air propeller drive are connected through an interconnecting drive shaft. The amount of noise from a conventional belt drive is reduced. The modular design and simplified drive system is easier to assemble and align.
Abstract:
An air boat having a monocoque design is described. The deck and hull are rigidly reinforced with a plurality of formed channels that run parallel along the deck. Side ribs that are disposed perpendicular to the channels provide stiffness in the intersecting plane of the hull. Water-flow channels defined by elongated ribs run along the bottom of the hull and compress water and provide lift to the boat, reducing sideways slippage and spray of the craft during maneuvers and turns. The steering mechanism includes dual fins and a no-feedback gearbox that resists self-straightening when the pilot releases the steering wheel. The turning radius of the boat is especially short. A safety cage is foldable and encloses a motor, the motor mount of which uses the boat hull as its base structural element.
Abstract:
An outboard drive system that includes a drive assembly and a drive system control assembly. The drive assembly includes a base assembly; a fan propulsion assembly including a internal combustion drive motor, a propeller, and a coupling shaft; a safety cage; a dual rudder assembly; a kill switch wire in electrical connection with the drive motor; a throttle positioning cable assembly; and a rudder positioning cable assembly; the drive system control assembly including a housing structure; a mounting plate; a rudder positioning cable control stick; a manual kill switch button; and a spring loaded throttle cable control trigger.
Abstract:
An aquatic vehicle for transporting passengers at high speeds over water, the vehicle having an elongated body with an enclosed cabin for accommodating passengers, wheels for sustaining the body above water, axles projecting from the body to the wheels, inflated tires with oval cross-sections, partitions extending in the tires radially outward from the axles so as to form hermetically sealed and watertight chambers to maintain floatability even after a portion of the tires becomes damaged, and a turbine for propelling the body on the surface of the water. The wheels are freely rotatable and free of any transmission means from the turbine.
Abstract:
A vehicle is provided to be propelled by a rearward discharge of fluid therefrom and including fluid jet developing structure for discharging a rearward jet of fluid along a predetermined path for propelling the vehicle forwardly. A pair of upstanding steering vanes are mounted for rotation about upstanding axes spaced transversely apart and disposed on opposite sides of the center line of the aforementioned path. Control structure is also provided and operative to simultaneously similarly angularly displace the vanes about their axes of oscillation and the control structure further includes adjustment structure for selectively relatively angularly displacing the vanes about their axes of oscillation. The vanes extend rearwardly of their axes of oscillation distances greater than one-half the distance between the axes of oscillation of the vanes, whereby opposite relative angular displacement of the vanes to forwardly and outwardly inclined positions displaced generally 50.degree. to 60.degree. from front-to-rear extending positions will cause the rear ends of the vanes to swing into close juxtaposed positions.
Abstract:
An improved utility class hydrofoil boat having an integrated hydrofoil suspension and steering system wherein pairs of foils may be inclined at various angles, to the lateral axis of the boat, converting from surface piercing to submerged type foils when operated in concert and, in combination with the production of a yawing force about the vertical axis, may be used to produce coordinated turns by introducing a differential in the angle of inclination between starboard and port foils or by introducing a differential in the sweepback angle between starboard and port foils. In the preferred embodiment, a symmetrical, submerged tail foil having a positive dihedral is rotated to produce a yawing moment in proportion to the bank produced by manipulation of the pairs of foils, resulting in coordinated, banked turns with a single control movement. The foils incorporate a swivelable, shearable connection allowing them to streamline and convert to skis if the lower portion of the foils should strike a submerged object. This boat also combines modular construction, ducted fan propulsion, synchronous belt drive, sealed components, convertability to a self-trailering configuration, use of lightweight, non-corrosive materials, and simple controls to provide simple, safe, stable, energy-efficient, low-cost, quiet, high speed water transportation, capable of operation in varied water surface conditions.